The most durable material for a pond liner in a natural swimming pond is reinforced polyethylene (RPE). It’s a strong, lightweight option that offers excellent puncture resistance, making it ideal for areas with rocky or uneven soil. RPE is also resistant to UV rays and extreme temperatures, ensuring it holds up well over time, even in challenging outdoor conditions.
This material typically lasts 20 years or more with proper care and is a great choice for eco-friendly pond construction. While EPDM rubber is also durable, RPE stands out for its lower environmental impact, requiring less material and energy to produce, all while being tough enough to keep the pond’s ecosystem stable.
