The super sharp lines of @Trw144 roof line (See here:
has prompted me to make a design detail decision about the flat roof on my dormers.
My died in the blood old boy roofer friend says "Got to have 50mm overhang from the face and sides of the dormer. Nothing less". But that's not exactly going to produce a contemporary sharp looking roof is it?
My intention is now to use GRP/fibreglass with the minimum depth of edge I can get away with. Which is my first point of annoyance as all the pre-formed edging strips are min 100mm depth.
So what's peoples thoughts on the overhang issue? Can it only be less if you have some form of internal gutter to stop run off?