GF's Exterior 450 Stains are premium quality, exterior pigmented stains designed for outdoor projects such fences, patio furniture, garage doors, entrance doors, outdoor kitchens and interior windows. It is not recommended as a deck finish. Fortified with UV absorbers to help minimize fading and maximize performance, Exterior 450's built-in mildewcide retards mold and mildew growth. They contain U.V. absorbers and mildewcides for maximum protection from the elements. Exterior 450 Stains can be applied by brush, roll or spray. You have two options: Apply two coats Exterior 450 Stain with no topcoat for a semi-transparent look or apply one coat of stain, wipe off and apply several coats of Exterior 450 Clear Finish.