Find the best pond liner for your garden pond, koi pond or wildlife pond. Our pond liners for sale include high-quality rubber pond liner, HDPE pond liner and PVC pond liner to keep your fish pond watertight and leak-free. From a small pond liner to large, we have a variety of sizes with free pond underlay options. Use our Pond Liner Calculator to help you work out exactly what size you need.
Pond Liners
Find the best pond liner for your garden pond, koi pond or wildlife pond. Our pond liners for sale include high-quality rubber pond liner, HDPE pond liner and PVC pond liner to keep your fish pond watertight and leak-free. From a small pond liner to large, we have a variety of sizes with free pond underlay options. Use our Pond Liner Calculator to help you work out exactly what size you need.
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Swell HDPE Pond Liner 40-Year Guarantee With Free UnderlayIn stockFrom £14.09 Regular Price £36.75 Save £22.66 -
Swell HDPE Pond Liner 40-Year Guarantee With Heavy Duty UnderlayIn stockFrom £15.59 Regular Price £45.55 Save £29.96 -
Swell HDPE Pond Liner Lifetime Guarantee With Free UnderlayIn stockFrom £16.09 Regular Price £36.75 Save £20.66 -
Swell HDPE Pond Liner Lifetime Guarantee With Heavy Duty UnderlayIn stockFrom £17.59 Regular Price £45.55 Save £27.96 -
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Gordon Low SealEco Greenseal EPDM Rubber Pond Liner Lifetime GuaranteeIn stockFrom £126.30 Regular Price £195.86 Save £69.56 -
Gordon Low SealEco Firestone EPDM Rubber Pond Liner Lifetime GuaranteeIn stockFrom £185.03 Regular Price £252.88 Save £67.85 -
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Help and advice on shopping for: Pond Liners
What are pond liners used for?
A pond liner forms the foundation of a pond, creating a waterproof barrier to prevent leaks and stop water from seeping into the soil. A high-quality pond liner protects against damage, ensuring a long-lasting, durable pond. At Swell UK, we offer flexible, UV-resistant pond liners suited for all pond sizes and shapes. Choose from our best-selling pond liners, including rubber pond liner, HDPE pond liner, PVC pond liner, and butyl pond liner, with pre-cut options for easy installation. Whether you're building a small garden pond or a large water feature, a strong pond liner is essential for keeping it leak-free and secure.
Choosing the right thickness and underlay for your pond liner
When selecting a pond liner, the thickness isn’t the sole indicator of quality. HDPE and PVC pond liners can be thinner yet highly durable, especially when paired with a protective pond liner underlay. Underlay plays a crucial role by safeguarding the liner from punctures caused by sharp rocks or roots, ensuring your pond remains waterproof for years. If your pond is in a rocky or root-filled area, a thicker rubber pond liner can offer additional protection, providing extra durability. No matter the liner you choose, always use a pond liner underlay to maximise lifespan and keep your pond intact.
Pond liner vs. preformed pond
The only type of pond that does not need a pond liner is a preformed pond. Whilst a preformed pond comes in fixed shapes and sizes, limiting customisation, a pond liner offers greater flexibility. With a pond liner, you can design a pond that suits your specific preferences, budget, and the needs of any fish you plan to keep.
Can I use a tarp instead of a pond liner?
No, tarps, plastic sheets, or DIY materials won’t last. They aren’t UV-resistant and will degrade, leading to leaks, tears, and potential water contamination. A proper pond liner ensures years of reliable performance.
What size pond liner do I need?
Once you have an idea of the sort of material you're looking for, all you really need to do is find a pond liner of the right size to create your pond paradise. Use our Pond Liner Calculator to determine the perfect liner size based on your pond’s length, width, and depth.