Waterproof finish shall be provided to a height of not less than
1.8 m above the floor in shower stalls,
1.2 m above the rims of bathtubs equipped with showers, and
400 mm above the rims of bathtubs not equipped with showers.
9.29.2.2.
Materials
Waterproof finish shall consist of ceramic, plastic or metal tile, sheet vinyl, tempered hardboard, laminated thermosetting decorative sheets or linoleum.