Yes — solar panels must come down before a roof replacement and go back up after. This is called solar R&R (removal and reinstallation). For most NJ homes, R&R costs $1,500–$3,500 and can be completed the same day as the roof replacement. The biggest risk isn't the cost — it's using a contractor who handles only one side of the job, leaving you with a coordination nightmare and split warranties.
Why Do Solar Panels Need to Come Off for a Roof Replacement?
Many homeowners ask if panels can just "stay on" while the roof is replaced around them. The short answer is no. Here's why:
- Physical access: Shingles run under and around the panel mounting brackets. There is no way to properly tear off old shingles and install new ones under mounted panels without removing the mounting system entirely.
- Warranty requirement: Both roofing manufacturers (GAF, OC) and solar panel manufacturers require proper installation conditions. Installing a new roof under or around existing solar mounts voids the roofing warranty because the decking penetrations can't be properly reflashed.
- Flashing integrity: Every point where a solar mount penetrates your roof deck is a potential leak point. These penetrations must be sealed with proper flashing during a re-roof. This is impossible with panels still attached.
- Panel damage risk: Roofing work vibrates and stresses the decking. Panels left in place during a tear-off are at high risk of cracking, loosening from mounts, or having connectors damaged by falling debris.
Bottom line: Any contractor who says they can "work around" your solar panels during a roof replacement is either inexperienced or trying to cut corners. Panels must come down. The question is whether you want it handled as one coordinated job or two separate headaches.
The Solar R&R Process: 8 Steps
Here's exactly what happens on a Best Crew solar R&R + roof replacement job from start to finish:
Initial Assessment
We document your existing solar system — panel count, inverter type, string configuration, and roof penetration points. We photograph the system pre-removal so we have a verified baseline for reinstallation.
System Shutdown & DC Disconnect
The system is safely shut down following electrical safety protocols. For string inverter systems, this includes DC isolation at the inverter. For microinverter systems, we shut down at the trunk cables. All work is done by trained technicians, not general labor.
Panel Removal
Panels are removed from the mounting rails, labeled for their original positions, and stored safely on the ground (padded, not stacked). Connectors are capped to prevent dirt ingress. Typical removal time: 2–4 hours for a 15–20 panel system.
Mount Rail Removal
Mounting rails and flashings are removed. We inspect each roof penetration point for existing damage or improper previous installation. All penetrations are documented before the roofing crew takes over.
Full Roof Replacement
The roofing crew tears off the old roof, installs new decking where needed, new underlayment, new shingles, and all flashing. The roof is now a clean slate — ready for the solar system to be reinstalled correctly.
Mount Reinstallation with New Flashing
New rafter-mounted brackets are installed with properly installed, manufacturer-approved flashing at every penetration point. These are the most critical seals on the entire roof — done right, they never leak.
Panel Reinstallation & Wiring
Panels are re-railed in their original positions and wiring is reconnected. MC4 connector condition is verified. For Enphase microinverter systems, each microinverter is inspected during reinstall. For string systems, string voltage is measured before reconnecting to the inverter.
System Testing & Verification
The system is powered back on and output is verified. For Enphase systems, we check the Enlighten monitoring portal to confirm all panels report. For SolarEdge, we verify through the optimizer monitoring. You receive a post-installation report confirming the system is operating correctly.
How Much Does Solar R&R Cost in NJ?
Solar R&R costs depend on system size, inverter type, roof complexity, and whether any components need replacement during the process. Here are the typical ranges for NJ:
| System Size | Panel Count | R&R Cost (NJ) | Notes |
|---|---|---|---|
| Small Residential | 8–12 panels | $1,200–$2,000 | Simple system, standard pitch |
| Mid Residential | 12–20 panels | $1,800–$3,000 | Most NJ homes fall here |
| Large Residential | 20–32 panels | $2,800–$4,500 | Multiple arrays or complex layout |
| Commercial / Large | 32+ panels | $4,000–$8,000+ | Custom quote required |
Full Solar R&R Cost Guide for NJ
Detailed pricing by system type, what's included, what drives costs up, and how to get an accurate quote.
What Can Go Wrong with Solar R&R?
When solar R&R is done poorly — or when the job is split between a roofer who doesn't know solar and a solar company that doesn't know roofing — here's what goes wrong:
- Improper reflashing of penetration points: The most common failure. A roofer who doesn't understand solar mounts will simply caulk over the old holes. Within 2–3 years, these fail and create leaks at the exact points where the roof and solar system interface.
- Warranty voids: If the solar company or panel manufacturer specifies that installation must be done by a certified installer, having your roofer handle the reinstall may void the solar warranty — even if the physical install looks correct.
- Connector damage: MC4 connectors (the standard solar connector) must be mated carefully. Forced connections, debris in connectors, or damaged connector bodies are fire hazards and production losses. These issues often aren't discovered until months later.
- Incorrect restring/rewiring: String inverter systems must be rewired in the correct configuration. If panels are reinstalled in a different orientation or string order, the system may underperform and the error can be hard to diagnose remotely.
- Permit violations: In some NJ municipalities, solar reinstallation after a roof replacement triggers a new solar permit or inspection requirement. An unaware contractor skipping this step can create title problems when you sell the home.
The Coordination Problem: Why This Is Harder Than It Looks
Here's the most common scenario we hear from NJ homeowners with solar panels who need a new roof:
- Roofer says: "We don't do solar. You need to call your solar company first."
- Solar company says: "We don't do roofing. Have the roofer call us to coordinate."
- Two scheduling attempts for the same home on the same day (rarely happens cleanly)
- Two separate invoices, two sets of liability
- If anything leaks later — each company blames the other
- Roof warranty and solar warranty may conflict
- Average coordination delay: 3–6 weeks longer than necessary
- One call, one contract, one crew
- Roof and solar scheduled on the same day
- Same team handles panels and shingles — no blame gap
- One warranty covers the entire job: roof AND solar mount points
- Permits pulled for both scopes where required
- System testing included before we leave
- Typical timeline: 4–8 weeks faster than split contracts
How Best Crew Construction Handles Solar R&R
Best Crew is one of a handful of NJ contractors with the experience and training to handle both the roofing and the solar R&R under one contract. Here's what that means in practice:
- One crew, one day: Our crew removes the solar system in the morning, replaces the roof during the day, and has the solar system back up and running before we leave. For most NJ homes, this is a single 8–10 hour workday.
- One contract: You sign one contract covering the roof replacement AND the solar R&R. One price, one timeline, one point of contact.
- One warranty: Our workmanship warranty covers the entire job. If a roof penetration leaks within the warranty period, it's our problem — regardless of whether the leak is at a solar mount point or a general shingle area.
- Manufacturer warranty maintained: Our process is designed to maintain your existing solar panel warranty. We document the pre-removal state and post-reinstallation state of every component.
- NJ licensed and insured: NJ HIC #13VH12304900. Full general liability and workers' comp. We pull all required permits for both scopes.
NJ Solar System Types: How Each Affects R&R
The type of solar inverter system you have affects how complex and how risky the R&R process is. Here's a breakdown of the three main system types common in NJ:
Enphase systems are the most common microinverter in New Jersey. We're very familiar with Enphase IQ7 and IQ8 series systems. If you have Enphase, the R&R process is clean and straightforward — we verify each panel's microinverter on the Enlighten monitoring platform after reinstall.
Who to Call for Solar R&R in NJ
If you have solar panels and need a roof replacement in New Jersey, the most important thing is to find a contractor who can handle both scopes. Splitting the job between two separate companies is the leading cause of delays, warranty conflicts, and post-job leak claims.
Best Crew Construction handles solar panel removal and reinstallation as part of every roof replacement project where solar is involved. We serve Middlesex, Monmouth, Mercer, and Somerset Counties.
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More Solar & Roofing Resources
Solar R&R Service Page
Our full solar removal and reinstallation service overview for NJ homeowners
Solar R&R Cost Guide NJ
Detailed pricing by system size, inverter type, and complexity
Solar Installation NJ
New solar panel installation for NJ homeowners
Roof Replacement NJ
Full roof replacement service — the other half of the solar R&R equation
Roof Replacement Cost NJ
Full pricing guide for NJ roof replacements in 2026
NJ Homeowner's Roofing Guide
The complete roofing guide — materials, costs, permits, insurance, and more