GEOCEL GC55103 4500 Roof Bonding Sealant, 10.1 Ounce Cartridge, Black Lap adhesive and scrim edge sealant Remains flexible Non flammable formulation For use on asphalt shingles, steel, concrete, EPDM, primed TPO, primed PVC, black Hypalon, metal, wood, and other common building substrates