Roofing and solar companies: which arrangement actually protects you?

Search "roofing and solar companies near me" and you will get a mix of businesses that do both, businesses that do one and subcontract the other, and directories that do neither. The listings look interchangeable. They are not — and the difference only becomes visible years later, usually during a February rainstorm.

This is a straight comparison of the three arrangements, including where our own model is the weaker choice.

Why roofing and solar are separate trades in California

The Contractors State License Board treats them as different classifications for a reason. C-39 covers roofing — installing, repairing and waterproofing roof coverings. C-10 covers electrical work, which is what a solar array fundamentally is: a wired generation source tied into your main panel and the utility grid.

A company can hold both. A company can also hold one and legally subcontract the other to a licensed partner. What no company can do is perform roofing work in California without someone on the job carrying a valid C-39.

That gives you a fast, concrete screening step. Ask which license numbers will appear on your contract, then check each one yourself on the CSLB license lookup. It takes two minutes. If a salesperson is vague about which entity is doing the roof, that vagueness is the finding.

The three arrangements, compared honestly

1. One company, both licenses

A single business holding C-39 and C-10 does the roof and the solar with its own crews.

Where it wins: one contract, one schedule, and — most importantly — one party to call when something goes wrong. If water shows up near a mount, there is no argument about whose fault it is. That single point of accountability is the strongest argument in this whole comparison, and we are not going to pretend otherwise.

Where it can fail: breadth is not depth. Some dual-licensed companies are excellent at both. Others are a solar company that added a roofing division to capture more of the job, staffed thinly and scheduled around solar work. The label on the truck tells you nothing about which one you are getting.

How to test it: ask how many roofs the company completed last year without a solar install attached. A real roofing operation has a standalone roofing business. One that only reroofs when it is also selling panels is a solar company wearing a roofing hat.

2. A solar company coordinating a licensed roofing partner

The solar contractor owns the project — design, permits, sequencing, inspection — and brings in an established roofing company under its own licence to do the roof.

Where it wins: the roofing crew does roofs every day, all year, for customers who are not buying solar. That is a different level of practice than a solar company's in-house division gets. You also get a project manager whose job is the whole timeline rather than one trade's portion of it.

Where it can fail: it introduces a second company, and therefore the possibility of a handoff. If the coordination is nominal — a name handed over, an invoice passed through — you have effectively hired two contractors while being told you hired one. That is the worst of both models.

How to test it: ask who signs the roofing contract, who holds the roofing warranty, and who you call in year three. If the answer is "the roofer, directly, and you deal with them," that is separate hiring with a referral fee attached. If the solar company stays on the hook for the coordination and the sequencing, it is a real partner model.

This is our model, so weigh what follows accordingly. Helios holds a C-10 licence. All roofing work on our projects is performed by our vetted licensed roofing partners, under their C-39, with their licence number on the contract. We handle the solar scope, including the detach-and-reset of any existing array, and we manage the project end to end. We chose this because roofing is a trade that rewards doing it full-time — but it does mean two licensed companies touch your house, and you should ask us the same handoff questions you would ask anyone.

3. Hiring a roofer and a solar company separately

You contract each trade yourself.

Where it wins: you control both selections and can shop each on its own merits. If you already have a roofer you trust, this is a legitimate choice, and you may well pay less than a bundled price.

Where it fails: the seam. Two contracts, two schedules, two warranties, and nobody who owns the join between them. The failure mode is specific and common — a leak appears near a panel penetration, the roofer says the mount was installed wrong, the solar company says the underlayment failed, and both are technically arguing in good faith because nobody can prove otherwise. You are the one with a wet ceiling.

How to make it work anyway: get both scopes in writing before either starts, require the roofer to specify a mounting method and flashing detail the solar company has agreed to in advance, and confirm which policy covers penetration leaks. Homeowners who do this carefully do fine. Homeowners who assume it will sort itself out generally do not.

The one question that separates good arrangements from bad ones

Ask it exactly like this: "If water comes through the ceiling near a panel mount in year three, who pays to fix it, and what document says so?"

A good answer names a company, names a warranty, and offers to show you the clause. A bad answer is a reassurance. Every arrangement above can produce a good answer. The point is that you make someone give you one before you sign, not after.

Two follow-ups worth asking:

• Whose warranty covers the penetrations specifically? Roof warranties often exclude penetrations made by others. This is the exact gap that swallows leak claims.
• What happens if the roof needs work later? Panels have to come off and go back on. Ask what that costs and who does it — removal and reinstallation is a real line of work, and knowing the number in advance is better than discovering it during a repair.

Sequence matters more than most people are told

If your roof has less than about ten years left, doing it before or with the solar install is almost always cheaper than doing it after.

Panels installed on a roof that gets replaced in five years have to be removed and reinstalled — typically $3,000–$5,000 for a standard residential array, on top of the roof itself. Doing both as one project skips that entirely, uses one mobilisation, and lets the mounting be designed into the new roof rather than retrofitted onto it. We walk through the full sequencing and the break-even in solar and roof replacement together, and current California pricing by roof material is in our roof replacement cost guide.

One thing to raise with any contractor before a reroof: if you have an older net-metering agreement, ask how the work will be handled so your interconnection status is not disturbed. A straightforward panel detach-and-reset normally should not affect it, but system changes that alter capacity can, and the rules sit with your utility and the CPUC. Get the answer from your utility in writing rather than from a salesperson.

What the money looks like in 2026

Two separate numbers that people routinely blend together:

• Solar in California runs roughly $2.50–$3.50 per watt installed before incentives. See solar panel cost in California for the full breakdown.
• Roofing is priced per square foot and varies enormously by material — asphalt and composite shingle around $3.50–$8.75/sq ft, concrete and clay tile roughly $11–$25/sq ft.

On the tax side, be careful what you are told. The federal Section 25D residential clean energy credit expired on 31 December 2025, so a cash purchase today does not receive the 30% credit.

Separately — and this was true long before the expiry — a new roof was never a qualifying solar expense. The IRS is explicit that "traditional roofing materials and structural components do not qualify for the credit because they primarily serve a roofing or structural function." The narrow exception is solar roofing tiles and shingles that generate electricity while also acting as the roof surface. So if anyone tells you your new roof is 30% off because it is bundled with solar, ask them to put the citation in writing.

There is still a route to roughly 30% off the top on the solar portion: a prepaid lease, where the financier owns the system for the first five years and claims the commercial credit, then transfers ownership to you at the start of year six. The transfer is at fair market value, offset by the value of the service obligations the financier is released from, which is why it nets out to essentially nothing. We use Propel through Concert Finance and Participate Energy for this. It is not tax advice — talk to your own adviser — but it is the honest answer to "is the 30% really gone."

Frequently asked questions

Is a company that does both roofing and solar better than one that partners? Not inherently. A dual-licensed company gives you a single warranty claim, which is a real advantage. A partner model gives you a roofing crew that roofs full-time. The deciding factor is execution quality and how clearly liability is assigned in writing — not which structure it is.

Does Helios do the roofing work itself? No. Helios holds a C-10 electrical and solar licence. All roofing is performed by our vetted licensed roofing partners under their own C-39 licence, which appears on the contract. The solar work, including detaching and resetting an existing array, is ours.

Can I just replace the roof section under the array? Sometimes, and it can be a sensible economy if the rest of the roof genuinely has life left. It is worth asking about, but get an honest assessment of the surrounding roof first — a partial replacement that has to be redone in three years costs more than doing it once.

Should I replace the roof before or at the same time as solar? At the same time, coordinated as one project, if the roof needs doing within about ten years. Before is fine too. After is the expensive one.

How do I verify a contractor is licensed for the work they are doing? Look up each licence number on the CSLB site and confirm the classification matches the trade — C-39 for the roofing, C-10 for the solar. Confirm the licence is active and check the bond and workers' compensation status while you are there.

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Helios installs solar and battery across 94+ Southern California cities and statewide from San Diego to the Bay Area, and coordinates roofing through licensed partner contractors as part of a single project. If you want the roof and the solar looked at together, get a roof + solar quote or call (310) 564-8817 — and ask us the year-three question.