EternaBond RoofSeal one step roof repair system is for use on virtually all roofs and roof accessories with no additional products needed. It bonds to a wide range of surfaces including roof materials such as EPDM, TPO, Hypalon, aluminum, galvanized steel, wood, and fiberglass. Creates a waterproof, moisture, and air tight barrier with no additional sealing required that remains flexible to -57°C (-70°F). RoofSeal is the best solution for RV leak repair. With no trays or solvents to clean up after use. It features a UV stable backing that will not deteriorate with fluctuating temperatures or direct sun.