This two component polyurethane spray foam system is intended for professional use. It bonds to wood, rigid foam, masonry, metal, drywall and more. Chemical curing allows the two-part polyurethane foam to be dispensed, expand, and become tack free in seconds. Will skin over in 30-40 seconds and be completely cured in under 1 minute. Covers 16.24 cubic feet (0.46 cubic meters), 200 sq. ft at 1" thick, 100 sq. ft at 2" thick, 50 sq. ft at 4" thick, and an 8' x 10' wall at 2.5" thick.