10 Best Pond Liners 2025 in the United States

The LifeGuard Pond Liner is made from 45-mil thick EPDM rubber, a material known for its durability and flexibility, making it a solid choice for various water features like ponds, waterfalls, and koi habitats. Being puncture resistant and free from plasticizers, it promises long-lasting performance without cracking or brittleness, which is important for maintaining a secure water barrier. The inclusion of an UnderGuard underlayment adds extra protection against sharp objects below the liner, reducing the risk of damage.

The Lifeguard 15 ft. x 20 ft. EPDM Pond Liner stands out as a strong choice for anyone looking to build or improve an outdoor pond or water feature. Made from 45-mil thick EPDM rubber, it offers excellent durability and flexibility. This thickness balances toughness with the ability to easily shape around curves and shelves, making it user-friendly for DIY projects. EPDM material is known for being UV resistant, so this liner holds up well under sunlight without cracking or becoming brittle over time, unlike some vinyl alternatives. Its fish and wildlife safety certifications mean it’s suitable for koi ponds, turtles, and aquatic plants, which is important if you want a healthy environment for pond life.

The LifeGuard Pond Liner is made from 45-mil thick EPDM rubber, a material known for its durability and flexibility, making it a strong choice for a variety of water features like ponds, waterfalls, and koi habitats. Its thickness helps resist punctures and wear, which is important for long-lasting protection. Unlike some liners, this one doesn’t use plasticizers that can become brittle over time, so it’s less likely to crack or split in sunlight. EPDM liners generally perform well against sun damage, helping the liner last outdoors. The included UnderGuard Underlayment adds extra protection from sharp objects below the liner, which improves durability.