
Tar and gravel, not on edge
I have a shared roof and my neighbours roof does not have gravel on the edge like mine.
Why would one roof have it and the other not? My neighbours roof has cracks on the edge and wants me to pitch to replace the roof.
The gravel makes it damn near impossible to check for cracks. So I'm wondering how I could figure out if it needs to be replaced.
What're some methods to check? We bought our house around the same time and have no history from the previous owners. What're the risks if he replaces only his side? I don't know how the seam would be sealed unless it's all done together