(Ed DeRousse, VA License# 3380001068)
I’ve noticed while inspecting some architecturally shingled roofing, that sometimes the edges don’t lay flat, or along the ridges, the shingle doesn’t always lay flat, and it appears that moisture would be able to penetrate. But I have been told that with architectural shingle, that is normal. (I’m sorry, I don’t have any photographs at this time to display, but i can get some if necessary), but I am wondering if this is true, and where I can find more information on inspecting architectural shingle.
They’re not all the same. That condition should not be considered typical of architectural (also called dimensional) shingles. It might be typical of a particular shingle model or method of installation- like racking.