Firestone PondGard Features & Benefits Easy to Install PondGard comes in a large variety of panel sizes to match your needs and reduce the amount of field seaming required. When necessary, dependable field seams can be made with Firestone’s QuickSeam Tape System, which requires no special training or expensive equipment to install. High Flexibility PondGard remains flexible in a variety of temperatures, from -45° F (-43°C) to 180°F (82°C), enabling it to be installed year round in a variety of climates and terrain. High Elongation PondGard can elongate over 300%, which enables the membrane to stretch and conform to objects in the substrate. Superior Weathering Resistance PondGard has a documented performance history in exposed applications, exhibiting outstanding resistance to ultraviolet (UV) radiation and ozone. Outstanding Aging Stability PondGard is a non-crystalline material. It contains no plasticizers that can migrate and lead to premature membrane failure due to embitterment and cracking. Fish Friendly PondGard is a specially formulated EPDM membrane designed to be used safely in the presence of fish and plant life.