Liquid Mask Tub Surface Protector creates up to a 40 mil latex protectant coating on hard to cover surfaces like showers, tubs, and whirlpools; protecting them from scratches, bumps and burns. Great for use on porcelain, enamel, fiberglass, acrylic and glass. May be applied either by airless sprayer or paint/roller. The most efficient application is by airless sprayer with a minimum of 2,500 psi. For maximum surface protection, two thin coats of application of Liquid Mask Tub Surface Protector are recommended. Available in 1 or 5 gallon containers.