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200gsm Black Flexible Pond Liner with Underlay, 5m x 5m

200gsm Black Flexible Pond Liner with Underlay, 5m x 5m

Regular price £26.39
Regular price Sale price £26.39
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89 in stock

  • Build your garden pond: a 5m × 5m nominal sheet of flexible 200gsm PE for the water-holding layer.
  • Follows your pond's contours: flexible polyethylene fits around curves, shelves and changes in depth without a rigid preformed shape.
  • Black face with grey reverse: UV-resistant PE for outdoor ponds and garden water features.
  • Underlay included: 2 separate 3m × 5m sheets of 50gsm fabric for laying beneath the liner.
  • One liner supplied: cut-size tolerance ±5%. Allow for depth and edging; prepare smooth ground and remove sharp debris before fitting.
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Description

Two layers for your pond

Start with a 5m × 5m black polyethylene liner and separate fabric underlay in one bundle. The flexible PE sheet forms the water-holding layer; the lightweight fabric belongs beneath it on prepared ground.

One 200gsm liner with 50gsm fabric underlay. Edging and installation accessories are separate.

Illustrative installation of black PE pond liner with grey reverse over separate black fabric underlay
Illustrative preparation. Pond construction and other accessories are not included.
5m × 5mNominal square liner
25m²Flat liner area
200gsmPolyethylene liner
50gsmIncluded fabric underlay

Plan the square around your pond

Equal sheet dimensions give you 5m to work with in each direction before allowances. The finished pond will be smaller: material is needed down the sides, across shelves and around the edge finish.

Measure both routes through the actual excavation, following its contours. Include the edging allowance and the ±5% cut-size tolerance. The nominal 25m² flat area is useful for describing the sheet, but cannot confirm whether an irregular layout fits.

5m5m25m²nominal flat liner areaCut size ±5% · not the finished pond size

A prepared base makes the difference

Clear the ground

Remove sharp stones, roots and debris from the base, sides and shelves. Smooth the contact surface before placing the fabric.

Position the fabric

Arrange the lightweight underlay beneath the liner. Check its coverage and choose any extra protection needed for your ground conditions.

Leave room to settle

Unfold the PE liner without stretching it tight across corners or gaps. Keep the planned allowance around the perimeter and check before filling.

What arrives in this bundle?

One nominal 5m × 5m black and grey 200gsm polyethylene pond liner, supplied with 50gsm fabric underlay. The PE liner is UV-resistant for outdoor pond use. The underlay is a distinct lightweight fabric layer; its GSM is separate from the liner's material weight.

Pond edging, plants, stones and installation accessories are not included. This is a PE bundle, rather than an EPDM rubber liner.

Before fitting

Will the water surface be 25m²?

No. That is the nominal area of the liner laid flat. Sides, depth, shelves and edging take up some of the material. Measure the full routes through the pond before ordering.

Does the included fabric prevent every puncture?

No. Remove sharp objects and prepare the ground carefully. The 50gsm fabric is a lightweight layer, so assess any further protection your particular ground conditions require.

Product information & technical details

SKUPLB5X5-001+
Product typePond Liner with Underlay
Size5m x 5m
Length5m
Width5m
GSM200gsm
ColourBlack, Grey
MaterialPolyethylene (PE)
Nominal flat liner area25m²
Included underlay2 × 3m × 5m sheets of 50gsm fabric; separate pieces, allow for overlaps.
Cut-size tolerance±5%

Black polyethylene pond liner with a grey reverse, supplied with lightweight fabric underlay. The liner is for pond use and should be installed over underlay on prepared ground.

5m × 5m is the nominal liner cut size, with a ±5% tolerance. Allow for pond depth, contours and edging before choosing a sheet.

All delivery times are estimates and not guaranteed. Orders placed before 1 pm, Monday to Friday (excluding bank holidays), will be dispatched the same day, while orders placed after 1 pm will be dispatched by the end of the next working day.

If an invalid postcode or address is provided, the order will be cancelled without further notice, as we are unable to modify addresses or print labels for invalid postcodes.

Our standard delivery option is Royal Mail Tracked 48, which typically takes 3–5 business days. If you need your order more quickly, Expedited delivery via Royal Mail Tracked 24 is available, offering a 1–2 business day service.

Large or bulky items may be sent via courier at our discretion and are usually dispatched for next-day delivery. Please note that we only ship to mainland UK addresses; delivery to non-mainland locations, including the Highlands & Islands, may not be available for large or heavy items. If your address falls into one of these areas and you wish to purchase such items, please contact us with your postcode and order details before placing your order. If we cannot ship to you, you are welcome to arrange your own courier for collection.

Please see our shipping policy for further information.

All products, unless otherwise stated, come with a standard manufacturer warranty against faulty workmanship.

If your product fails within six months of delivery, please contact us with your order reference number, a description of the issue, and clear images illustrating the fault.

Should your item require a return for further investigation, it is your responsibility to arrange and cover postage back to us.

If we are unable to repair the fault, we may offer either a replacement or a full refund.

In cases where the item is inspected and found not to be faulty, or where damage is determined not to be due to manufacturing defects, you will not be entitled to a refund or replacement. We will then either return the item to you via standard post or dispose of it at your request.

Please see our warranty policy for further information.

You may return any order within 14 days of delivery. As soon as you receive your items, please inspect them carefully, taking reasonable care to keep both the product and its packaging clean and undamaged. If you discover an error or defect after 14 days, we reserve the right to decline your return. If your product fails or breaks after this 14-day time window then your order may be eligible for a warranty claim, please see our warranty information for more details.

To initiate a return, please contact us via our contact form to obtain a return authorisation and the correct returns address (different from the address on your invoice). This can also be done through your 'recent orders' page on your account if you are registered with Shop. Returns sent without prior authorisation will be discarded.

Returned items must be in the same condition in which you received them: unworn or unused, with tags attached and in their original packaging. You must include either a copy of your invoice or a slip with your order reference number inside the parcel. Please be sure not to obscure your return reference number on the label.

If you refuse delivery or reject the parcel without prior notice, we will inspect the returned package and issue a refund upon receipt. Although there is no restocking fee, we will deduct the cost of the return postage label (£3.35) from your refund.

If the returned item or its packaging shows signs of use, damage, or staining, we may deduct up to 50% of the order value, or refuse the return entirely, depending on its condition. Examples include damaged tags, stained, modified or damaged packaging, or missing components.

For faulty, incorrect, or damaged items, please contact us before sending anything back so we can attempt to resolve the issue directly. If we agree that a return is necessary due to our error, we will provide you with a pre-paid return label.

Products that have been modified or damaged through customer action are not eligible for return. This includes, but is not limited to, items that have been cut, trimmed or otherwise altered (such as a tarpaulin or pond liner resized to your specifications), or any product showing damage beyond normal inspection handling.

Please see our refund policy for further information.

All delivery times are estimates and not guaranteed. Orders placed before 1 pm, Monday to Friday (excluding bank holidays), will be dispatched the same day, while orders placed after 1 pm will be dispatched by the end of the next working day.

If an invalid postcode or address is provided, the order will be cancelled without further notice, as we are unable to modify addresses or print labels for invalid postcodes.

Our standard delivery option is Royal Mail Tracked 48, which typically takes 3–5 business days. If you need your order more quickly, Expedited delivery via Royal Mail Tracked 24 is available, offering a 1–2 business day service.

Large or bulky items may be sent via courier at our discretion and are usually dispatched for next-day delivery. Please note that we only ship to mainland UK addresses; delivery to non-mainland locations, including the Highlands & Islands, may not be available for large or heavy items. If your address falls into one of these areas and you wish to purchase such items, please contact us with your postcode and order details before placing your order. If we cannot ship to you, you are welcome to arrange your own courier for collection.

Please see our shipping policy for further information.

All products, unless otherwise stated, come with a standard manufacturer warranty against faulty workmanship.

If your product fails within six months of delivery, please contact us with your order reference number, a description of the issue, and clear images illustrating the fault.

Should your item require a return for further investigation, it is your responsibility to arrange and cover postage back to us.

If we are unable to repair the fault, we may offer either a replacement or a full refund.

In cases where the item is inspected and found not to be faulty, or where damage is determined not to be due to manufacturing defects, you will not be entitled to a refund or replacement. We will then either return the item to you via standard post or dispose of it at your request.

Please see our warranty policy for further information.

You may return any order within 14 days of delivery. As soon as you receive your items, please inspect them carefully, taking reasonable care to keep both the product and its packaging clean and undamaged. If you discover an error or defect after 14 days, we reserve the right to decline your return. If your product fails or breaks after this 14-day time window then your order may be eligible for a warranty claim, please see our warranty information for more details.

To initiate a return, please contact us via our contact form to obtain a return authorisation and the correct returns address (different from the address on your invoice). This can also be done through your 'recent orders' page on your account if you are registered with Shop. Returns sent without prior authorisation will be discarded.

Returned items must be in the same condition in which you received them: unworn or unused, with tags attached and in their original packaging. You must include either a copy of your invoice or a slip with your order reference number inside the parcel. Please be sure not to obscure your return reference number on the label.

If you refuse delivery or reject the parcel without prior notice, we will inspect the returned package and issue a refund upon receipt. Although there is no restocking fee, we will deduct the cost of the return postage label (£3.35) from your refund.

If the returned item or its packaging shows signs of use, damage, or staining, we may deduct up to 50% of the order value, or refuse the return entirely, depending on its condition. Examples include damaged tags, stained, modified or damaged packaging, or missing components.

For faulty, incorrect, or damaged items, please contact us before sending anything back so we can attempt to resolve the issue directly. If we agree that a return is necessary due to our error, we will provide you with a pre-paid return label.

Products that have been modified or damaged through customer action are not eligible for return. This includes, but is not limited to, items that have been cut, trimmed or otherwise altered (such as a tarpaulin or pond liner resized to your specifications), or any product showing damage beyond normal inspection handling.

Please see our refund policy for further information.