Quick answer: If your roof is more than 10 years old, hiring one contractor to do both your roof replacement and solar PV installation usually saves 10–20% versus hiring two separate companies, and gives you a single warranty covering both.
When the solar+roof combo makes sense
- Your roof is older than 10 years
- You're already considering a roof replacement
- You want a single point of warranty contact
- You want to avoid removing and reinstalling solar later
When to keep them separate
- Your roof is brand new (less than 5 years old)
- You already have a trusted roofer with no solar experience