Hello With the addition of our very own roofing god and comment about using flashing to stop water from getting into the soffit reminded me a problem i have of my own. In the summer i put a whole new roof structure on my house, the crack head working for me insured me he knew how to shingle valleys (i had done a couple basic roofs no valleys) so i added a gable end porch roof.. He started a couple coarses of an open valley and i could tell he didn't know what they the hell he was doing. So i picked a shingle bundle wrapper and read it and switched over to an over lapping valley. should of riped up what he did but i didn't thunder storms where on the way. Now after a heavy rain i notice that the plywood is wet for a couple inches back in the valley. I don't have fascia soffit or gutters on yet. I'm not sure if its the valley leaking there or if water is dripping back. the other side of the valley which i did does not have the problem. How is a valley normally made to stop drip back(is there a term for this) since obviously there is a gap in the drip edge there. I was going to put the corner of a square piece of flashing in flush with the drip edge.. is this the best way. thanks for the help.