My roof is leaking. I went up into the attic found where, measure down from peak to the leak. I then went outside climbed up on roof to find the problem. I don't see any problem . I again measured down from the peak to roughly where I saw the leak inside. The shingles all look fine. I checked all the edges and seams where they come together, they are all tight. I don't have any broken or lifting edges, yet the dang thing leaks. How do I find the problem when I don't see any visible damage on the outside? The roof is roughly 12 years old. The shingles are rated for 25 years, they are a good, heavy shingles, not some cheap flimsy crap. Is there some trick to finding where it is leaking????

Hello all: in general my soffits are in great shape but there are a few areas that are rotting a bit and I was wondering how you guys would go about repairing this. I have purchased some artificial lumber to replace the rotted sections but I don't know if thats the best way to go. Also: how far off the roof line should I be to make sure this new boards don't pick up water from the roof and chanel it some other place and make another problem?