Description
Shape a garden pond your way
Bring a pond into your garden with a flexible 3m × 4m black EPDM rubber sheet. Follow your chosen contours and plan space for planting shelves and edging.
- 3m × 4m sheet
- 1100gsm EPDM rubber
- 0.9mm thickness
One liner supplied. Underlay and installation accessories sold separately.
Rubber that works with your pond's contours
EPDM is a flexible synthetic rubber. It can follow rounded edges, slopes and planting shelves, giving you more freedom over the shape of your pond.
- Made for outdoor pond use. UV and ozone resistant for outdoor pond use.
- A clear material specification. 1100gsm material weight and a thickness of 900 microns (0.9mm).
- Joined-sheet construction. This liner is made from securely joined sheets and contains seams. It is not a seamless cut.
A rectangular sheet for your pond plan.
The 3m × 4m flat sheet provides 12m² of liner before allowing for the sides and edges. Work from the deepest part of your design rather than the water surface alone. The flat sheet area is not the finished pond footprint.
Allow for the deepest part of your pond and an overlap around every edge. Use the sizing calculator below before choosing your liner.
For irregular ponds, shelves or waterfalls, measure along the actual contours as well. Use the calculator below to find your liner size.
What size pond liner do I need?
Enter your pond dimensions in metres to find the liner size you need.
Cross-section, not to scale. Width uses the same calculation.
Prepare the pond. Protect the liner.
A careful start gives the rubber a smooth, supported surface to follow.
Clear and prepare
Remove sharp stones, roots and debris. Shape the pond and shelves, then use suitable protective underlay between the ground and liner.
Unfold gently
After cold transport, leave the liner at room temperature, around 20°C, for a few hours. Separate the folded layers slowly from a corner or edge.
Plan the handling
Check access to the pond and keep the sheet supported as you position it. Do not pull sharply or use knives to separate layers.
What arrives with your order?
One 3m × 4m black EPDM pond liner. Protective underlay, adhesives, seam tape, tools and decorative edging are not included. See the selected accessories above for compatible preparation materials and check their coverage before ordering.
Before you start
Is 3m × 4m the size of the finished pond?
No. It is the flat sheet size. Allow for pond depth, shelves and an overlap at every edge. Use the calculator above as a starting estimate and check the actual contours of your design.
Is protective underlay included?
No. Underlay is sold separately. It helps separate the liner from sharp objects and ground irregularities; it does not replace careful ground preparation.
Does this liner contain seams?
Yes. The supplied liner is made from securely joined sheets. Joined-sheet construction is part of this product's specification.
Why might the folded layers stick together?
Folded layers can stick together after storage under pressure. Allow the liner to reach room temperature and separate them slowly and evenly. Do not use sharp tools or force the layers apart.
What is the white or matt residue on the rubber?
Manufacturing processing aids can leave a white or matt residue where folded layers touched. This does not affect watertightness, strength or durability. Wipe it away with a soft, damp cloth. Contact us if the liner arrives with tears, punctures, holes or cracks.
Product information & technical details
| SKU | EPDM900-3X4-001 |
|---|---|
| Product type | |
| Size | 3m x 4m |
| Length | 4m |
| Width | 3m |
| GSM | 1100gsm |
| Colour | Black |
| Material | EPDM Rubber |
|---|---|
| Thickness | 900 microns / 0.9mm |
| Construction | Securely joined sheets; contains seams |
| Supplied | One liner |
| Not supplied | Underlay, seam tape, adhesives and installation accessories |
| Flat sheet area | 12m² |
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.
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.
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.
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.
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.
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.