*****Water Proof Any Shower Pan Since a hot mop shower pan is applied in a liquid state, we can easily create a mold to fit your custom shower pan or tub. A hot mop shower pan protects any unique shape shower pan better than any other type of shower liner. *****Guaranteed Quality Ojeda Hot mop shower pans are constructed out of 4 layers of hot tar, 3 layers of #15 felt, fiberglass reinforced corners, with a sloped base that's pitched at least 1/4 in. per foot. Every shower pan is built to code, thoroughly tested, fully insured and guaranteed.