Anybody?? Maybe if I re phrase it to, what size joist timbers do I need to support & span a 15' flat roof & how far apart should they be fom each other??
Thanks in advance
cheers...Nige
At the moment I have a flat roof on my garage which is 10' wide & next to that is my utility room which is 5 'wide. The flat roof is covered with felt & chippings & covers both garage & utility room as one roof. The joists are 15' long & are supported by the shared wall between garage & utility...