Ascend Exterior Water-Based Finish is a clear, durable finish designed for exterior application on wood, fiberglass, coated metal or painted surfaces. Dries quickly and cleans easily with soap and water. Use it on properly prepared exterior surfaces, such as railings, outdoor furniture, above waterline marine surfaces, as well as wooden, fiberglass and steel doors. It can also be used on interior windowsills and door frames for added ultraviolet protection.