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