Section 410.504 - Non-absorbent SurfacesThe owner shall provide:
(A) On the floor surfaces of every room containing a toilet, shower or bathtub and every kitchen and pantry, a smooth, noncorrosive, nonabsorbent and water proof covering. This shall not prohibit the use of carpeting in kitchens and bathrooms, nor the use of wood in the kitchen, provided they meet the following qualifications: (1) Carpeting must contain a solid, nonabsorbent, water repellent backing which will prevent the passage of moisture through it to the floor below; and(2) Wood flooring must have a water resistant finish and have no cracks to allow the accumulation of dirt and food, or the harborage of insects.(B) On the walls of every room containing a toilet, shower or bathtub up to a height of 48 inches, a smooth noncorrosive, nonabsorbent and waterproof covering.(C) On wall areas above built-in bathtubs having installed shower heads and in shower compartments up to height not less than six feet above the floor level, with a smooth, noncorrosive, nonabsorbent waterproof covering. Such wall shall form a watertight joint with each other and with either the tub, receptor or shower floor.