We just had a new roof installed and one thin piece of plywood around 4"x8’ at the peak of the roof where the ridge vent is split up and cracked when roofers nailed shingles/ridge vent down.
The roof company claimed it is going to be fine and all the warranty still hold and refused
to replace the damaged plywood as it would need to remove the ridge vent system and all. I personally want them to replace since the cracked plywood is a weak spot. Not only that, I expect the roof to last 2 decades that it has to endure wind, snow and sun. Please advice.