Solar Panel Removal & Reinstall for a Roof Replacement

A full roof replacement strips the roof to the deck and rebuilds it — underlayment, flashing and new covering. That cannot happen under a mounted array, so the system is shut down, detached and set aside first, then remounted once the new roof is on. A small, localized repair may need only the panels over the work area lifted. The tear-off is also the one time the deck is bare, so any deck or flashing repair is simplest then. If you do not have solar yet and the roof is near the end of its life, the order usually runs the other way: see replace your roof before installing solar?

Los Angeles. LADBS’s express permit list, with no plan check, covers a re-roof with a Class A or B roof covering weighing less than 6 pounds per square foot over existing or new solid sheathing. Class A covering is required in a Very High Fire Hazard Severity Zone, and a residential roof replacement of more than 50% of the roof area has to use a cool roof product certified by the Cool Roof Rating Council. Removing roof tiles, applying new underlayment and resetting the tiles is its own express item, with no cool roof requirement (LADBS IB P/GI 2026-003). The reinstalled array is solar work: LADBS requires an electrical permit for PV systems, and a building permit for their structural support unless the rooftop exemption applies (LADBS IB P/GI 2023-027). Confirm the permit path for the reinstall with LADBS before the tear-off. The cool roof rule is explained in cool roof requirements for a re-roof.

San Diego, for comparison, puts the whole procedure in one bulletin: removing existing roof-mounted PV for a roof renewal needs a building or combination building permit; the reinstallation must be done by a contractor holding a C-10 or C-46 license; the permit does not allow any alteration of the original equipment; the original approved plans must accompany the submittal; and a pre-removal inspection may be required (City of San Diego, Information Bulletin 301, May 2026). That last point matters everywhere: adding a battery or swapping the inverter during the re-roof is a change to the system, permitted as such, not a like-for-like reset.

Disconnecting, reconnecting and testing a PV system is electrical work: in California it falls under the C-46 Solar or C-10 Electrical classification, while the roof falls under C-39 Roofing (CSLB). A roofing company without one of those classifications should not be reconnecting the array. The cleanest arrangement is one contractor licensed for both, so the attachments, flashing and roof are built and warranted as one job; the alternative is two contractors with a written split of who owns the penetrations. How to check a license is in choosing a roofing contractor and choosing a solar installer.

Equipment warranties cover defective parts, not moving a working system. Enphase’s warranty excludes the labor of uninstalling a product or reinstalling a repaired or replacement one (Enphase). SolarEdge’s requires its products to be installed, reinstalled and handled according to its documentation, and does not cover labor for uninstalling and reinstalling on site (SolarEdge). So the detach-and-reset is paid by you, unless your installer’s contract says otherwise, and it should be done to the manufacturers’ instructions to protect the coverage that remains. Two more checks: whether your original installer’s workmanship warranty survives another contractor moving the array, and who warrants the new penetrations. The layers are laid out in roof warranty vs solar warranty and solar warranties explained.

Ask for the detach-and-reset as its own line on the roofing quote. If you are buying solar now, ask it before you sign: the CPUC’s consumer guide lists “Roughly how much will it cost to remove and re-install the panels if I need to replace my roof in the future, including inspection fees?” among the questions for any installer (CPUC).

A reinstalled system is inspected under the permit issued for the job, and codes have changed since many older arrays went up — rapid shutdown, for example. Whether a like-for-like reset has to be brought up to current requirements is the building department’s call for your permit; San Diego’s reinstall permit allows no alteration of the original equipment, so an upgrade needs its own permit. Ask the question at permitting, not on inspection day. Tile roofs add their own steps: see solar on clay tile roofs.

Figures on this page come from the primary sources below and, where noted, from Cali Energy calculations using the stated assumptions. Rates, incentives, and program terms change; each was verified September 30, 2026.

1. LADBS — Information Bulletin P/GI 2026-003, Express Permits (No Plan Check Required), re-roof items
2. LADBS — Information Bulletin P/GI 2023-027, Solar Energy Systems
3. City of San Diego — Information Bulletin 301 (May 2026): permits for solar PV, re-roofing with existing PV
4. CSLB — Description of Classifications (C-10 Electrical, C-39 Roofing, C-46 Solar)
5. CPUC — California Solar Consumer Protection Guide
6. Enphase — US Limited Warranty, IQ Microinverters (labor exclusions)
7. SolarEdge — Limited Product Warranty (effective January 1, 2026)