HAPS free self-leveling lap sealant creates a secure, secondary seal along the roof’s edges, air vents, vent pipes and screw heads. Compatible with EPDM, TPO and PVC membranes, it adheres firmly to aluminum, mortar, wood, vinyl, galvanized metal, fiberglass and concrete. Ideally suited for aftermarket use, the lap sealant is one of the highest volume products sold in RV stores today. The lap sealant is available in a HAPS free formula that meets the demanding industry requirements while providing a cleaner and safer work environment.