When it comes to creating a pond in your garden, it is important that you don’t forget the vital stage - pond liner and underlay. A robust, tear-resistant liner paired with a heavy-duty underlay creates an impenetrable barrier, that prevents leaks, protects against sharp stones, and ensures your water feature lasts for decades. Explore our hand-picked selection below, or calculate your exact requirements using our handy Pond Liner Calculator. Plus, you can browse our range of pre-formed ponds, pre-formed waterfalls, water blades and spillways to complete your pond setup.

Building a leak-free water feature starts from the ground up, and choosing a reliable fish pond liner is the most important decision you will make. 

Types of Pond Liners

  • Flexible Pond Liners: Choose from high-quality PVC or EPDM that mould effortlessly to your pond's unique shape and contours.
  • Protective Pond Liner Underlay: An essential, rot-proof geotextile fleece that sits between the soil and your liner, absorbing ground movement and stopping sharp roots from causing punctures.
  • Pre-Formed Ponds: Rigid, highly durable plastic and fibreglass pools that take the guesswork out of digging, offering ready-made shelves for marginal plants.

Frequently Asked Questions

What’s the best pond liner material for beginners? 

For beginners building a typical garden pond, PVC is highly cost-effective and easy to handle as a liner for small pond setups. However, for ultimate longevity and ease of fitting without creases, EPDM rubber liners are considered the best choice due to their incredible stretch and tear resistance.

What are good-quality pond liner options? 

We highly recommend EPDM, particularly from industry leader Gordon Low. These materials offer unmatched UV resistance, extreme flexibility, and are completely safe for all aquatic life, making them the best overall fish pond liner options.

Making a garden pond - preformed rigid liner or pond liner? 

Flexible pond liners offer complete creative freedom over the size, shape, and depth of your pond. Pre-formed rigid liners, on the other hand, are fantastic for quicker, standardised installations since the structural shape and planting terraces are already built-in.

Do I need to use both pond underlay and pond liner?

Absolutely. You must install a specialised pond liner underlay between the bare earth and the liner. This protective fleece cushions the liner against sharp stones, expanding roots, and shifting soil, which is vital for preventing leaks.

Next Steps & Helpful Guides

Pond & Aquarium Guides