• 100% waterproof • Bonds dissimilar materials • Water activated • Expands for incredible strength • Grip time 60 minutes • Stainable and sand-able • Temperature resistant • Interior and exterior use 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. The water activated polyurethane formula expands into materials to form an incredibly strong bond to virtually anything, making Gorilla Glue the perfect solution for a wide range of projects, both internally and externally.