This aluminum butyl waterproof seal duct tape can repair for roof and campers leaks, window sealing, boats, personal water crafts, canoes, PVC & plumbing pipes, sprinkler systems, seams, doors, walls, vents, EPDM Rubber Roof Patching, etc. Butyl Tape is made of pure butyl rubber with upgraded aluminum foil cover, stronger adhesive, waterproof and high temperature resistant, thicker and heavier, UV resistant , vapor prevent, anti-aging, greater sealing effect, longer service time, no cracking. In order to have maximum stickiness, it is recommended to clean the repaired surface first, then tightly press the butyl tape tightly on the clean and dry surface. No need to do Extra Waterproof Coating, EASY and EFFICIENT. Aluminum foil tape is applicable to most surfaces and different weather. Such as metal, tiles, shingle, aluminum, gypsum board, wood, fiberglass, brick, concrete and etc. It is a good helper when repairing at home, in cars, outdoors and other places.