DuPont Great Stuff Pro Wall & Floor Adhesive is a gun foam that secures subflooring, lumber, plywood, particle board, masonry, drywall, concrete and foam panels thanks to its specially formulated bond that can be used on dry, damp, or frozen material. One can of foam provides a fast-acting, long-term bond that’s equivalent to 15 quart tubes of caulk adhesive. Bonds within two hours and is fully cured in about seven days.