Please help me. I really, really hope you can help me. I hired a roofer to replace my roof and his workers cut holes in my roof in the wrong places. These were holes for passive rooftop slant back attic vents. One sheet of OSB has 3 holes they put in it. In other places they made 2 holes near each other and one of these was covered with a scrap of OSB. The other hole they ended up not using is not covered by anything except roof underlayment. There's no sheathing in that spot at all. If someone walks on my roof in the future and steps on that spot their foot will go all the way through my roof. There are 2 different areas on my roof like this. And in other areas where they cut the holes wrong they simply stuck in small pieces of OSB about 10 inches by 18" as a patch. There are no clips of any kind, no H-clips, nothing to strengthen or fill the gap between the pieces of OSB. it is only nailed on the 10" side into a roof rafter (it's a patch between 2 roof rafters). I do not feel this is sturdy enough since it only goes part way over the 2 rafters. The roofer insists his work is just fine. Our building inspectors have a protocol of passing every residential roof without looking. I told the roofer to stop work. He drove away with the rest of my shingles and refuses to finish the work because I insisted he do the decking correctly and that little patches are unacceptable. I am now left with a partially completed roof, no roofer, and Spring rains returning. Am I wrong in saying little patches of OSB are not sturdy enough?