Section 150.660 - Room Surface Finishes(A) Interior finished surfaces shall conform to local and state codes and to 105 CMR 150.000.(B) Interior wall surfaces of all areas assigned for resident housing, care, and recreation, exclusive of shower enclosures, kitchen, food preparation areas, dishwashing areas, bathrooms, toilets, utility rooms, and nourishment kitchens, shall be finished with a smooth, non-absorbent, washable surface. Walls of kitchens, food preparation areas, bathrooms, toilets utility rooms, nourishment kitchen and dishwashing areas shall be finished to a height of at least 72 inches from the finished floor with an impervious material.(C) Floors of bathrooms, toilets, showers, food preparation areas, utility rooms and nourishment kitchens shall be covered with an impervious material.(D) Cove bases shall be provided for all floors where tile covering is directed; cove bases shall not project more than a standard cove base beyond the surface of the finished floor or wall.Adopted by Mass Register Issue 1361, eff. 3/23/2018.