KRS 217.300

The side walls and ceilings of every bakery, confectionery, creamery and cheese factory, and hotel or restaurant kitchen, shall be so constructed that they can easily be kept clean. Every building, room or inclosure occupied or used for the preparation, manufacture, packing, storage, sale or distribution of food shall have an impermeable floor made of cement or tile laid in cement, brick, wood or other suitable material that can be flushed and washed clean with water.