If your roof is getting older, replace it before or along with installing solar, since panels typically stay up for decades and removing them later costs money. If you already have solar, contact your installer before re-roofing, plan the removal and reinstall, expect electrical permits, and get leak responsibility at the mounts in writing.
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Solar panels usually stay on a roof for decades. Asphalt shingle roofs, the most common type in Metro Atlanta, often need replacement sooner than that, especially after years of Georgia heat, hail, and falling limbs. Getting the order of work right can save money and headaches.
Planning solar on an older roof
If your roof has some years on it, have its condition assessed before panels go up. Removing and reinstalling an array later typically costs real money and requires coordination between trades. Many homeowners whose roofs are approaching the end of their life choose to replace the roof first, or at the same time as the solar install.
Signs your roof may need attention first:
- Curling, cracking, or missing shingles, or bare spots where granules have worn away
- Soft spots in the decking, or past leaks around vents and chimneys
- Hail or wind damage that hasn't been repaired
- A roof that's already well into its expected service life
If you already have panels and need a new roof
- Contact your solar installer first. Removal and reinstallation by someone other than the original installer can affect warranties. Read your contract and warranty terms.
- Plan the sequence. Panels and racking are removed and stored safely, the roof is replaced, new flashing or mounts are installed, and the array is reinstalled and recommissioned.
- Expect permits. The electrical work involved in disconnecting and reconnecting a solar system generally needs to be done by a licensed electrician, and your local jurisdiction may require permits and inspection.
- Notify your utility if required. Some utilities need to know when a system is taken offline and reconnected.
- Get it all in writing. Clarify who is responsible for leaks at panel mounts after the work is done: the roofer, the solar company, or both.
Insurance claims
If storm damage affects both the roof and the panels, call your insurer and document everything with photos before any repairs. Policies differ on how they cover rooftop solar, so ask your agent how your system is covered and whether you need to list it on your policy.
Roof penetrations and leaks
Most rooftop arrays are attached with mounts bolted into the rafters and sealed with flashing. Done well, these are durable. Done poorly, they can leak for years before anyone notices. Ask any installer how mounts are flashed, what sealants they use, and whether they offer a roof-penetration warranty.
Solar shingles and integrated products
Some manufacturers offer solar shingles or roof-integrated products. These can look sleek, but they are often more expensive per watt than standard panels, and fewer installers service them. Compare the long-term warranty and service support carefully.
Licensing
Georgia licenses residential and general contractors and electrical contractors through boards under the Secretary of State, but requirements for roofing work in particular can vary by job and local jurisdiction. Ask each contractor which licenses they hold, and verify them on the Georgia Secretary of State's license lookup.
To coordinate roof and solar work, request help and describe your roof and system.
Frequently asked questions
Should I replace my roof before installing solar?
If your roof is well into its expected life, often yes. Replacing it first avoids paying to remove and reinstall the panels later. Have the roof assessed before signing a solar contract.
Who removes my solar panels when I need a new roof?
Ideally your original installer, or a qualified solar company if the installer is gone. The electrical disconnect and reconnect generally need a licensed electrician. Check your warranty terms first, since third-party work can affect coverage.
Do solar panels cause roof leaks?
Properly flashed and sealed mounts are durable, but poor installation can cause leaks. Ask how mounts are flashed and whether the installer offers a roof-penetration warranty.