SEAL LOK is a highly durable anti-graffiti protective coating resistant to most types of graffiti, black marking, scuffing, and water marking. It forms an excellent barrier and sealer. It remains invisible and will not discolor with age. Safe to use on almost all surfaces. Use on restroom walls and partitions as well as any other interior or exterior surface you want to protect. Yields an average coverage of approximately 1,500 square feet per gallon.