You did the responsible thing and went solar. Now the roof underneath is failing, and the panels are in the way. To replace the roof, the whole array has to come off, the roof gets redone, and the panels go back on. It is a real project with a real bill, and one detail decides whether it is a manageable expense or a nasty surprise: whether you own the panels or lease them. Here is how it works.
The job: detach and reset
The industry calls it detach and reset, or remove and reinstall. The panels are disconnected, taken down, the racking comes off, the roof is replaced, and then it all goes back up and gets re-energized. It is not a job a roofer can simply work around, because it involves high-voltage electrical work, so a qualified solar contractor handles the electrical side while the roofer does the roof.
The full sequence looks like this:
- Shut down and de-energize the system at the inverter and panel.
- Label every panel, racking part, and wire so it goes back correctly.
- Remove the panels, then the racking, then any roof-mounted wiring.
- Replace the roof.
- Reinstall the racking, the wiring, and the panels.
- Re-energize, re-commission, and inspect that the system produces properly.
Many municipalities require a new electrical permit to recommission the system, and the panels need safe storage during the roof work, ideally indoors so wind cannot catch them. Plan for the solar work to add several days on top of the reroof.
What the detach and reset costs
This is on top of the roof itself. The panel work alone commonly runs, by aggregator and contractor estimates:
- Roughly 200 to 300 dollars per panel for the detach and reset.
- Roughly 1,500 to 6,000 dollars total for an average residential system of 15 to 25 panels.
- More for large systems: a 30-panel array can run 6,000 to 9,000 dollars.
Then add the roof replacement on top of that, which is its own cost entirely. While the panels are down, it is also the cheapest time to clean them or repair any that are damaged, since the access is already paid for.
For the roof-cost side of the equation, see how much a new roof costs. For the signs that pushed you into this in the first place, signs your roof needs replacing.
The question that changes everything: do you own the panels?
This is the single most important thing to check before you call anyone, because it determines who controls the job and what it costs.
If you own the panels, outright or on a loan, you are in charge. You hire the detach-and-reset, ideally through your original installer since they know the system, coordinate it with the roofer, and pay the per-panel cost above. Straightforward.
If your panels are leased or on a power purchase agreement, you do not own them, and the leasing company controls the process. They may require their own crew, on their schedule, and charge a fee that is often 1,500 to 4,000 dollars but has run much higher. Your lease contract spells out the terms, and they are not always in your favor.
Read the lease before you call a roofer
One homeowner with a leased system was quoted 18,000 dollars by the leasing company to temporarily remove and reinstall the panels for a reroof. That is an extreme case, not a norm, but it shows the trap. If your panels are leased, pull the contract, find the removal and reinstall terms, and get the leasing company’s fee in writing before you set any timeline with a roofer. The lease, not the roofer, is what controls this job.
Warranties: whose, and what breaks them
Two warranties are in play, and both can be jeopardized by a sloppy detach and reset. Removing and reinstalling the panels can affect the panel manufacturer’s warranty, and using an unauthorized contractor can void it outright, sometimes the whole 25-year coverage. On the other side, the new roof’s warranty often requires that any solar be removed and reinstalled correctly, so bad panel work can also compromise your fresh roof.
The protection is to use qualified, authorized installers for the panel work, document the condition of the panels before they come off, and keep the roofer and the solar crew coordinated so neither one’s work undermines the other’s warranty. If the leasing company controls the job, that coordination is theirs to manage, which is another reason to get everything in writing.
Can you skip removing them?
For a small, localized repair, you may only need to detach the panels over the damaged area. But a full roof replacement effectively requires taking the whole array down, because you cannot tear off and re-shingle the deck under panels that are still bolted to it. If a roofer proposes to reroof around your panels, be skeptical, because they cannot properly replace what they cannot reach.
The lesson for next time
If this is happening to you, there is a good chance it was avoidable. Putting solar on a roof that was already aging is what leads to paying for a detach and reset years too early. The fix, for you or anyone you know considering solar, is to sequence it right: replace the roof first if it is near the end of its life, so the panels sit on a fresh roof for their full 25-year lifespan. That is the whole argument in should you replace the roof before going solar.
Since the roof is exposed anyway this time, it is also worth choosing a durable, long-life roofing material so you are not repeating this expensive dance in a decade.
One note on incentives: do not expect a tax credit to soften this. Detach-and-reset labor is not a creditable clean-energy expense, and the federal residential solar credit ended for systems placed in service after December 31, 2025 in any case. Run the numbers without it. This is general information, not tax advice.
“If you own your panels, a reroof under solar is a manageable per-panel cost. If you lease them, the leasing company holds the cards, so read that contract before you do anything else.”
The bottom line
Replacing a roof with solar already on it means a detach and reset on top of the roof cost, commonly 1,500 to 6,000 dollars for the panel work if you own them. If you lease, the leasing company controls it, so read your contract and get their fee in writing first. Use authorized installers to protect both warranties, coordinate the two trades, and choose a durable roof so you only do this once. For getting the order right in the future, see should you replace the roof before going solar.
With Hommy you post your job once and get quotes from vetted local roofers with real ratings from other homeowners, so you can find one experienced at coordinating a reroof around an existing solar array.
