Helps create a tight seal along the edges of a roof, vents, vent pipes and screw heads. Decor Products Lap Sealer is a versatile sealer formulated for EPDM roofing, but is also compatible with most other roofing materials, including Diflex II Decor and Britek TPO Roofing. Offers excellent adhesion to aluminum, mortar, wood, vinyl, galvanized metal and concrete. Seals continuously and remains flexible.