S.C. Code § 5-25-780
Any woodwork, wooden lath and plaster partition or ceiling within four feet of the sides or back or six feet from the front of any heating boiler, furnace, bakery oven, coffee roaster, fire-heated candy kettle, laundry stove or other similar appliance shall be covered with metal to a height of at least four feet above the floor. This covering shall extend the full length of the boiler, furnace or heating appliance and to at least five feet in front of it. Metal shields shall be loosely attached, thus preserving an air space behind them. In no case shall such combustible construction be permitted within two feet of the sides or back of the heating appliance or five feet in front of it. No furnace, boiler, range or other heating appliance shall be placed against a wall furred with wood. Heating boilers shall be encased on sides and top by an incombustible protective covering not less than one and one-half inches thick.
S.C. Code § 5-25-780