Replacing a Roof Under Solar Panels in Torrance

Rooftop solar is meant to last decades, and so is the roof under it, but they rarely age at the same speed. Panels can outlast the roof under them, especially when solar went onto an older roof. Replacing that roof means handling both, and the order of work decides how long the system sits idle. Our solar panel detach and reset page covers the service, and our roof replacement overview shows where it fits in a whole-roof project.

Should the roof or the solar come first?

Short answer: the worn roof gets replaced first.

Installing new panels on a roof near the end of its life means paying to remove and reinstall them later. A leaking roof under panels is also harder to diagnose, since racks and flashing add penetrations that hide the source.

If you are planning solar and have an older roof, the order is the same: roof first, then panels. The roof before solar approach also avoids the removal charge entirely.

How is a re-roof under solar sequenced?

The work involves two trades and two sets of paperwork. A typical sequence looks like this, though the details depend on your system and the city:

1. Plan and permits. The roofer's permit and the solar contractor's removal and reinstall permit are lined up. Some cities will not issue the roofing permit until the solar permit exists.
2. Pre-removal check. Some cities ask for an inspection of the system before it comes off. Production numbers are worth recording.
3. Panel detach. The solar company disconnects the system, removes panels and racks, and stores them.
4. Re-roof. The roofer tears off the old covering, repairs the deck, installs new underlayment and roofing, and flashes the mounting locations.
5. Panel reset. The solar company reinstalls racks and panels, reconnects and tests.
6. Final inspections. The roof and the electrical work are signed off.

We coordinate solar panel removal and reinstallation timing with your solar company. One Google reviewer described a roofer who handled the timing for solar panel removal and reinstallation so it matched the roofing schedule, and who stayed flexible when a parts delay changed the plan. That kind of flexibility helps, because delays on either side shift the whole calendar.

Who does what, and who pulls the permits?

Solar equipment is handled by solar contractors, and the roof is handled by a roofer. They are different trades. Confirm each contractor's license on the Contractors State License Board site, and ask which of them pulls which permit. For Torrance, ask the city's Building & Safety Division how it handles a re-roof with existing solar. Cities vary on whether it is one permit or two, and on which inspections apply.

Questions for your solar company:

• Can they schedule the removal and reset around my roof date?
• What does the detach and reset include: racks, wiring, monitoring?
• What happens to my warranty or lease terms?
• Who tests the system after reinstall?

What do cities ask for when a roof has solar?

Handouts from California cities follow a pattern. Foster City asks for a pre-construction inspection of the system before panels come off and a final electrical inspection after. Some cities, according to published handouts, will not issue the roofing permit until the solar permit exists. Agoura Hills, a Los Angeles County city, says removal and reinstall is done under a separate solar permit.

Torrance may do it differently, so ask Building & Safety three things: whether one permit or two applies, which inspections are required, and whether the reinstalled system will be held to the current electrical code, including rapid shutdown. That last point changes the solar company's scope, so get the answer before you sign a detach and reset quote.

What does a solar detach and reset cost?

We do not quote prices, and we do not set the solar company's. Solar reinstall cost depends on the system size, how many panels and racks there are, the wiring and inverter type, whether the work needs a crane or special access, and the permits involved. Your solar company or its successor should give you a written quote. Compare it with the roof quote so you see the whole project cost.

Does a roof replacement void solar warranties?

We cannot answer that for your system. Solar warranty reroof questions depend on the equipment maker, the installer, and any lease or power purchase agreement. Some terms care about who removes and reinstalls the equipment. Read the paperwork and ask in writing before you book. If a solar panel roof leak is what started this, tell both contractors, because penetrations and flashing can be the source and the repair belongs in the plan.

What should you record before the panels come off?

Ten minutes of paperwork now saves an argument later:

• A screenshot of the monitoring app showing recent production, with the date.
• Photos of the array from the ground, the inverter and its label, and the electrical panel.
• The panel count and the racking layout, which your solar contract or permit file may list.
• Your warranty, lease or power purchase agreement, and the solar company's contact.
• Any past roof leak near the array, so both contractors know about it.

How do solar mounts get flashed into a new roof?

Every rack foot is a hole in the roof, and the new roof needs a flashed seal around each one. Two paths exist. The roofer can flash the mounting points as the new covering goes down, and the solar company then sets the racks on them. Or the solar company installs new flashed mounts after the roof is done. Either way, the layout has to be agreed before tear-off, because moving a foot later means a new hole.

Ask whoever flashes the mounts to show photos of each one before the panels go back. A leak at a rack foot is easy to cause and hard to trace. Our solar panel detach and reset page explains how the work is sequenced.

Questions for your roofer:

• Who flashes the mounting points, and how will I see them?
• Does the roof estimate assume the panels are already off?
• What happens to the schedule if the solar crew slips a day or two?
• How do you protect the roof surface while the panels are stacked?
• Will you be on site when the solar company resets?

What roofers tell customers about solar roofs

Here is what we check and say:

• We ask for the solar company's name and contact right away, so scheduling starts early.
• We look at the roof and the mounting points before panels come off, and we photograph what we find.
• We explain the roof options in plain terms, including whether a repair will do before the panels need to come off.
• We flash each new mount carefully, because a leak at a rack foot is easy to cause and hard to trace.
• We keep you posted if either side's timing slips, and we tell you what that does to the rest of the schedule.

Lining up the roofer and the solar company

Before you request quotes, find your solar contract, warranty and monitoring login. Call the solar company, ask them to quote detach and reset, then call us for a free roof inspection and estimate. Crown Trim Roofers will coordinate the timing with them so your system is offline for as short a stretch as the job allows.