Coordinating Roof Work With Existing Solar Panels

The first thing to know: a roofing crew is not a solar crew. Roofing Roughnecks handles the roof. Disconnecting, removing, storing, reinstalling and recommissioning a solar array is electrical work that belongs to a qualified solar provider, usually the company that installed or services your system. A good project puts both scopes in writing before anyone books a date.

Step 1: Gather your solar records

• Installation paperwork and the installer's contact information.
• Equipment information: panel and inverter models, racking type.
• Monitoring access, so you can confirm the system works afterward.
• Any warranty or service documents for the system and for roof penetrations.
• Lease or power purchase agreement terms, if you don't own the system outright.

We don't interpret solar contracts or warranties. Your solar provider and the documents themselves do. But having the records in hand makes every later conversation faster.

Step 2: Inspect the roof with the array in mind

During our inspection, we'll look at the roof around and, where visible, under the array, along with the mounting points. The question is whether the roof needs a repair that can be done around the panels or a replacement that requires them to come off. If the roof is near the end of its life, it rarely makes sense to reinstall panels on it.

Step 3: Bring in the solar provider

Contact the provider associated with your system and ask what they need to inspect, whether they'll remove and reinstall the array, where the equipment will be stored, and what documentation they provide. Fairfax County's permit guidance lists solar panels as work that requires a permit; ask your solar provider whether removing and reinstalling your array involves any county permit or inspection and who handles it.

Step 4: Write down who does what

• Solar provider: inspection, electrical isolation, removal, storage, reinstallation, startup and monitoring check.
• Roofer: tear-off, decking, underlayment, flashing, shingles, and roofing at the mounting locations as agreed.
• Both: who flashes and seals the new mount points, and who is responsible if something goes wrong at a penetration.
• Homeowner: approvals, access and communication between the two.

The mount points are where the two scopes overlap. Agree in writing who installs the flashing for each attachment on the new roof.

Step 5: Sequence the work

1. Solar provider disconnects and removes the array.
2. Roofer replaces the roof, coordinating with the solar provider on mount locations.
3. Solar provider reinstalls the array and restarts the system.
4. Homeowner confirms production in the monitoring app.

Each provider's schedule affects the other, and the roof is open to weather in between, so set dates together and agree on who tells you if something moves.

Planning solar on a roof you haven't replaced yet

If you're considering solar on an older roof, get the roof inspected first. Installing a long-lived array on a roof that needs replacing soon means paying for removal and reinstallation sooner than you'd like.

Records to keep at the end

• The roofing scope, final material list (product line and color) and closeout notes.
• The solar provider's confirmation that the array was reinstalled and is producing.
• Any permit or inspection records, from either provider.
• Photos of the new roof before the panels went back on, showing the mount locations.

Those photos are worth asking for. Once the panels are back, the roof under them is hard to see, and a record of how the mounts were flashed is useful to you, a future buyer, or the next contractor.

Common misunderstandings

• 'The roofer will just work around the panels.' Sometimes, for a small repair away from the array. Not for a replacement.
• 'The solar company will handle the roof.' Solar providers handle their equipment; they generally don't replace roofs.
• 'The new roof will be under the old warranty.' Roof and solar warranties are separate documents with separate terms.

HOA and appearance

If your Chantilly community has architectural review, ask whether a reroof under an existing approved array needs a new application, especially if the shingle color is changing.