The only reason I installed solar was because I could wrap the cost of replacing the roof in the main solar loan, which was at at 0.7% apr or something like that.
Both crews were partners with the local company who sold me the solar, and both did a stellar job.
The roof guys wrapped the whole house in tarps and later all I found in the garden was a single bolt.
The roof guy also pulled me aside and informed me that they have the six skylights ready to install, but that the old ones are pristine, good brand and in no need of replacement - saving me $6k in the process.
The solar installers worked after the roof guys, then both came to inspect.
I guess experiences vary. Won't put shameless plugs here but I'll share that the roof guys are in CT and have Renaissance and Restoration in the name