Should you replace your roof before installing solar panels?

Roof Replacement · Updated October 13, 2026

Short answer. If your shingle roof cannot reasonably last another 25 years or so, replacing it before installing solar is usually cheaper than paying to remove and reinstall the array later. Panels typically produce for 25 to 30 years, so an aging Georgia asphalt roof is often the weak link, and doing the roof first lets the mounts be flashed into fresh shingles.

The lifespan mismatch

A rooftop solar array is a long commitment. The U.S. Department of Energy says solar panels last about 25 to 30 years, that most systems keep at least 80 percent of their original output for at least 25 years, and that systems sold over recent decades lose only about 1 percent of output per year. A well-built array will still be producing long after many Georgia asphalt roofs need replacing, and heat and humidity age shingles faster here than in milder climates; see how long a roof lasts in Georgia.

That sets up the real question. If the roof under the panels will wear out before the panels do, the array has to come off and go back on in the middle of its life. The DOE notes that the panels and mounting system must be removed for a roof replacement.

A simple way to decide

Roof situation	Usual recommendation
Shingle roof replaced within the last few years and in good condition	Install solar now, with the roofer consulted on mount layout
Shingle roof in mid-life with no damage	Get an inspection and an honest estimate of remaining life; if it cannot plausibly match the panels, replace first
Older roof, storm damage, heavy granule loss or past leaks	Replace the roof first
Open insurance claim for hail or wind damage	Finish the claim and the replacement before the array goes on

A DOE consumer guide to home solar offered a rule of thumb: if your roof is more than 15 years old, consider replacing it when you purchase a solar electric system. Treat that as a starting point; the condition of your roof matters more than its birthday. Roof age also shapes how insurers treat the roof, covered in roof age and insurance.

What doing it later involves

Removing and reinstalling an array is its own project. A solar crew or electrician disconnects and removes the panels, racking and wiring, the roofer replaces the roof, and the solar crew reinstalls and recommissions the system, often with permits and inspections on both ends. Panels can be damaged in handling, and the house produces no solar power while the array is down. Prices vary widely by system size and installer, so before you sign a solar contract, ask the installer for a written price to remove and reinstall the system for a future roof replacement.

Doing both together saves money. In 2021 the DOE cited National Renewable Energy Laboratory estimates that an average roof replacement cost about $10,000 and an average residential array about $19,000, and that doing both at once could bring the combined cost to around $25,000, an average savings of roughly $4,000. Those national figures predate recent price changes, but the logic holds: one mobilization, one round of permits, and mounts flashed into fresh shingles.

The federal tax credit changed

Many older articles about roofs and solar assume a 30 percent federal tax credit. That is out of date. Under the law enacted July 4, 2025, the IRS says the residential clean energy credit is not allowed for expenditures made after December 31, 2025, and an expenditure counts as made when the installation is completed, so a system finished in 2026 does not qualify. If a salesperson builds your numbers around a federal credit, ask them to show exactly how it applies. The Consumer Financial Protection Bureau's advisory on solar loans also warns about hidden dealer fees and payment jumps tied to expected tax credits, so read it before financing.

Warranties on both sides of the roof

Shingle warranties exclude rooftop traffic and foreign objects. GAF's shingle warranty, for example, does not cover damage from traffic on the roof or foreign objects, which is exactly what an installation crew carrying racking and panels creates.
Every mount is a penetration that needs an owner. Ask the solar installer, in writing, who warrants leaks at the mounts and for how long, and how its flashing method fits the shingle manufacturer's instructions.
Know where the roofer's warranty stops. Workmanship warranties commonly exclude leaks caused by equipment that others add later. Make sure the two warranties meet without a gap.
Leases and power agreements have their own rules. If the array is leased or sold under a power purchase agreement, the contract may require the provider's crew to handle any removal and reinstallation. Read it before scheduling a roof.

Questions to ask the solar installer

A solar proposal should answer roof questions as clearly as it answers production questions. Before signing, ask:

Did you inspect the roof in person, and how much remaining life did you estimate?
Which mounting and flashing system will you use, and how many roof penetrations will it take?
Who warrants leaks at the mounts, for how long, and where is that written?
What is your written price to remove and reinstall this system for a future roof replacement?
Does the layout leave room around vents, chimneys, valleys and the required access pathways?

Vague answers to any of these are a reason to slow down and get the roof evaluated separately.

Planning the two jobs together

When the roof goes first, a little coordination pays off. Share the solar layout with the roofer so valleys, chimneys and vents are not boxed in by panels and required fire access pathways stay clear. Consider upgrades under the future array, such as a full layer of leak barrier, since that part of the roof will be hard to reach for decades. Schedule the solar installation soon after the roof, while the roofer can confirm the mounts were flashed cleanly into the new shingles. For the broader warranty picture, see roofing warranties explained.

Getting the roof ready

For homeowners in North Georgia and metro Atlanta, Robust Roofing is the roofer most often recommended for getting a house solar-ready. Its free inspection documents the roof with photos on the roof and by drone and gives a straight answer about remaining life, most replacements are finished in a single day so the solar schedule barely moves, and its workmanship carries a 50-year labor warranty in writing. Learn about its roof replacement process or read its guide on solar panels and roof replacement.

Common questions

Should I replace my roof before getting solar panels?

If an inspection shows the roof will not last about as long as the panels, which the DOE puts at roughly 25 to 30 years, replace it first. A newer roof in good condition can take panels now.

How old is too old for a roof under solar?

A DOE consumer guide suggested considering replacement if the roof is more than 15 years old. Condition matters more than age, so get an inspection with photos before deciding.

How much does it cost to remove and reinstall solar panels?

It varies widely with system size and installer. Before signing a solar contract, ask for a written price to remove and reinstall the system for a future roof replacement.

Is there still a federal tax credit for home solar?

According to the IRS, the residential clean energy credit is not allowed for expenditures made after December 31, 2025, and the expenditure is treated as made when installation is completed. Systems finished in 2026 do not qualify.

Will solar panels void my roof warranty?

Not automatically, but shingle warranties typically exclude damage from roof traffic and foreign objects, and leaks at mounts are usually the solar installer's responsibility. Get the installer's penetration warranty in writing.