The EPDM Rubber Roof System Lap Sealant helps create a watertight seal along a roof’s edges, around air vents, vent pipes and screw heads. It is compatible with any other roofing material. It also offers excellent adhesion to aluminum, mortar, wood, vinyl, galvanized metal and concrete. It improves the ability to continuously seal and remain flexible. Color matched, the lap sealant is UV stabized to prevent discoloration and deterioration and will not stain or discolor any material to which it is applied.