Pond Underlay & Pond Lining

Getting the size right makes all the difference: always choose underlay that matches the dimensions of your pond liner, and allow a little extra to cover the marginal shelves and edges where stones and roots are most likely to cause damage. For larger or irregularly shaped ponds, overlapping strips of underlay is far more effective than stretching a single piece too thin. It's a small outlay compared to the cost of a punctured liner, and taking the time to line the hole properly before you fill it with water means far less risk of leaks, subsidence or costly repairs down the line. Pair it with one of our pond liners for a complete, protected base your pond can thrive on for years.