Flat roofs need a parapet wall around the edge, high enough to stop heavy rain bouncing over the front edge and down the wall. You can do away with that if you have a visible gutter on the front.
Cheers
@hugo7 started
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Flat roofs need a parapet wall around the edge, high enough to stop heavy rain bouncing over the front edge and down the wall. You can do away with that if you have a visible gutter on the front.