This EPDM rubber pre cut and boxed pond liner can be used for building all types of ponds, water gardens, basins for fountains, bog gardens, lining cracked hard shell ponds and other applications. The pond liners membrane is based on ethylene propylene diene monomer (EPDM) synthetic rubber, a highly flexible yet stable waterproofing membrane with a proven performance history in exposed applications. pond liners retains its high flexibility even in cold weather. It can easily be shaped to fit the unique contours of any pond. Pond liners shows outstanding resistance to the harmful effects of ultraviolet radiation (U.V.), ozone and other environmental conditions. pond liners exhibits a high tensile strength and an outstanding resistance to puncture and, once installed, requires little or no maintenance. pond liners is specially formulated to be safe for exposure to fish and plant life in decorative ponds while resisting microbial and algae attack. It is safe for fish and aquatic plants. Pond liners black color gives a natural look that blends with the algae that frequently grows after several months. The black color also lends greater U.V. protection while giving the illusion of greater depth.

Adding pond underlayment : Pond Underlayment has only one job and that is to protect your pond liner. 45 mil Pond liner is very strong and puncture resistant but it does have its limits. Using underlayment can improve the PUNTURE RESISTANCE of your pond liner by 400%. Pond Underlayment Material is: Non-Woven stable Polypropolyene Fiber Filaments bonded by heatset and needle punched Resist: Tears, punctures, soil chemicals Features: Extreme tolerance of Hydrocarbons, Freeze-thaw cycles, mildew, and rot

• Measures 10-feet length by 12-feet width 45 mil Firestone pond liner and matching pond underlayment.
• Firestone 45mil Pond Liner with 20 Year Warranty - Flexiable, Durable and Fish Safe
• Matching Non-Woven GeoTextile Pond Underlayment : Non-Woven stable Polypropolyene Fiber Filaments bonded by heatset and needle punched
• Pond Underlayment has only one job and that is to protect your pond liner. 45 mil Pond liner is very strong and puncture resistant but it does have its limits. Using underlayment can improve the PUNTURE RESISTANCE of your pond liner by 400%.
• Made in the USA