gorilla heavy-duty construction adhesive is a tough, versatile, all-weather adhesive. The 100% adhesive formula provides a long-lasting, heavy-duty bond. We call it all surface, "All Purpose". The gap-filling, durable, 100% waterproof adhesive formula is perfect for indoor and outdoor projects, holds in 30 sand bonds virtually anything including subfloor, mirrors, trim, drywall, landscaping, bath surrounds, foamboard, marble and more.