hi all. lets say i was gonna build an outbuilding garage 30sm out of block. its within 1m of a boundary so needs to be fire proof essentially right? well im wondering if i can get away with using timbers for rafters rather than steel? tbh ive never seen anyone use steel box section or steel purlins so im wondering if i can just use timbers and only the walls need to be fireproof? also i will be using tin on the roof. the gov websites dont really give much info as what is and isnt allowed , and its not like anyones gonna grass anyway once its all boarded out inside but would rather be safe than sorry.
thanks-Sam