3 ms·
Most flat roofs aren't really flat. They're built with a slight slope, I think it's a 2% slope, or 1/4" for every 12", towards a drain.
by papercrane 3y ago
Most flat roofs aren't really flat. They're built with a slight slope, I think it's a 2% slope, or 1/4" for every 12", towards a drain.