Renowned for its incredible strength and versatility, Gorilla Glue expands into materials to create a durable bond which is 100% waterproof and resistant to extreme temperatures. Its polyurethane formula means Gorilla Glue is moisture activated and once fully cured it’s sandable and stainable. To apply this all purpose glue ,lightly dampen the surface with water, spread a thin layer of Gorilla Glue and it will foam and expand to form an incredibly strong bond to virtually any material. This makes Gorilla Glue the perfect solution for any indoors and outdoors projects.