Do most roofs has the shingles hanf over the edge like that? Aren't they normally a liottle more flush with the edge?
Actually, quite a bit more flush. I have done my share of roofing jobs, and I can say very confidently that this one was done wrong. The shingle should overhang the rake edge by about 1/2" to 3/4", no more. I'd guess the ones in the picture are 1" to 1 1/2".
I'm not so certain of that. I can't tell from his photo, but he may have something like I have. This is my roof that was installed 5 years ago. These edge shingles come already bent to overlap the roof edge.