Gorilla Glue is a versatile, interior and exterior adhesive ideal for most household fixes and building projects: furniture repair, crafts, woodworking, project assembly and general repairs around the house. Bonds wood, stone, metal, ceramic, brick, foam board, fiberglass and much, much more! Gorilla Glue is 100% waterproof and can be used indoors and outdoors. Gorilla Glue expands 3 to 4 times its size so you only need to apply a small amount to one surface. It has an open working time of 20 minutes giving you plenty of time to set your project in place perfectly. Gorilla Glue goes on dark but dries to a light tan color and leaves an invisible glue line that can be sanded, painted and stained. It will not gum up sandpaper or dull cutting tools and is easily sanded. Gorilla Glue is completely non-toxic when cured. It is free of solvents and contains no carcinogens. It does not release fumes when either liquid or dry. Gorilla Glue is free of any acids and has a neutral pH level.