True to its name, Flex Seal Liquid Rubber Sealant Coating Spray brings powerful liquid rubber in a convenient spray can. It sprays out as a thick liquid, seeps into cracks and holes, and dries to a watertight, flexible, rubberized coating. Flex Seal coats, seals, protects, and will Stop Leaks Fast! Use Flex Seal spray for roof repairs, weatherizing your home, gutters, foundation and concrete waterproofing, sealing cracks and holes, pools and pool equipment, car and boat repairs, bathroom fixes, furniture repairs, and countless more indoor and outdoor projects. Flex Seal works on wood, metal, tile, concrete, masonry, fabric, glass, plastic, aluminum, porcelain, dry wall, rubber, cement, some vinyls, and more. Sprays thick liquid rubber Seeps into cracks and holes and dries to a watertight, flexible, rubberized coating Useful in countless application settings Works on an array of materials