Should You Upgrade Your Roof and Go Solar at the Same Time?
- Amy Atchley
- 3 days ago
- 7 min read
If you're a Marin County homeowner weighing a roof replacement or solar installation, you've probably wondered whether to tackle one project or both. The answer, for most homeowners, is both — and the reasons are more practical than you might expect. Working with experienced roofing contractors in Marin County who also install solar means one project plan, one warranty, and a roof that's actually built to support 35+ years of energy production.
Key Takeaways
Pairing roofing and solar saves most homeowners $1,500–$2,500 compared to scheduling them separately.
Installing solar on an aging roof is one of the most expensive mistakes Marin homeowners make, re-roofing later means paying $200–$400 per panel to remove and reinstall your system.
Metal shingles (specifically the StarlingRFS system) are the best roofing material for solar in Marin County because the roof and panels share a co-warranty and are designed to last the same lifespan.
Why More Marin Homeowners Are Doing Both Projects Together
Across Marin County, homeowners are realizing that roofing and solar aren't two separate decisions, they're one home infrastructure decision.
Here's the core issue: a solar energy system is designed to last 35 years or more. A standard asphalt shingle roof in California typically lasts 20–30 years. If your roof is already 15 years old when you install solar, you're placing a long-term asset on a short-term foundation.
When that roof needs replacing in 5 years, you won't just pay for a re-roof. You'll also pay a solar crew $200–$400 per panel to disconnect, remove, store, and reinstall your system. On a typical 9 kW system (roughly 20–25 panels), that's at least a $4,000 bill — just to get back to where you started.
Doing both at once eliminates that risk entirely.
How Solar Savings Actually Work
Solar works through a system called Net Energy Metering (NEM). During the day, your panels produce more electricity than your home uses. That excess energy gets sent back to the grid, and PG&E credits your account.
At night, you either pull from those credits or, if you have a battery, use the power you stored yourself.
Under California's current NEM 3.0 rules, pairing solar with a battery storage system (like a Tesla Powerwall or Enphase IQ Battery) is now the most effective setup. PG&E pays very little for power you export during the day — but if you store it yourself and use it during peak evening hours, you capture the full value of every kilowatt-hour your roof produces.
The result: instead of paying a volatile, rising utility rate, (you're buying your power in advance at a stable, amortized rate. Many North Bay homeowners estimate their amortized solar cost at around 8 cents/kWh over 25 years. Current PG&E rates are significantly higher than that and climbing.
What Does Solar Cost in Marin County?
Pricing varies because solar is a custom system, not an off-the-shelf product. That said, here are realistic benchmarks for 2026:
● Average 9 kW system: $19,000–$26,000 before incentives
● Battery storage (13 kWh): Adds $14,000–$16,000 to the project
● Main panel upgrade (if needed): $3,000–$5,500 (common in older Marin homes)
In Marin, strict building codes, high labor costs, and the complexity of our microclimate environments (from the coastal fog of Tiburon to the sun-drenched hills of Terra Linda and Novato) all affect final pricing. Roof pitch, shading from trees, and available south-facing area are the biggest variables.
A fair benchmark for quality work is around $3.00 per watt for the solar portion. Smaller systems and steeper roofs typically cost more per watt; larger systems cost less.
When Should You Replace Your Roof Before Installing Solar?
A quick inspection can answer this. Look for these indicators that you may need to replate your asphalt shingle roof before adding solar.
Granule loss: Sandy sediment collecting in your gutters means your shingles are shedding their protective coating.
Curling or buckling edges: Shingles that curl upward are aged and will need to be replaced within a few years.
Cracked or torn shingles: Brittle shingles have typically aged past their useful life.
Age: If your asphalt roof is 20+ years old, get it inspected before committing to solar — even if it looks okay from the ground.
The threshold to keep in mind: if your roof has less than 10 years of life left, consider replacing it first.
Cost savings tip: If you have around 10 years remaining but want to avoid the future R&R cost, you can re-roof only the faces where solar will be installed — saving the cost of a full re-roof now and the removal cost later.
The Best Roofing System for Solar in Marin County: Metal Shingles
If you're replacing your roof anyway, the material you choose matters a lot for your solar investment.
The StarlingRFS metal shingle system is the strongest choice for Marin County homeowners pairing roof and solar. Here's why:
Lifespan match: A metal roof can last 50+ years. Your solar panels can stay mounted for their full operational life without ever needing a re-roof underneath them.
Co-warranty: The StarlingRFS system was designed specifically for solar. Installing solar on it does not void the manufacturer's warranty — which is not true of standard asphalt shingles.
Shared workmanship warranty: When one contractor installs both the roof and the solar, you get a single combined workmanship warranty. One call handles any issue.
Thermal performance: Metal reflects heat, which keeps your attic cooler in summer and reduces overall cooling loads.
Aesthetics: Starling Metal shingles are color-matched to your solar panels for a cohesive, finished look — something asphalt can not do. .
Especially in Marin, a metal shingle roof paired with solar is the highest-value long-term decision homeowners can make for their home.
Why One Contractor for Both Projects Makes a Difference
The accountability argument is straightforward. When two separate companies install your roof and your solar, there's room for debate about who the clear owner is if something goes wrong. The roofer points to the solar company. The solar company points to the roofer.
When one contractor handles both, there's no ambiguity.
Additionally, that one contractor will be extra motivated to get it right the first time. A solar+roofing company is especially aware of water-proofing codes and requirements.
Beyond accountability, bundling saves money on shared overhead and scheduling. Most homeowners who bundle with Amy's Roofing & Solar save between $1,500 and $2,500 compared to hiring two separate companies.
What to ask any roofing and solar contractor in Marin County
Who does the actual installation work — your own employees or subcontractors?
Does this quote include permits and interconnection application fees?
What is the price per watt on the solar portion?
What happens to my roofing warranty if you drill into it for solar mounts?
Experienced, locally rooted roofing contractors in Marin County will answer these questions directly. Hesitation or deflection is a signal.
Financing Your Roof and Solar Upgrade
The upfront cost of a combined roof and solar project is real. The good news is that several financing options exist specifically for this kind of home energy upgrade:
Figure: An online HELOC platform with loan amounts from $15k–$750k and pre-approvals available quickly.
GoGreen Financing: State-backed financing with rates between 3.27%–8.12% (as of October 2024). No closing costs, no lien. Requires pre-approval before work begins.
SGIP (Self-Generation Incentive Program): A California rebate program for battery storage. Homeowners in high fire-risk areas or with medical needs may qualify for significantly higher rebate levels.
Redwood Credit Union: Offers home equity loans, HELOCs, and solar loans from 7.99%.
When you factor in the monthly energy savings against a loan payment, many homeowners find the net monthly cost of going solar is lower than what they were paying PG&E for the first 10 years or so, and then it’s just savings in your pocket.
What to Do Next
Get a roof inspection first. Before you request solar quotes, know what your roof's condition is. An honest inspection tells you whether you're replacing, patching, or staying put — and that shapes everything else.
Request a bundled quote. Ask specifically for a combined roof and solar estimate. Compare the bundle price to separate bids from individual roofing and solar companies.
Ask about the StarlingRFS system. Ask your contractor about the co-warranty benefits and how the system integrates with your solar design.
Review your financing options. A free consultation with Amy's Roofing & Solar can walk you through which program may best fit your needs. .
Note: Every home is different. Roof pitch, sun exposure, shading, and electrical panel age all affect what your project will look like and cost. A site visit is the best way to get accurate numbers.
Ready to Talk Through Your Roof and Solar Options?
Amy's Roofing & Solar works with Marin County homeowners from Novato to Sausalito, handling roofing, solar, and battery backup under one roof, with one warranty, and one team that knows your home from start to finish.
Reach out for a free estimate and find out whether your home is a good candidate for a combined upgrade.
📞 Call: (707) 981-9801
Frequently Asked Questions
Do I have to replace my roof before going solar?
Not always. If your roof is in good condition and has 15 or more years of life remaining, you may be able to install solar without a replacement first. A professional inspection is the best way to know. If your roof is closer to the end of its life, replacing it first (or bundling both projects) will save you significant money down the road.
How much do roofing contractors in Marin County charge to remove and reinstall solar panels for a re-roof?
Expect to pay $200–$400 per panel for removal, storage, and reinstallation. On a 20-panel system, that's $4,000–$8,000 added to the cost of your re-roof, which is exactly why bundling roof and solar together upfront makes financial sense for most homeowners.
What makes metal shingles better than asphalt for solar in Marin County?
Asphalt shingles typically last 20–30 years, which means they may need replacement before your solar system is aged out in 35+ years. Installing solar on asphalt also voids most manufacturer warranties when third-party companies drill into them. Metal shingles (particularly the StarlingRFS system) are designed to co-exist with solar, carry a matching warranty, and last long enough that your panels never have to come down for a re-roof.
What financing options are available for a combined roofing and solar project?
Options include the state-backed GoGreen Financing program, SGIP battery rebates, HELOCs through Redwood Credit Union or Figure, and the federal 30% Investment Tax Credit on solar and battery costs. See the full financing resource page for current rates and eligibility details.
