GREENchoice Weatherproof Subfloor Adhesive is a professional-strength formula designed for subfloor installations and plywood use. It provides a permanent bond that remains flexible, reduces nailing and helps eliminate squeaky floors.GREENchoice Subfloor is a VOC-compliant formula containing no ozone depleting chemicals, making it safer for you and the environment. Unlike solvent-based adhesives, it is nonflammable, emits no harmful fumes and cleans up with water.