Check roof life before designing the array
Roof age is one of the first solar questions because panels can last for decades. If a roof is near replacement age, installing solar first may create avoidable removal and reinstallation costs later. The quote should state whether roof work is needed before installation and whether any roof warranty issues are expected.
A homeowner should also ask how roof penetrations are flashed, who is responsible for leak response, and whether roof work is included in the solar contract or handled separately. If the system is leased or provider-owned, review who controls access to the equipment when roof repair is needed.