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. Gorilla Glue 1L 100% WATERPROOF - Won't break down when exposed to moisture INCREDIBLY STRONG - Expands into materials to form an incredibly strong bond BONDS DISSIMILAR MATERIALS - Stone, Metal, Ceramic, Glass, Wood, Foam, Brick & More! TEMPERATURE RESISTANT - Withstands extreme temperatures (-40 to 100 degrees C) GRIP TIME - 60 Mins