I worked for a subcontractor of John Beal. Just finished 2 roofs with him. Problems .
1. Did not put on felt.
2. Did not put on drip edge.
3. No new counter flashing
The customer paid for this and it was .of done.
Not nailed properly. ie
Nails blown thru, high nails, nails at an angle, and not nailed on the nail line. These problems will cause the roof to leak and will blow or fall off within a short period of time. In short High cost