Gorilla Heavy Duty Construction Adhesive is a tough, versatile, all-weather adhesive. It's 100% adhesive formula provides a long-lasting, heavy duty bond. We call it All Surface, All Purpose. The durable, 100% waterproof formula holds up indoors and out and bonds virtually anything including subfloor, mirrors, trim, drywall, landscaping, bath surrounds, foamboard, marble and more!