A contractor is telling me that his roofer always installs shingles with "this amount" of overhang, yet I am hard pressed to find similar installs in my neighborhood. The box of shingles states 1/2" overhang with a drip edge, 3/4" without. The amount of overhang on my new screened in porch is 2". I have read on forums that anything 1" and under is acceptable and typically passes inspection. I live in Ohio; not in a high wind area.
I am done dealing with the contractor; it just not worth the energy or the arguing. If I choose to fix this myself, is it worth trimming the shingles back to 1/2" or should I take my chances with heat causing the shingles to bend or wind ripping them off?