- New
501LSB-1 is a Dicor black self-leveling lap sealant designed to provide a secondary watertight seal around compatible RV roof edges, vents, vent pipes and screw heads. It is compatible with EPDM, TPO and PVC roofing membranes and adheres to aluminum, wood, vinyl, galvanized metal, fiberglass and concrete. Its self-leveling formula is intended for horizontal roof surfaces and remains flexible after application. Supplied in a 10.3 oz tube.