I live in a wimpey style home that has the flat roofs front and back. I am awaiting my builder to replace my flat roof but it seems I have a leak elsewhere also. My flat roof finishes approximately 1 foot away from the roof edge (Gable end) and I recently noticed a damp patch on the wall. After investigating in heavy rain there is water running down under the edge of the roof behind the soffits, could this be down to the flat roof leak? if not does anybody have any ideas. I have had another mate look at it and he says that all the lead is in place so is quite baffled himself. There is no sign of leaks in the house so dont know what kind of damage its doing. Please any assistance would be appreciated.