Do I Need a New Roof Before Going Solar?
Solar panels are one of the longest-lasting upgrades you can make to a home. That is exactly why the roof underneath them matters: once panels are installed, any roof work below them gets harder and more expensive.
How long do solar panels last compared with a roof?
Solar panels are typically built and warrantied to keep producing power for decades. Roofs vary widely. An asphalt shingle roof ages faster in strong sun and heat, while concrete and clay tile can last much longer — although the underlayment beneath the tile usually wears out well before the tile itself.
The practical question is simple: will your roof last as long as the panels you put on it? If the answer is “probably not”, it is worth dealing with the roof first.
Why replacing the roof first can cost less
If the roof has to be replaced after solar goes on, the panels must be taken down, stored safely and reinstalled. That is extra labor you pay for, and the system is not producing power while it is off the roof. Replacing the roof first — or at the same time — avoids that second round of work.
Doing both projects together also means one schedule, one set of permits where your city allows, and one team responsible for how the roof and the solar mounts fit together.
Signs your roof should be checked before solar
- The roof is getting older and you don’t know its remaining life.
- Shingles are curling, cracking or missing, or there are granules in the gutters.
- Tiles are cracked or slipping, or you have never had the underlayment checked.
- You have had leaks or water stains on ceilings.
- The roof took wind or hail damage in a storm.
What a roof check before solar looks like
At HomeNow, the roof inspection is part of every solar estimate. We look at the roof surface, flashing, vents and — on tile roofs — the condition of the underlayment where we can access it. You get photos and a clear recommendation:
- Roof is ready: we go ahead with the solar design.
- Roof needs repairs: we include them in the estimate.
- Roof should be replaced: we price the roof and solar together so you can compare.
The bottom line
You don’t always need a new roof before going solar. But you should always know how much life your roof has left before panels go on it. A free inspection answers that question before you commit to anything.