{"title":"450gsm Black PVC Pond Liners","description":"\u003cp\u003eFlexible black PVC, 450gsm and 0.3mm thick, for garden ponds and water features: more than twice the material weight of our 200gsm PE liners, and safe for fish.\u003c\/p\u003e\u003cp\u003eFourteen sheet sizes from 1m x 1m to 8m x 8m, each sold on its own or with 50gsm underlay to match, and a calculator to find your size.\u003c\/p\u003e","products":[{"product_id":"black-pvc-pond-liner-450gsm","title":"Black PVC Pond Liner, 450gsm - Flexible Liner for Garden Ponds and Water Features, 14 Sizes from 1m x 1m to 8m x 8m","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e14 sizes\u003c\/strong\u003e\u003cspan\u003e1m x 1m to 8m x 8m\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eUnderlay\u003c\/strong\u003e\u003cspan\u003eAn option on every size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSize tolerance\u003c\/th\u003e\n\u003ctd\u003eCut sizes, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhat each size builds\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eLiner sheet\u003c\/th\u003e\n\u003cth scope=\"col\"\u003ePond it builds\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eGood for\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eUnderlay included\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e1m x 1m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e0.4m x 0.4m, 15cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eSmall patio water feature or container pond\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eOne 1m x 1m sheet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e2.5m x 2.5m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e1m x 1m, 45cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eSmall wildlife pond\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eOne 3m x 3m sheet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e2.5m x 3m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e1m x 1.5m, 45cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eSmall wildlife or patio pond\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eOne 3m x 5m sheet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e3m x 3m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e1.5m x 1.5m, 45cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eSmall garden pond with a planting shelf\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eOne 3m x 3m sheet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e3m x 4m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e1.5m x 2.5m, 45cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eSmall garden pond with a planting shelf\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eOne 3m x 5m sheet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e2.5m x 5m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e1m x 3.5m, 45cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eLong, narrow pond\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eOne 3m x 5m sheet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e4m x 4m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e2.2m x 2.2m, 60cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eMedium garden pond with shelves\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eTwo 3m x 5m sheets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e4m x 5m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e2.2m x 3.2m, 60cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eMedium garden pond with shelves\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eTwo 3m x 5m sheets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e4m x 6m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e2.2m x 4.2m, 60cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eMedium pond or small fish pond\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eTwo 3m x 5m sheets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e2.5m x 10m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e1m x 8.5m, 45cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eCanal pond or long stream\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eOne 3m x 10m sheet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e5m x 5m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e3.2m x 3.2m, 60cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eLarger garden pond\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eTwo 3m x 5m sheets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e5m x 6m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e3.2m x 4.2m, 60cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eLarger pond with marginal shelves\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eTwo 3m x 5m sheets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e6m x 6m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e4.2m x 4.2m, 60cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eLarge garden or fish pond\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eFour 3m x 3m sheets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e8m x 8m\u003c\/th\u003e\n\u003ctd data-label=\"Pond it builds\"\u003e5.6m x 5.6m, 90cm deep\u003c\/td\u003e\n\u003ctd data-label=\"Good for\"\u003eLarge, deep fish pond\u003c\/td\u003e\n\u003ctd data-label=\"Underlay included\"\u003eThree 3m x 10m sheets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eApproximate ponds, keeping 30cm of liner spare at every edge (15cm on the 1m x 1m). Deeper ponds come out smaller: every extra 10cm of depth takes 20cm off the length and width.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade to line a garden pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-wildlife.jpg\" alt=\"Small wildlife pond with a gravel beach\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eWildlife pond\u003c\/strong\u003eShallow edges and planting shelves for frogs, newts and insects.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-fish.jpg\" alt=\"Goldfish in a stone-edged garden pond\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eFish pond\u003c\/strong\u003eThe larger sheets give a deep middle for pond fish.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-stream.jpg\" alt=\"Small stream and waterfall feature\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eStreams and features\u003c\/strong\u003eLong sheets for rills and canals, small ones for patio features.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one black PVC pond liner in the size you choose and the 50gsm fabric underlay to suit it. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs the sheet size the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. Each size is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. Choose a size that covers the whole pond, or see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"1m x 1m \/ With underlay","offer_id":63278541242755,"sku":"PL-PVC-BLACK-1X1-001+","price":7.79,"currency_code":"GBP","in_stock":true},{"title":"1m x 1m \/ Liner only (I have underlay)","offer_id":63278541275523,"sku":"PL-PVC-BLACK-1X1-001","price":6.89,"currency_code":"GBP","in_stock":true},{"title":"2.5m x 2.5m \/ With underlay","offer_id":63278541308291,"sku":"PL-PVC-BLACK-2.5X2.5-001+","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"2.5m x 2.5m \/ Liner only (I have underlay)","offer_id":63278541341059,"sku":"PL-PVC-BLACK-2.5X2.5-001","price":18.39,"currency_code":"GBP","in_stock":true},{"title":"2.5m x 3m \/ With underlay","offer_id":63278541373827,"sku":"PL-PVC-BLACK-2.5X3-001+","price":23.49,"currency_code":"GBP","in_stock":true},{"title":"2.5m x 3m \/ Liner only (I have underlay)","offer_id":63278541406595,"sku":"PL-PVC-BLACK-2.5X3-001","price":20.89,"currency_code":"GBP","in_stock":true},{"title":"3m x 3m \/ With underlay","offer_id":63278541439363,"sku":"PL-PVC-BLACK-3X3-001+","price":25.19,"currency_code":"GBP","in_stock":true},{"title":"3m x 3m \/ Liner only (I have underlay)","offer_id":63278541472131,"sku":"PL-PVC-BLACK-3X3-001","price":23.89,"currency_code":"GBP","in_stock":true},{"title":"3m x 4m \/ With underlay","offer_id":63278541504899,"sku":"PL-PVC-BLACK-3X4-001+","price":31.99,"currency_code":"GBP","in_stock":true},{"title":"3m x 4m \/ Liner only (I have underlay)","offer_id":63278541537667,"sku":"PL-PVC-BLACK-3X4-001","price":29.89,"currency_code":"GBP","in_stock":true},{"title":"2.5m x 5m \/ With underlay","offer_id":63278541570435,"sku":"PL-PVC-BLACK-2.5X5-001+","price":32.99,"currency_code":"GBP","in_stock":true},{"title":"2.5m x 5m \/ Liner only (I have underlay)","offer_id":63278541603203,"sku":"PL-PVC-BLACK-2.5X5-001","price":30.89,"currency_code":"GBP","in_stock":true},{"title":"4m x 4m \/ With underlay","offer_id":63278541635971,"sku":"PL-PVC-BLACK-4X4-001+","price":42.89,"currency_code":"GBP","in_stock":true},{"title":"4m x 4m \/ Liner only (I have underlay)","offer_id":63278541668739,"sku":"PL-PVC-BLACK-4X4-001","price":37.89,"currency_code":"GBP","in_stock":true},{"title":"4m x 5m \/ With underlay","offer_id":63278541701507,"sku":"PL-PVC-BLACK-4X5-001+","price":50.49,"currency_code":"GBP","in_stock":true},{"title":"4m x 5m \/ Liner only (I have underlay)","offer_id":63278541734275,"sku":"PL-PVC-BLACK-4X5-001","price":45.89,"currency_code":"GBP","in_stock":true},{"title":"4m x 6m \/ With underlay","offer_id":63278541767043,"sku":"PL-PVC-BLACK-4X6-001+","price":58.09,"currency_code":"GBP","in_stock":true},{"title":"4m x 6m \/ Liner only (I have underlay)","offer_id":63278541799811,"sku":"PL-PVC-BLACK-4X6-001","price":53.89,"currency_code":"GBP","in_stock":true},{"title":"2.5m x 10m \/ With underlay","offer_id":63278541832579,"sku":"PL-PVC-BLACK-2.5X10-001+","price":59.39,"currency_code":"GBP","in_stock":true},{"title":"2.5m x 10m \/ Liner only (I have underlay)","offer_id":63278541865347,"sku":"PL-PVC-BLACK-2.5X10-001","price":55.79,"currency_code":"GBP","in_stock":true},{"title":"5m x 5m \/ With underlay","offer_id":63278541898115,"sku":"PL-PVC-BLACK-5X5-001+","price":59.99,"currency_code":"GBP","in_stock":true},{"title":"5m x 5m \/ Liner only (I have underlay)","offer_id":63278541930883,"sku":"PL-PVC-BLACK-5X5-001","price":55.79,"currency_code":"GBP","in_stock":true},{"title":"5m x 6m \/ With underlay","offer_id":63278541963651,"sku":"PL-PVC-BLACK-5X6-001+","price":69.49,"currency_code":"GBP","in_stock":true},{"title":"5m x 6m \/ Liner only (I have underlay)","offer_id":63278541996419,"sku":"PL-PVC-BLACK-5X6-001","price":65.79,"currency_code":"GBP","in_stock":true},{"title":"6m x 6m \/ With underlay","offer_id":63278542029187,"sku":"PL-PVC-BLACK-6X6-001+","price":86.89,"currency_code":"GBP","in_stock":true},{"title":"6m x 6m \/ Liner only (I have underlay)","offer_id":63278542061955,"sku":"PL-PVC-BLACK-6X6-001","price":77.79,"currency_code":"GBP","in_stock":true},{"title":"8m x 8m \/ With underlay","offer_id":63278542094723,"sku":"PL-PVC-BLACK-8X8-001+","price":153.69,"currency_code":"GBP","in_stock":false},{"title":"8m x 8m \/ Liner only (I have underlay)","offer_id":63278542127491,"sku":"PL-PVC-BLACK-8X8-001","price":142.19,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-gallery-01-folded-even.jpg?v=1794481390"},{"product_id":"1m-x-1m-black-pvc-pond-liner-450gsm","title":"1m x 1m Black PVC Pond Liner, 450gsm - Flexible Liner for Small Water Features, Container Ponds and Spare Patch Sheets","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tough little liner for small water features\u003c\/h3\u003e\n\u003cp\u003eFlexible 1m x 1m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE for a patio water feature or container pond, or to keep as a waterproof spare.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero-1x1.jpg\" alt=\"Small stone trough pond on a patio\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e1m x 1m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e1m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 1m x 1m sheet weighs about 0.5kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e1m x 1m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e1m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 0.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 1m x 1m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 0.4m x 0.4m and 15cm deep, with 15cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a small patio water feature or container pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. If your pond is at this sheet's limit, choose the next size up, 2.5m x 2.5m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes one 1m x 1m sheet of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a small patio water feature or container pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-1x1-patio-feature.jpg\" alt=\"Small pebble pool water feature in a patio corner\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003ePatio water feature\u003c\/strong\u003eA small bubbling feature or pebble pool, up to about 40cm across.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-1x1-container-pond.jpg\" alt=\"Wooden planter box lined as a mini pond\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eContainer pond\u003c\/strong\u003eLine a small trough, sink or pot, up to about 40cm across, for a few aquatic plants.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-1x1-spare-sheet-owner.jpg\" alt=\"Black PVC sheet on a workbench with a square cut from it\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eSpare and patch sheet\u003c\/strong\u003eA tough, waterproof sheet to keep for patches and small jobs where a thin tarp would not last. Patching needs a PVC adhesive, which we do not sell.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom container to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-1x1-step-1.jpg\" alt=\"Wooden planter box lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eLine with underlay\u003c\/strong\u003e\u003cspan\u003ePress underlay into the trough, planter or hole first, folding it into the corners, so nothing rough can rub the liner.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-1x1-step-2.jpg\" alt=\"Black PVC liner eased into the underlay-lined planter box\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eLay the sheet over the underlay, fold the spare neatly into each corner and leave some over the rim.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-1x1-step-3.jpg\" alt=\"Watering can filling the lined planter box\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then tuck the edge\u003c\/strong\u003e\u003cspan\u003eFill slowly, then trim the spare and tuck the edge just under the rim or beneath pebbles.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 1m x 1m black PVC pond liner and one 1m x 1m sheet of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 1m x 1m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 1m x 1m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. Choose a size that covers the whole pond, or see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278542946691,"sku":"PL-PVC-BLACK-1X1-001+","price":7.79,"currency_code":"GBP","in_stock":true},{"title":"Liner only (I have underlay)","offer_id":63278542979459,"sku":"PL-PVC-BLACK-1X1-001","price":6.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-1m-x-1m.jpg?v=1794481390"},{"product_id":"2-5m-x-10m-black-pvc-pond-liner-450gsm","title":"2.5m x 10m Black PVC Pond Liner, 450gsm - Flexible Liner for Canal Ponds and Long Streams","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible 2.5m x 10m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e2.5m x 10m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e25m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 2.5m x 10m sheet weighs about 11.3kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e2.5m x 10m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e25m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 11.3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 2.5m x 10m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 1m x 8.5m and 45cm deep, with 30cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a canal pond or long stream.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. This is our largest PVC sheet; for a bigger pond see our EPDM liners, up to 10m x 10m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes one 3m x 10m sheet of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a canal pond or long stream\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-long-pond.jpg\" alt=\"Long, narrow pond running beside a garden path\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eLong, narrow pond\u003c\/strong\u003eA canal-style pond along a path, wall or border.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-stream.jpg\" alt=\"Small stream and waterfall feature\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eStream or rill\u003c\/strong\u003eLine a shallow channel that runs water between two points.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-formal-canal.jpg\" alt=\"Straight formal canal pond with stone coping\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eFormal canal\u003c\/strong\u003eA straight, narrow pool for a formal garden.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 2.5m x 10m black PVC pond liner and one 3m x 10m sheet of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 2.5m x 10m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 2.5m x 10m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. This is our largest PVC sheet: for a bigger pond see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278543372675,"sku":"PL-PVC-BLACK-2.5X10-001+","price":59.39,"currency_code":"GBP","in_stock":true},{"title":"Liner only (I have underlay)","offer_id":63278543405443,"sku":"PL-PVC-BLACK-2.5X10-001","price":55.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-2-5m-x-10m.jpg?v=1794481390"},{"product_id":"2-5m-x-2-5m-black-pvc-pond-liner-450gsm","title":"2.5m x 2.5m Black PVC Pond Liner, 450gsm - Flexible Liner for Small Wildlife Ponds","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible 2.5m x 2.5m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e2.5m x 2.5m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e6.25m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 2.5m x 2.5m sheet weighs about 2.8kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e2.5m x 2.5m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e6.25m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 2.8kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 2.5m x 2.5m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 1m x 1m and 45cm deep, with 30cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a small wildlife pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. If your pond is at this sheet's limit, choose the next size up, 2.5m x 3m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes one 3m x 3m sheet of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a small wildlife pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-wildlife.jpg\" alt=\"Small wildlife pond with a gravel beach\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eWildlife pond\u003c\/strong\u003eA small, shallow-edged pond for frogs, newts and insects.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-feature.jpg\" alt=\"Formal feature pond beside a patio\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003ePatio pond\u003c\/strong\u003eA compact pond that fits beside a patio or path.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-shelves.jpg\" alt=\"Planting baskets on submerged pond shelves\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003ePlanting shelf\u003c\/strong\u003eRoom for one shelf of marginal plants around the edge.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 2.5m x 2.5m black PVC pond liner and one 3m x 3m sheet of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 2.5m x 2.5m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 2.5m x 2.5m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. Choose a size that covers the whole pond, or see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278543700355,"sku":"PL-PVC-BLACK-2.5X2.5-001+","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"Liner only (I have underlay)","offer_id":63278543733123,"sku":"PL-PVC-BLACK-2.5X2.5-001","price":18.39,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-2-5m-x-2-5m.jpg?v=1794481390"},{"product_id":"2-5m-x-3m-black-pvc-pond-liner-450gsm","title":"2.5m x 3m Black PVC Pond Liner, 450gsm - Flexible Liner for Small Wildlife and Patio Ponds","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible 2.5m x 3m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e2.5m x 3m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e7.5m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 2.5m x 3m sheet weighs about 3.4kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e2.5m x 3m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e7.5m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 3.4kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 2.5m x 3m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 1m x 1.5m and 45cm deep, with 30cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a small wildlife or patio pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. If your pond is at this sheet's limit, choose the next size up, 3m x 3m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes one 3m x 5m sheet of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a small wildlife or patio pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-wildlife.jpg\" alt=\"Small wildlife pond with a gravel beach\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eWildlife pond\u003c\/strong\u003eA small, shallow-edged pond for frogs, newts and insects.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-feature.jpg\" alt=\"Formal feature pond beside a patio\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003ePatio pond\u003c\/strong\u003eA compact pond that fits beside a patio or path.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-shelves.jpg\" alt=\"Planting baskets on submerged pond shelves\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003ePlanting shelf\u003c\/strong\u003eRoom for one shelf of marginal plants around the edge.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 2.5m x 3m black PVC pond liner and one 3m x 5m sheet of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 2.5m x 3m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 2.5m x 3m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. Choose a size that covers the whole pond, or see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278543962499,"sku":"PL-PVC-BLACK-2.5X3-001+","price":23.49,"currency_code":"GBP","in_stock":true},{"title":"Liner only (I have underlay)","offer_id":63278543995267,"sku":"PL-PVC-BLACK-2.5X3-001","price":20.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-2-5m-x-3m.jpg?v=1794481391"},{"product_id":"2-5m-x-5m-black-pvc-pond-liner-450gsm","title":"2.5m x 5m Black PVC Pond Liner, 450gsm - Flexible Liner for Long, Narrow Ponds and Rills","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible 2.5m x 5m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e2.5m x 5m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e12.5m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 2.5m x 5m sheet weighs about 5.6kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e2.5m x 5m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e12.5m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 5.6kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 2.5m x 5m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 1m x 3.5m and 45cm deep, with 30cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a long, narrow pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. If your pond is at this sheet's limit, choose the next size up, 4m x 5m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes one 3m x 5m sheet of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a long, narrow pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-long-pond.jpg\" alt=\"Long, narrow pond running beside a garden path\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eLong, narrow pond\u003c\/strong\u003eA canal-style pond along a path, wall or border.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-stream.jpg\" alt=\"Small stream and waterfall feature\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eStream or rill\u003c\/strong\u003eLine a shallow channel that runs water between two points.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-formal-canal.jpg\" alt=\"Straight formal canal pond with stone coping\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eFormal canal\u003c\/strong\u003eA straight, narrow pool for a formal garden.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 2.5m x 5m black PVC pond liner and one 3m x 5m sheet of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 2.5m x 5m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 2.5m x 5m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. Choose a size that covers the whole pond, or see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278544126339,"sku":"PL-PVC-BLACK-2.5X5-001+","price":32.99,"currency_code":"GBP","in_stock":true},{"title":"Liner only (I have underlay)","offer_id":63278544159107,"sku":"PL-PVC-BLACK-2.5X5-001","price":30.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-2-5m-x-5m.jpg?v=1794481390"},{"product_id":"3m-x-3m-black-pvc-pond-liner-450gsm","title":"3m x 3m Black PVC Pond Liner, 450gsm - Flexible Liner for Small Garden Ponds with a Planting Shelf","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible 3m x 3m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e3m x 3m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e9m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 3m x 3m sheet weighs about 4kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e3m x 3m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e9m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 4kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 3m x 3m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 1.5m x 1.5m and 45cm deep, with 30cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a small garden pond with a planting shelf.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. If your pond is at this sheet's limit, choose the next size up, 3m x 4m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes one 3m x 3m sheet of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a small garden pond with a planting shelf\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-wildlife.jpg\" alt=\"Small wildlife pond with a gravel beach\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eWildlife pond\u003c\/strong\u003eA small, shallow-edged pond for frogs, newts and insects.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-feature.jpg\" alt=\"Formal feature pond beside a patio\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003ePatio pond\u003c\/strong\u003eA compact pond that fits beside a patio or path.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-shelves.jpg\" alt=\"Planting baskets on submerged pond shelves\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003ePlanting shelf\u003c\/strong\u003eRoom for one shelf of marginal plants around the edge.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 3m x 3m black PVC pond liner and one 3m x 3m sheet of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 3m x 3m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 3m x 3m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. Choose a size that covers the whole pond, or see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278544486787,"sku":"PL-PVC-BLACK-3X3-001+","price":25.19,"currency_code":"GBP","in_stock":true},{"title":"Liner only (I have underlay)","offer_id":63278544519555,"sku":"PL-PVC-BLACK-3X3-001","price":23.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-3m-x-3m.jpg?v=1794481390"},{"product_id":"3m-x-4m-black-pvc-pond-liner-450gsm","title":"3m x 4m Black PVC Pond Liner, 450gsm - Flexible Liner for Small Garden and Wildlife Ponds with Shelves","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible 3m x 4m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e3m x 4m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e12m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 3m x 4m sheet weighs about 5.4kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e3m x 4m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e12m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 5.4kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 3m x 4m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 1.5m x 2.5m and 45cm deep, with 30cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a small garden pond with a planting shelf.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. If your pond is at this sheet's limit, choose the next size up, 4m x 4m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes one 3m x 5m sheet of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a small garden pond with a planting shelf\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-wildlife.jpg\" alt=\"Small wildlife pond with a gravel beach\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eWildlife pond\u003c\/strong\u003eA small, shallow-edged pond for frogs, newts and insects.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-feature.jpg\" alt=\"Formal feature pond beside a patio\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003ePatio pond\u003c\/strong\u003eA compact pond that fits beside a patio or path.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-shelves.jpg\" alt=\"Planting baskets on submerged pond shelves\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003ePlanting shelf\u003c\/strong\u003eRoom for one shelf of marginal plants around the edge.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 3m x 4m black PVC pond liner and one 3m x 5m sheet of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 3m x 4m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 3m x 4m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. Choose a size that covers the whole pond, or see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278544847235,"sku":"PL-PVC-BLACK-3X4-001+","price":31.99,"currency_code":"GBP","in_stock":true},{"title":"Liner only (I have underlay)","offer_id":63278544880003,"sku":"PL-PVC-BLACK-3X4-001","price":29.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-3m-x-4m.jpg?v=1794481390"},{"product_id":"4m-x-4m-black-pvc-pond-liner-450gsm","title":"4m x 4m Black PVC Pond Liner, 450gsm - Flexible Liner for Medium Garden Ponds with Shelves","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible 4m x 4m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e4m x 4m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e16m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 4m x 4m sheet weighs about 7.2kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e4m x 4m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e16m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 7.2kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 4m x 4m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 2.2m x 2.2m and 60cm deep, with 30cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a medium garden pond with shelves.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. If your pond is at this sheet's limit, choose the next size up, 4m x 5m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes two 3m x 5m sheets of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a medium garden pond with shelves\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-shelves.jpg\" alt=\"Planting baskets on submerged pond shelves\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eGarden pond with shelves\u003c\/strong\u003eRoom for planting shelves and a deeper middle.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-fish.jpg\" alt=\"Goldfish in a stone-edged garden pond\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eSmall fish pond\u003c\/strong\u003eEnough depth in the middle for a few pond fish.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-wildlife.jpg\" alt=\"Small wildlife pond with a gravel beach\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eWildlife pond\u003c\/strong\u003eGently sloping sides for wildlife to come and go.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 4m x 4m black PVC pond liner and two 3m x 5m sheets of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 4m x 4m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 4m x 4m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. Choose a size that covers the whole pond, or see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278545043843,"sku":"PL-PVC-BLACK-4X4-001+","price":42.89,"currency_code":"GBP","in_stock":true},{"title":"Liner only (I have underlay)","offer_id":63278545076611,"sku":"PL-PVC-BLACK-4X4-001","price":37.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-4m-x-4m.jpg?v=1794481390"},{"product_id":"4m-x-5m-black-pvc-pond-liner-450gsm","title":"4m x 5m Black PVC Pond Liner, 450gsm - Flexible Liner for Medium Garden and Wildlife Ponds","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible 4m x 5m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e4m x 5m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e20m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 4m x 5m sheet weighs about 9kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e4m x 5m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e20m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 9kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 4m x 5m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 2.2m x 3.2m and 60cm deep, with 30cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a medium garden pond with shelves.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. If your pond is at this sheet's limit, choose the next size up, 4m x 6m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes two 3m x 5m sheets of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a medium garden pond with shelves\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-shelves.jpg\" alt=\"Planting baskets on submerged pond shelves\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eGarden pond with shelves\u003c\/strong\u003eRoom for planting shelves and a deeper middle.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-fish.jpg\" alt=\"Goldfish in a stone-edged garden pond\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eSmall fish pond\u003c\/strong\u003eEnough depth in the middle for a few pond fish.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-wildlife.jpg\" alt=\"Small wildlife pond with a gravel beach\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eWildlife pond\u003c\/strong\u003eGently sloping sides for wildlife to come and go.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 4m x 5m black PVC pond liner and two 3m x 5m sheets of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 4m x 5m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 4m x 5m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. Choose a size that covers the whole pond, or see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278545305987,"sku":"PL-PVC-BLACK-4X5-001+","price":50.49,"currency_code":"GBP","in_stock":true},{"title":"Liner only (I have underlay)","offer_id":63278545338755,"sku":"PL-PVC-BLACK-4X5-001","price":45.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-4m-x-5m.jpg?v=1794481390"},{"product_id":"4m-x-6m-black-pvc-pond-liner-450gsm","title":"4m x 6m Black PVC Pond Liner, 450gsm - Flexible Liner for Medium Garden and Small Fish Ponds","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible 4m x 6m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e4m x 6m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e24m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 4m x 6m sheet weighs about 10.8kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e4m x 6m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e24m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 10.8kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 4m x 6m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 2.2m x 4.2m and 60cm deep, with 30cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a medium pond or small fish pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. If your pond is at this sheet's limit, choose the next size up, 5m x 6m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes two 3m x 5m sheets of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a medium pond or small fish pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-shelves.jpg\" alt=\"Planting baskets on submerged pond shelves\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eGarden pond with shelves\u003c\/strong\u003eRoom for planting shelves and a deeper middle.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-fish.jpg\" alt=\"Goldfish in a stone-edged garden pond\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eSmall fish pond\u003c\/strong\u003eEnough depth in the middle for a few pond fish.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-wildlife.jpg\" alt=\"Small wildlife pond with a gravel beach\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eWildlife pond\u003c\/strong\u003eGently sloping sides for wildlife to come and go.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 4m x 6m black PVC pond liner and two 3m x 5m sheets of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 4m x 6m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 4m x 6m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. Choose a size that covers the whole pond, or see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278545437059,"sku":"PL-PVC-BLACK-4X6-001+","price":58.09,"currency_code":"GBP","in_stock":true},{"title":"Liner only (I have underlay)","offer_id":63278545469827,"sku":"PL-PVC-BLACK-4X6-001","price":53.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-4m-x-6m.jpg?v=1794481390"},{"product_id":"5m-x-5m-black-pvc-pond-liner-450gsm","title":"5m x 5m Black PVC Pond Liner, 450gsm - Flexible Liner for Larger Garden Ponds","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible 5m x 5m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e5m x 5m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e25m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 5m x 5m sheet weighs about 11.3kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e5m x 5m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e25m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 11.3kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 5m x 5m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 3.2m x 3.2m and 60cm deep, with 30cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a larger garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. If your pond is at this sheet's limit, choose the next size up, 5m x 6m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes two 3m x 5m sheets of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a larger garden pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-shelves.jpg\" alt=\"Planting baskets on submerged pond shelves\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eGarden pond with shelves\u003c\/strong\u003eRoom for planting shelves and a deeper middle.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-fish.jpg\" alt=\"Goldfish in a stone-edged garden pond\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eSmall fish pond\u003c\/strong\u003eEnough depth in the middle for a few pond fish.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-wildlife.jpg\" alt=\"Small wildlife pond with a gravel beach\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eWildlife pond\u003c\/strong\u003eGently sloping sides for wildlife to come and go.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 5m x 5m black PVC pond liner and two 3m x 5m sheets of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 5m x 5m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 5m x 5m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. Choose a size that covers the whole pond, or see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278545633667,"sku":"PL-PVC-BLACK-5X5-001+","price":59.99,"currency_code":"GBP","in_stock":true},{"title":"Liner only (I have underlay)","offer_id":63278545666435,"sku":"PL-PVC-BLACK-5X5-001","price":55.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-5m-x-5m.jpg?v=1794481390"},{"product_id":"5m-x-6m-black-pvc-pond-liner-450gsm","title":"5m x 6m Black PVC Pond Liner, 450gsm - Flexible Liner for Larger Ponds with Marginal Shelves","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible 5m x 6m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e5m x 6m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e30m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 5m x 6m sheet weighs about 13.5kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e5m x 6m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e30m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 13.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 5m x 6m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 3.2m x 4.2m and 60cm deep, with 30cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a larger pond with marginal shelves.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. If your pond is at this sheet's limit, choose the next size up, 6m x 6m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes two 3m x 5m sheets of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a larger pond with marginal shelves\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-shelves.jpg\" alt=\"Planting baskets on submerged pond shelves\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eGarden pond with shelves\u003c\/strong\u003eRoom for planting shelves and a deeper middle.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-fish.jpg\" alt=\"Goldfish in a stone-edged garden pond\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eSmall fish pond\u003c\/strong\u003eEnough depth in the middle for a few pond fish.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-wildlife.jpg\" alt=\"Small wildlife pond with a gravel beach\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eWildlife pond\u003c\/strong\u003eGently sloping sides for wildlife to come and go.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 5m x 6m black PVC pond liner and two 3m x 5m sheets of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 5m x 6m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 5m x 6m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. Choose a size that covers the whole pond, or see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278545928579,"sku":"PL-PVC-BLACK-5X6-001+","price":69.49,"currency_code":"GBP","in_stock":true},{"title":"Liner only (I have underlay)","offer_id":63278545961347,"sku":"PL-PVC-BLACK-5X6-001","price":65.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-5m-x-6m.jpg?v=1794481390"},{"product_id":"6m-x-6m-black-pvc-pond-liner-450gsm","title":"6m x 6m Black PVC Pond Liner, 450gsm - Flexible Liner for Large Garden and Fish Ponds","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible 6m x 6m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e6m x 6m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e36m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 6m x 6m sheet weighs about 16.2kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e6m x 6m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e36m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 16.2kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 6m x 6m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 4.2m x 4.2m and 60cm deep, with 30cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a large garden or fish pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. If your pond is at this sheet's limit, choose the next size up, 8m x 8m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes four 3m x 3m sheets of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a large garden or fish pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-large-fish.jpg\" alt=\"Larger koi pond in a big garden\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eLarge fish pond\u003c\/strong\u003eA deep middle for fish, with shelves for planting.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-feature.jpg\" alt=\"Formal feature pond beside a patio\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eFeature pond\u003c\/strong\u003eA centrepiece pond that suits a waterfall or fountain.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-wildlife.jpg\" alt=\"Small wildlife pond with a gravel beach\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eWildlife pond\u003c\/strong\u003eWide margins and shallow shelves for wildlife.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 6m x 6m black PVC pond liner and four 3m x 3m sheets of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 6m x 6m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 6m x 6m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. Choose a size that covers the whole pond, or see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278546026883,"sku":"PL-PVC-BLACK-6X6-001+","price":86.89,"currency_code":"GBP","in_stock":true},{"title":"Liner only (I have underlay)","offer_id":63278546059651,"sku":"PL-PVC-BLACK-6X6-001","price":77.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-6m-x-6m.jpg?v=1794481390"},{"product_id":"8m-x-8m-black-pvc-pond-liner-450gsm","title":"8m x 8m Black PVC Pond Liner, 450gsm - Flexible Liner for Large, Deep Fish Ponds","description":"\u003cdiv class=\"eot-aplus eot-aplus--v2\"\u003e\n\u003cdiv class=\"eot-aplus__lead\"\u003e\n\u003csection class=\"eot-aplus__hero\"\u003e\u003cdiv class=\"eot-aplus__hero-copy\"\u003e\n\u003ch3\u003eA tougher liner for the pond you dig\u003c\/h3\u003e\n\u003cp\u003eFlexible 8m x 8m black PVC at 450gsm: a thicker, tougher sheet than 200gsm PE that still folds into the curves and shelves of a garden pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-hero.jpg\" alt=\"Finished garden pond with planting on the shelf\" width=\"1600\" height=\"900\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\n\u003cdiv class=\"eot-aplus__facts\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e8m x 8m\u003c\/strong\u003e\u003cspan\u003eSheet size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e64m²\u003c\/strong\u003e\u003cspan\u003eSheet area\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e450gsm\u003c\/strong\u003e\u003cspan\u003eMaterial weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePVC\u003c\/strong\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003e450gsm PVC: tougher than PE, easier than rubber\u003c\/h3\u003e\n\u003cp\u003eThis liner is a flexible sheet of black PVC. 450gsm means each square metre weighs 450 grams, more than twice our 200gsm PE liner, so the sheet is thicker and stands up better to tears and punctures. It is still far lighter than 1100gsm EPDM rubber: a 8m x 8m sheet weighs about 28.8kg, so it is easy to carry to the pond and unfold.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature eot-aplus__feature--reverse\"\u003e\n\u003cfigure\u003e\u003cimg style=\"aspect-ratio:1\/1\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-flex.jpg\" alt=\"Black PVC liner folding over the edge of a planting shelf\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003ctable class=\"eot-aplus__table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePVC, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial weight\u003c\/th\u003e\n\u003ctd\u003e450g per m² (450gsm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e0.3mm (300 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet size\u003c\/th\u003e\n\u003ctd\u003e8m x 8m, cut size, can vary by up to 3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSheet area\u003c\/th\u003e\n\u003ctd\u003e64m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLiner weight\u003c\/th\u003e\n\u003ctd\u003eAbout 28.8kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSafe for fish\u003c\/th\u003e\n\u003ctd\u003eYes, and for other pond life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUV resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSupplied\u003c\/th\u003e\n\u003ctd\u003eFolded and bagged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- eot:liner-compare --\u003e\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eWhich pond liner is right for you?\u003c\/h3\u003e\u003c\/div\u003e\n\u003ctable class=\"eot-aplus__table eot-aplus__table--stack\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/200gsm-black-pond-liners\"\u003e200gsm PE\u003c\/a\u003e\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e450gsm PVC (this liner)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e\u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003e1100gsm EPDM\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003ePolyethylene, black and grey\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003ePVC, black\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eEPDM synthetic rubber, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight per m²\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e200g\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e450g\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e1100g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSizes\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003e17, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003e14, from 1m x 1m to 8m x 8m\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003e11, from 1m x 1m to 10m x 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eUnderlay\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eSold separately or as a kit\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eAn option on every size\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eSold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eChoose it for\u003c\/th\u003e\n\u003ctd data-label=\"200gsm PE\"\u003eThe lowest cost per square metre\u003c\/td\u003e\n\u003ctd data-label=\"450gsm PVC\"\u003eA tougher sheet at a mid price\u003c\/td\u003e\n\u003ctd data-label=\"1100gsm EPDM\"\u003eStretching over deep shelves and tight curves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"eot-aplus__table-note\"\u003eWant a natural stony look? The same 450gsm PVC also comes with a \u003ca href=\"\/collections\/450gsm-pebble-pvc-pond-liners\"\u003eprinted pebble face\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\u003c!-- \/eot:liner-compare --\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\n\u003ch3\u003eWhat a 8m x 8m sheet builds\u003c\/h3\u003e\n\u003cp\u003eA pond about 5.6m x 5.6m and 90cm deep, with 30cm of liner spare at every edge to tuck under stones, slabs or turf. That suits a large, deep fish pond.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__feature\"\u003e\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-diagram-cross-section.jpg\" alt=\"Cross-section of a pond showing the liner running down, across and up, with spare at each edge\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003cdiv\u003e\u003cul class=\"eot-aplus__uses\" style=\"margin-top:0\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere the sheet goes\u003c\/strong\u003e\u003cspan\u003eThe liner runs down one side, across the bottom and up the other. Each way it covers the pond, twice its depth and the spare at both edges.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeeper means smaller\u003c\/strong\u003e\u003cspan\u003eEvery extra 10cm of depth takes 20cm off the pond's length and width. This is our largest PVC sheet; for a bigger pond see our EPDM liners, up to 10m x 10m.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderlay for this size\u003c\/strong\u003e\u003cspan\u003eThe With underlay option includes three 3m x 10m sheets of 50gsm fabric underlay.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne sheet per pond\u003c\/strong\u003e\u003cspan\u003eLine the pond with a single sheet. Two sheets need joining tape or adhesive to seal the seam, which we do not sell, so choose a size that covers your pond on its own.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"eot-aplus__module eot-aplus__decision\"\u003e\u003c!-- eot:pond-sizing --\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eMade for a large, deep fish pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003cdiv class=\"eot-aplus__tiles eot-aplus__tiles--stack\" style=\"--cols:3\"\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-large-fish.jpg\" alt=\"Larger koi pond in a big garden\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eLarge fish pond\u003c\/strong\u003eA deep middle for fish, with shelves for planting.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-feature.jpg\" alt=\"Formal feature pond beside a patio\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eFeature pond\u003c\/strong\u003eA centrepiece pond that suits a waterfall or fountain.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003cfigure class=\"eot-aplus__tile\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-tile-wildlife.jpg\" alt=\"Small wildlife pond with a gravel beach\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003cfigcaption\u003e\u003cstrong\u003eWildlife pond\u003c\/strong\u003eWide margins and shallow shelves for wildlife.\u003c\/figcaption\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"eot-aplus__head\"\u003e\u003ch3\u003eFrom hole to pond\u003c\/h3\u003e\u003c\/div\u003e\n\u003col class=\"eot-aplus__photo-steps\" style=\"--cols:3\"\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-1-underlay.jpg\" alt=\"Pond hole with a shelf lined with black fabric underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eDig and line with underlay\u003c\/strong\u003e\u003cspan\u003eShape the hole with shelves, then always lay underlay first to protect the liner from stones and roots.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-2-liner.jpg\" alt=\"Black PVC liner eased into the pond hole over the underlay\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eEase in the liner\u003c\/strong\u003e\u003cspan\u003eUnfold it over the hole, leave plenty spare round the rim and let it settle into the shelves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-desc-step-3-fill.jpg\" alt=\"Hose filling the lined pond with the liner edge held by bricks\" width=\"1600\" height=\"1200\" loading=\"lazy\"\u003e\u003cstrong\u003eFill, then finish the edge\u003c\/strong\u003e\u003cspan\u003eWeight the loose edge and fill slowly. Once the liner has settled, trim it and cover the rim with stones or slabs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003csection class=\"eot-aplus__faq\"\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWhat's included?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWith underlay: one 8m x 8m black PVC pond liner and three 3m x 10m sheets of 50gsm fabric underlay. Liner only: the liner on its own, for when you already have underlay.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eDo I need underlay?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. A pond liner should always be laid on underlay, never straight on soil: it cushions the liner against stones and roots. Choose the With underlay option to get both together, or see our \u003ca href=\"\/collections\/pond-liner-underlay\"\u003epond liner underlay\u003c\/a\u003e if you already have a liner.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs 8m x 8m the finished pond size?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo. The sheet also covers the pond's depth, shelves and edging, so the finished pond is smaller. 8m x 8m is the cut size, and the finished sheet can vary by up to 3%.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eIs it safe for fish?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The liner is safe for fish and other pond life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eWill it stand up to sunlight?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes. The PVC is UV resistant and should last for many years in a garden pond. Like all plastics it ages slowly in sunlight, faster in full sun than in shade or under water, so cover the edge with stones, slabs or turf to protect it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eCan I join two liners for a bigger pond?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eWe recommend one sheet per pond. Two sheets need joining tape or adhesive to make a watertight seam, and we do not sell either. This is our largest PVC sheet: for a bigger pond see our \u003ca href=\"\/collections\/1100gsm-epdm-black-rubber-pond-liners\"\u003eEPDM liners\u003c\/a\u003e, up to 10m x 10m.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"eot-faq\"\u003e\u003csummary\u003eHow is it delivered?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFolded and bagged. Unfold it next to the pond and let it relax before you ease it into the hole.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"Costwise","offers":[{"title":"With underlay","offer_id":63278546551171,"sku":"PL-PVC-BLACK-8X8-001+","price":153.69,"currency_code":"GBP","in_stock":false},{"title":"Liner only (I have underlay)","offer_id":63278546583939,"sku":"PL-PVC-BLACK-8X8-001","price":142.19,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/files\/black-pvc-pond-liner-450gsm-thumb-8m-x-8m.jpg?v=1794481390"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/3271\/9576\/collections\/black-pvc-pond-liner-450gsm-desc-hero.jpg?v=1794496282","url":"https:\/\/eotrader.co.uk\/collections\/450gsm-black-pvc-pond-liners.oembed","provider":"Essential Online Traders","version":"1.0","type":"link"}