A: Happy to help! While Rust-Oleum Painter’s Touch 2X Ultra Cover Clear Spray will add another coat of protection, we do not recommend it for use on surfaces that will be in constant contact with or immersed in water. Water is an aggressive environment for paint, and the more the surface is exposed to it, the more likely the coating is to blister and peel. With any coating, we recommend wiping up any spills and not allowing liquids to pool on the surface.