An incredibly strong adhesive for the toughest jobs. Glue is unaffected be extreme heat, cold, or water - great for indoor and outdoor repairs! 100% waterproof and will not break down when exposed to moisture. Creates an incredibly strong bond to most surfaces including wood, stone, metal, ceramics, foam, glass, brick, concrete and more. Glue expands 3-4 times while penetrating the surfaces for additional strength. Dried glue is paintable, stainable and sandable.