Section R302.1, Exterior walls, of the IRC, is hereby amended by deleting all exceptions and inserting in lieu thereof the following exception:
Section R302.1 Exterior walls exception #1 Accessory buildings including detached garages less than six feet (6') from a dwelling and/or less than 3 feet from a property line shall be provided with 5/8" "X" fire code sheetrock or equivalent throughout the interior, including the walls and ceiling. Any accessory structure opening(s) in wall(s) parallel to and less than six feet (6') from dwelling unit wall(s) shall be fire rated in accordance with this code.