To be fair, this is a small roof, perhaps requiring 16 squares of shingles. Low pitch, easy access. Basic underlay, snow & ice shield at only the basic points, simple asphalt shingles.
As expected, tear-off revealed some rotten sheathing, and there are a few areas where the trim at the eaves will be repaired. There also proved to be three layers, over a 'torch-down' membrane, so stripping the roof appeared more involved than expected. It will be interesting to see if any of this becomes an 'added expense' at the end of the day.
On the plus side, these little surprises confirm my instinct to 'do it right,' rather than just 'patch and pray.'
Crew is three guys and a working lead. While the sky is overcast and the temps in the low 80's, the humidity is appalling.
One nice touch is the use of a rolling magnet to collect any wayward nails, etc.
Notice through this narrative the professional behavior of the contractor. He came as scheduled, fully prepared to do the job. He has proceeded steadily, without having a panic with every little twist. He has maintained a clean and organized site.