Flex Seal Liquid Rubber Sealant Coating effectively completes various repairs on multiple surface types throughout your home or business. It sprays out as a thick liquid, seeps into cracks and holes then dries into a water-tight, flexible and rubberized coating that "Stops Leaks Fast" - both indoors and outdoors. Once dry, it can be painted any color. Spray-on rubber sealant works on wood, metal, tile, concrete, fabric, glass, plastic, aluminum, porcelain, dry wall, cement, masonry and more. It's ideal for roof and gutter repairs, foundation waterproofing, pool and pool equipment repairs, bathroom fixes, weatherizing your home and much, much more. With Flex Seal, the possibilities are endless.