What to Expect During a Solar Detach & Reinstall for a Reroof
What to Expect During a Solar Detach and Reinstall for a Roof Replacement
If your home needs a new roof and you already have solar panels installed, one question usually comes up right away:
“What happens to the solar panels?”
Before a roofing contractor can remove your old shingles or roofing material, the solar system has to come off the roof. Once the new roof is complete, the entire system is reinstalled, reconnected, and tested to ensure it’s operating correctly.
This process is called a solar detach and reinstall, often shortened to solar D&R or solar remove and replace.
For many homeowners, this is the first time they’ve ever needed to coordinate work between a roofing company and a solar company. It can feel complicated, especially if your original solar installer is no longer in business or if you’re unsure who is responsible for each part of the project.
Fortunately, the process is straightforward when it’s properly planned. A successful detach and reinstall is as much about communication and scheduling as it is about the technical work itself.
Here’s what you can expect from start to finish.
Why Solar Panels Have to Be Removed
Solar panels are mounted directly to your roofing system using rails, attachments, flashing, and electrical equipment.
Because the mounting hardware is installed through or onto the roof, roofers generally can’t replace the roofing material with the solar array still in place.
Removing the panels allows the roofing contractor to:
Remove old roofing materials.
Inspect the roof decking.
Replace damaged wood if necessary.
Install new underlayment.
Install new shingles, tile, or roofing material.
Properly flash roof penetrations.
Attempting to reroof around existing solar panels almost always leads to problems and isn’t considered a proper roofing practice.
Removing the solar system protects both the roofing work and the solar equipment.
Step 1: Coordinating With Your Roofing Contractor
One of the most important parts of a successful solar detach and reinstall happens before anyone climbs onto the roof.
Scheduling.
The roofing contractor and solar contractor need to coordinate their work so neither crew is waiting unnecessarily.
Typically, the process follows this sequence:
The roofing project is scheduled.
The solar removal is scheduled just before roofing begins.
The roofing contractor completes the roof replacement.
The solar company returns to reinstall the system.
The solar system is tested and returned to service.
Good communication between both companies helps prevent delays that can extend the overall project.
Rather than asking the homeowner to coordinate every detail, experienced solar service companies work directly with the roofing contractor to keep the timeline moving.
Step 2: Shutting Down the Solar System
Before any equipment is removed, the solar system is safely powered down.
This includes following the proper shutdown procedure for the specific equipment installed on your home.
Depending on the system, this may involve:
Turning off the inverter.
Opening AC disconnects.
Opening DC disconnects.
Verifying the system is safely de-energized where appropriate.
Following the correct shutdown procedure protects both the technicians and the equipment during removal.
Step 3: Removing the Solar Panels
Once the system has been safely shut down, technicians begin removing the solar panels.
Each panel is carefully disconnected and lifted from the mounting system.
Because solar panels remain valuable electrical equipment, they are handled with care throughout the process.
Panels are inspected as they’re removed for signs of:
Cracked glass.
Frame damage.
Burn marks.
Loose connectors.
Existing wear.
If any issues are discovered during removal, they’re documented before reinstallation begins.
Step 4: Removing the Mounting Hardware
After the panels have been removed, the mounting system also needs to come off the roof.
This generally includes:
Rails.
Roof attachments.
Flashing components.
Clamps.
Hardware.
Wire management components.
Removing the mounting hardware allows the roofing contractor complete access to the roof surface.
Once everything has been removed, the roof is ready for replacement.
Step 5: Protecting and Storing the Equipment
While the roof is being replaced, the solar equipment needs to be stored safely.
Panels aren’t simply stacked in the yard.
They are carefully organized and protected to reduce the risk of damage during the roofing project.
Depending on the project, this may include:
Protective storage.
Organized hardware.
Secure handling of electrical components.
Careful labeling when needed.
Proper storage helps ensure the equipment is ready for reinstallation once the new roof is complete.
Step 6: The Roofing Contractor Replaces the Roof
With the solar equipment removed, the roofing contractor performs the roof replacement.
This may include:
Removing old shingles.
Replacing underlayment.
Repairing damaged decking.
Installing new flashing.
Installing the new roofing material.
Completing final roof inspections.
The solar company generally waits until the roofing work has been fully completed before returning to reinstall the system.
This avoids unnecessary interruptions for either trade.
Step 7: Reinstalling the Mounting System
Once the new roof is finished, the solar installation begins again.
The mounting hardware is carefully reinstalled according to manufacturer specifications and current installation best practices.
This includes:
Roof attachments.
Flashing.
Rails.
Mounting hardware.
Wire management.
Proper attachment and waterproof flashing are essential to maintaining the long-term integrity of the new roof.
Every roof penetration should be properly sealed to help protect against future leaks.
Step 8: Reinstalling the Solar Panels
After the mounting system is complete, the solar panels are placed back onto the roof.
Each panel is:
Positioned correctly.
Secured to the rails.
Reconnected electrically.
Inspected during installation.
Technicians verify that connectors are fully seated and that wiring is properly supported throughout the array.
Careful attention during reinstallation helps reduce the likelihood of future electrical or mechanical issues.
Step 9: System Testing and Commissioning
The final step is making sure the system operates exactly as it should.
Once reinstallation is complete, technicians perform operational testing before leaving the job site.
Depending on the equipment installed, this may include:
Verifying inverter operation.
Confirming communication with the monitoring system.
Checking system startup.
Reviewing production.
Inspecting visible wiring.
Confirming normal operation.
Verifying there are no fault codes.
The goal is to confirm that the system is producing electricity normally before the project is considered complete.
Will My Solar Panels Produce the Same After They’re Reinstalled?
One of the most common homeowner concerns is whether removing the panels will affect future production.
When a detach and reinstall is performed correctly, your system should return to normal operation after it’s reinstalled and tested.
A properly completed project includes:
Correct panel placement.
Proper electrical reconnection.
Secure mounting.
Manufacturer-approved installation practices.
Operational testing before completion.
If production isn’t consistent with expected performance after reinstallation, a diagnostic inspection can identify and correct any issues before the project is finalized.
How Long Does a Solar Detach and Reinstall Take?
Every project is different, and the timeline depends on factors such as:
The size of the solar system.
Roof complexity.
Roofing schedule.
Weather conditions.
Equipment type.
In many cases, the removal itself can be completed in a single day, with the reinstallation taking another day once the new roof is ready. Larger or more complex systems may take longer.
The overall project timeline is usually determined by the roofing contractor’s schedule, since the solar equipment remains off the roof while the reroof is underway.
The goal is to minimize downtime while allowing each trade to complete its work safely and efficiently.
What If My Original Solar Installer Is Gone?
This is a common concern.
Many homeowners discover they need a roof replacement years after their solar system was installed—sometimes only to learn that the original installer has gone out of business.
Fortunately, a detach and reinstall doesn’t require the original installation company.
An experienced solar service company can safely remove, store, reinstall, and test most residential solar systems regardless of who originally installed them.
What matters is choosing technicians who routinely work on existing solar systems and understand the equipment, mounting systems, and electrical connections involved.
Why Coordination Matters
A solar detach and reinstall isn’t just about removing panels—it’s about keeping two separate trades working together without delays.
Without proper communication, homeowners may experience:
Scheduling conflicts.
Roof delays.
Longer periods without solar production.
Miscommunication between contractors.
Unnecessary project downtime.
Working directly with the roofing contractor helps ensure the solar removal happens before roofing begins and the reinstallation starts promptly once the new roof is finished.
Good coordination keeps the project moving while reducing stress for the homeowner.
Protecting Your Roof and Your Solar Investment
Your roof and your solar system are two of the largest investments in your home, and a reroof is one of the few times they have to be managed together. A properly planned solar detach and reinstall protects both. By carefully removing the panels, mounting hardware, and wiring before roofing begins, securely storing the equipment, and reinstalling and testing the system after the new roof is complete, the process helps ensure your solar system continues operating safely and efficiently for years to come.
At Terrapin Solar, we work directly with your roofing contractor to coordinate every stage of the project. Our goal is to keep your reroof on schedule, minimize the time your system is offline, and return your solar array to service with confidence that everything has been reinstalled correctly and is producing as expected. Whether your system was installed by us or another company, we’re here to help make the detach and reinstall process as smooth and stress-free as possible.
Planning a reroof soon? See our detach & reinstall service in Utah County.