I have been looking at replacing the roof on the lounge (it's already stuffed which makes me confident i can't do any worse ).... and extending it out as a deck at the same time.
my problem is.... all the web searching on minimum falls and pitches for corrugated iron roofing has left me more confused than when i started. ive seen "standards" from 180mm over 9metres up to a whopping 1metre fall over 9metres.
now it would be great if everyone could go out in the dark and measure their roof pitches for me but i dont think that's going to happen.
can anyone give me a rule of thumb for calculating the minimum fall of a corrugated iron roof?