The Swell HDPE Pond Liner 40-Year Guarantee With Free Underlay is our best-selling pond liner. These pond liners are made from a flexible 0.35mm-thick HDPE (high density polyethylene) material that, while not quite as thick as rubber pond liners, is similarly durable. It's also UV resistant and, when paired with the standard protective underlay provided, forms a great base for a quality pond. These garden pond liners are available in a range of sizes to suit your needs. Swell UK garden pond liners are easy to fit. Their HDPE make-up makes them flexible pond liners that are well suited to a wildlife pond or sculpted garden ponds like Koi ponds. They also create a great seal, keeping pond water where it should be - in your pond! Heavy duty liners are incredibly durable and built to stand the test of time. In fact, we're so confident in the durablity of these fish pond liners, and the HDPE they're made of, that we've given them a 40-year guarantee. This 40-year guarantee covers your pond liner against damage from sunlight. It doesn't, however, cover damage from punctures so it's highly recommended that you lay down your free layer of standard protective underlay prior to installing your pond liner.
