Henry No. 663 Indoor And Outdoor Carpet Adhesive For Exterior Carpet & Artificial Turf Non-flammable May Be Used In Enclosed Spaces (patios, Boats, Etc.) Water Resistant When Curved Low Odor Freeze-thaw Stable Through 5 Cycles Not For Vinyl Or Urethane Back Carpets, Plank Decking, Asphalt Roofing Discovery Nbr, Sup Gal.