Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
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AfterFast, Reliable Roof Installation Across Windsor
A new roof in Windsor is rarely just a roof anymore. In this town, it’s often an insurance compliance requirement, a fire-safety upgrade, and a long-term investment rolled into one project. That’s the reality homeowners face after the Kincade Fire changed how Sonoma County insurers, the fire marshal, and the building department all look at Windsor roofs.
We’ve been installing roofs across Windsor for a long time. Our crews work the tract-home subdivisions around Foothill Ranch Road, the newer builds along Brooks Road, and the older farmhouses out toward Chalk Hill Road. We know what these roofs look like when they come off, because we’ve torn off hundreds of them. If you’re considering a new roof or a full replacement, call us at (743) 200-8347. We’ll walk the roof with you, talk through what you actually need, and put a written price in your hand before any work begins.
Key Takeaways:
- Windsor roof installations are commonly driven by insurance requirements for Class A fire-rated assemblies, not just leaks.
- Older tract homes often hide second-layer shingles and rotted decking that a permitted installation will uncover.
- Every job starts with a written price and ends with the documentation your insurer needs.
- Mercer Roofing has served Windsor since 2000, first as an independent local operator and now as part of the Threshold Group family.
Why Mercer Roofing Is Windsor’s Preferred Roof Installation Company
Windsor homeowners call us because we treat the whole process like it actually works here. We know that a roof replacement in the Vintage Greens or Windsor Oaks subdivisions means dealing with HOAs, Sonoma County permits, and an insurance agent who wants paperwork before they’ll renew your policy. Most roofers don’t want that extra work. We consider it part of the job.
Every Mercer Roofing technician is background-checked, identity-verified, and arrives in a clean uniform with a photo ID badge. Before anyone sets foot on your property, you’ll get their name and photo sent to you. You’ll know exactly who’s walking up the driveway. That matters whether you’re home alone, have young kids, or just don’t like surprises at the door. It’s called the Threshold Standard, and every Mercer location is contractually held to it.
Our reputation around Windsor starts with plain talk and honest numbers. We don’t tender low and then send change orders after tear-off. We inspect first, write what we find into the price, and if something surfaces mid-job, we show you the problem and get your written approval before we touch it. Grant Whitlock, who leads our Windsor area team, has spent years walking roofs through Sonoma County. He’ll tell you what he’d do if it were his house, then hand you a number you can trust.
We’re part of the Threshold Group family of home-service companies, founded in 2000. Each location is independently owned and operated. The Windsor crews are local, dispatched and scheduled through our San Francisco Bay Area metro office, and they know the difference between a remodel in Foothill Ranch and a farmhouse out toward Chalk Hill. That local knowledge saves our customers money and headaches.
Standing Seam Metal Roof in Windsor
Standing Seam Metal Roof in Windsor is the single best upgrade a homeowner can make in this fire-adapted landscape. These roofs carry a Class A fire rating on their own, which means no additional expensive underlayments or special treatments needed to satisfy your insurer. After the Kincade Fire forced mandatory evacuations across Windsor, insurance companies got serious about this. A standing seam metal roof answers that letter from your insurer directly.
What does the job involve here? Our team strips the existing roof to the decking, repairs or replaces damaged framing, then installs a high-temp peel-and-stick underlayment before laying the metal panels. All valleys, penetrations, and sidewall flashings get sealed to keep Diablo wind events from driving rain sideways through the roof plane. The result is a roof that handles Windsor’s wet Pacific winters and dry, hot summers without cracking, lifting, or rusting.
What a Windsor Homeowner Should Expect to Pay
Here in Windsor, a full standing seam metal roof installation typically runs from $22,000 to $48,000 on a 25-40-year-old tract home, depending on roof complexity, square footage, and whether the framing needs sistering or replacement. That’s a real range, not a guess, and it includes tear-off, metal panels, underlayment, flashing, and the permit paperwork your insurer wants to see.
When Standing Seam Makes Sense
If your insurer has sent a renewal letter requiring documented proof of a Class A assembly, standing seam eliminates the question permanently. Metal also ends the replacement cycle. A properly installed standing seam roof in Windsor will last 50 years or more. You won’t be re-roofing this house again in your lifetime.
Tile Roof in Windsor
Tile Roof in Windsor doesn’t get enough credit. A real concrete or clay tile roof carries a Class A fire rating by material alone, which is exactly what post-Kincade insurance underwriters want to see in a Wildland-Urban Interface community like Windsor. Tile also handles the thermal cycling that beats up asphalt shingles here, where winter rains give way to 90-degree summers and fall Diablo wind events roll through the Petaluma Gap.
The job starts the same way: we strip to the decking, inspect the framing, and repair what needs repair. Then we install a waterproof underlayment before setting the tile. Here’s the thing most homeowners don’t realize: tile is only as good as the underlayment beneath it. Older Windsor homes with failed felt underlayment leak even when the tiles look fine. A proper Mercer installation replaces the entire waterproofing system.
Tile Roof Cost in Windsor
Expect a tile roof project in Windsor to run between $28,000 and $60,000 on a standard tract home, depending on whether you choose concrete or clay, the roof’s slope and complexity, and whether we’re adding copper flashing and upgraded ridge venting. We’ll give you a precise written number before any work begins.
The Tile-Over Effect
Many Windsor homes built in the 1990s and early 2000s had tile installed directly over lath and felt. When that felt fails, leaks pool against the decking. By the time you see stains on the ceiling, the decking may be rotted. A tear-off inspection catches this before it becomes a structural problem, and tile replacement on a fully rebuilt underlayment gives you a roof that lasts 50 years.
Trusted Brands We Service in Windsor
We install and repair roofs using manufacturer-recognized shingle and roofing brands: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For Windsor homeowners we typically stock Atlas and GAF materials in our local supply pipeline, and we can source Tamko and Boral products quickly. That means shorter lead times when you’re trying to close out an insurance requirement before your policy deadline. Ask us which system makes sense for your roof; we’ll explain the differences in plain English and give you a written recommendation and price. Call (743) 200-8347 any time, 24/7, and a live person will answer.
Common Roof Installation Problems We See in Windsor Homes
- Second-layer reroofs hiding rotted decking. Windsor’s 25-40-year-old tract homes often have two layers of shingles, which add dead load and conceal rotted wood until tear-off exposes it.
- Failed waterproofing in valleys and along penetrations. Older installations skipped ice and water shield. Leaks surface only after the wood beneath is already saturated.
- Undersized or cracked framing from decades of thermal cycling and Kincade-era heat. Rafters and ridge beams that look fine from the attic get replaced once the roof is open.
- Outdated vent and flashing details that no longer meet Sonoma County code. A permitted installation triggers upgrades a handshake reroof never catches.
Pricing for Roof Installation in Windsor, CA
A full roof installation in Windsor typically costs between $16,000 and $48,000, depending on the roofing system, the size of your roof, framing repairs uncovered at tear-off, and whether you need a Class A fire-rated assembly for insurance purposes. A standard architectural asphalt shingle roof on a 2,000-square-foot Windsor tract home will usually fall between $16,000 and $24,000. Standing seam metal pushes higher, from $22,000 on the low end. Tile runs $28,000 to $60,000. These are the figures Grant Whitlock uses when he walks a roof, and they’ll be in the written estimate you get before you sign anything. No change orders without written approval. Call (743) 200-8347 to schedule a free estimate.
We Also Serve Cities Near Windsor
Windsor is home base for this page, but our crews work throughout northern Sonoma County. We handle Roof Installation projects in Healdsburg, Santa Rosa, Sebastopol, and Calistoga, along with the unincorporated county pockets in between. If your home sits just outside Windsor proper, give us a call. We’ll let you know if we can help and get you on the schedule. Read more about our city-specific work on the Windsor page.
Serving Windsor, CA - Our Local Coverage Area
We’re based in the Windsor area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Roof Installation in Windsor
Since the Kincade Fire forced mandatory evacuations across Windsor, Sonoma County insurers have started requiring documented proof of a Class A fire-rated roof assembly before they’ll renew or write a policy. So a lot of roof replacements here start with a letter from the insurance company, not a leak. We provide the material certifications and permit pull cards your agent needs, and we hand them over at project closeout as standard practice. Call (743) 200-8347 if you’ve got an insurance letter in hand and need to move.
Often it’s two layers of shingles, no ice and water shield, and decking that’s rotted around the valleys. We tore off a roof in the Vintage Greens subdivision and found the original 1×6 skip sheathing overlaid with a second architectural layer, plus no waterproofing where three prior leak calls had been patched. We stripped to bare decking, sistered two cracked rafters, rebuilt the valley waterproofing with GAF underlayment, and closed with a Class A assembly. That’s what a real inspection catches before it becomes a bigger problem.
Diablo wind events hit Windsor from the northeast and get funneled through the Petaluma Gap, creating recurring uplift and wind-driven rain intrusion along ridge caps and sidewall flashings. We install ice and water shield in all valleys and along every penetration, and we verify the drip edge and ridge vent details meet Sonoma County wind standards. That’s the only way to stop the sideways rain leaks Windsor sees each fall.
Yes, sometimes. If your existing roof has outdated vent penetrations, missing drip edge, or framing that fails an inspection, the permit process will require those to come up to current code. We handle that by doing the inspection first, writing allowances into the contract, and getting your written approval before any surprise work is done. You’ll never see a change order you didn’t agree to in writing first.
Line by line. We give you a written, itemized price that breaks out tear-off, decking repairs, underlayment, roofing material, flashing, vents, permits, and the workmanship warranty. If another Windsor roofer gives you a different number, ask them what’s included and what’s not. Then call us at (743) 200-8347 and we’ll walk through the differences on the phone. Free, no pressure, just facts.
Call Mercer Roofing for Your Windsor Roof Installation
If you’re in Windsor and you need a new roof, a replacement, or a fire-rated upgrade for your insurer, call Grant Whitlock at Mercer Roofing. We’ll inspect the roof, explain what we find in plain English, and hand you a written price before any work starts. If anything goes wrong within a year of installation, our 365-Day Done Right Promise means we’ll make it right. Every repair and installation includes a written guarantee. And every call is answered by a live person, 24/7. Phone: (743) 200-8347.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Windsor since 2000.