Licensed & Insured
We've been installing and repairing flat roofs across Novato since 2007. From modified bitumen to TPO, we handle it all with materials from Malarkey and GAF. Get a free estimate today.
Meet Your Flat Roofing Team
We’re North Bay Roofing Co., a local crew that’s been installing flat roofs in Novato for 19 years. From Grant Ave to the hills, we know the weather and the right materials—Malarkey, GAF, and CertainTeed—to keep your property dry.
Owner-operated with 19 years of hands-on flat roofing experience across Novato and the North Bay
we back every flat roof job with full liability and workers comp
25-year workmanship warranty on all flat roof replacements, using premium materials from Malarkey, CertainTeed, GAF, and more
If your flat roof is leaking or sagging, you're not alone. We've fixed countless flat roofs in Novato neighborhoods like Bel Marin Keys and Ignacio — and we know the specific issues our coastal fog and winter rains cause. We'll inspect your roof, explain exactly what's needed, and get it done right.
When you book a flat roof replacement with us, you're getting more than just new roofing. Here's exactly what we deliver — from tear-off to final inspection.
We strip your old flat roof down to the deck, haul away every scrap, and leave your property clean. No layering over old problems.
We check your roof deck for rot or damage and make necessary repairs before we install anything new. This step keeps your new roof solid for decades.
We install Malarkey or CertainTeed modified bitumen or TPO membranes — materials we trust for Novato's sun and rain. Seams are hot-air welded or torch-applied for a watertight seal.
All penetrations, walls, and roof edges get new metal flashing and drip edge, custom-formed on-site to match your roof's angles. No caulk-only fixes.
We clean and adjust drains, scuppers, and gutters to ensure water moves off your roof fast. Standing water is the enemy of flat roofs — we eliminate it.
Every flat roof we install is backed by our 25-year workmanship warranty. Plus, manufacturer warranties on materials from GAF, Owens Corning, IKO, and Atlas.
We've replaced and repaired flat roofs across Novato and the North Bay for 19 years. Here's how we make sure every job is done right, from first call to final inspection.
Free On-Site Inspection — We come to your home, assess your flat roof's condition, and discuss your options with Malarkey or GAF materials. No obligation, just honest advice.
Custom Estimate — We provide a detailed, written quote with no hidden fees. You'll know exactly what the project costs before we start.
Prep & Protection — Our crew sets up tarps, covers your landscaping, and protects all entry points. We keep your property clean and safe throughout the job.
Flat Roof Installation — We remove old materials, repair any decking issues, and install your new roof using premium membranes and flashing. Our team works efficiently, minimizing disruption.
Final Walkthrough & Warranty — We clean up thoroughly, walk you through the completed work, and register your 25-year workmanship warranty. You get peace of mind, backed by CA CSLB #1043871.
We know you’re weighing options. Here’s how we stack up against DIY and budget roofers—honest, no fluff.
| Category | DIY | Cheap Competitor | North Bay Roofing Co. |
|---|---|---|---|
| Materials | Big-box store brands, often lower grade | Bargain-bin shingles, no manufacturer warranty | Malarkey, CertainTeed, GAF—premium only |
| Workmanship | Self-taught, no guarantee | Minimal training, rushed labor | 19 years hands-on, licensed & insured |
| Warranty | None | 1-2 years, often voided | 25-year workmanship warranty |
| Safety | High risk of falls, no insurance | Bare minimum coverage | Full liability & workers comp |
| Permits & Code | Likely skipped | May cut corners | Always permitted, meets Novato code |
| Cost | Upfront savings, hidden costs later | Low bid, but frequent callbacks | Fair price, no surprises |
| Long-Term Value | Short lifespan, leaks common | Patchwork repairs, early replacement | Built to last 30+ years |
Here's a flat roofing project we wrapped up last year — proof we know this work inside out, from materials to cleanup.
We've been installing and repairing flat roofs across Novato since 2007. Here are the questions we hear most from homeowners like you.
With proper installation and regular maintenance, a flat roof can last 20 to 30 years. We use premium materials from GAF and CertainTeed that hold up well to our wet winters and hot summers. Our 25-year workmanship warranty covers every replacement we do.
Yes, we do. Call us at (844) 640-4622 or click 'Request a Free Quote' to schedule a no-obligation inspection. We'll walk your roof, check for ponding water, blistering, or membrane damage, and give you a straight-up price — no pressure.
We install and repair TPO, PVC, modified bitumen, and built-up roofs using materials from Malarkey, CertainTeed, GAF, Owens Corning, IKO, and Atlas. Each system has its own strengths, and we'll recommend the best fit for your home's structure and budget.
Absolutely. We're storm damage specialists and have helped hundreds of Novato homeowners navigate the claims process. We'll document the damage, meet with the adjuster, and make sure your insurance covers what it should. We've been doing this since 2007.
Cost depends on roof size, material choice, and the condition of your existing decking. A typical residential flat roof replacement runs between $5,000 and $12,000. We'll give you a detailed, itemized quote so there are no surprises. Contact us for a free estimate.
We strongly advise against it. Flat roofs require precise slope, proper flashing, and seamless membrane installation to prevent leaks. One mistake can lead to water damage inside your home. Our team is licensed (CA CSLB #1043871), insured, and bonded — we've been doing this since 2007, so you can trust the job is done right.
Yes, we provide annual inspections and maintenance packages to keep your flat roof in top shape. We'll clear debris, check seams and flashings, and address small issues before they become costly repairs. It's a smart way to extend your roof's lifespan.
Trust & Credentials
We’ve been roofing Novato since 2007, and we back every flat roof job with real credentials. Our CA CSLB #1043871 license, full insurance, and 25-year workmanship warranty mean you’re covered from start to finish.
Final pricing depends on roof size, slope, access, materials, and condition of underlying decking. Ranges below are typical for a single-family home.
| Service | Typical Range | Unit |
|---|---|---|
| Roof Replacement | $9,000–$28,000 | per single-family home |
| Roof Repair | $450–$2,800 | per repair |
| Storm Damage Repair | $800–$12,000 | per claim |
| New Roof Installation | $9,500–$30,000 | per single-family home |
| Metal Roofing | $14,000–$42,000 | per single-family home |
| Shingle Roofing | $8,500–$24,000 | per single-family home |
| Flat Roofing | $6–$14 | per square foot installed |
| Gutter Installation | $850–$3,400 | per home (includes downspouts) |
| Roof Inspection | $0–$450 | per inspection (often free with replacement) |
| Emergency Roof Repair | $600–$3,500 | per emergency call |
| Skylight Installation | $950–$3,800 | per skylight installed |
Transparent Flat Roof Pricing
We know flat roof pricing can feel like a guessing game. That's why we give you a clear breakdown upfront, based on 19 years of real work in Novato and across the North Bay. Your estimate is free, and it's always detailed.
$5–$8 per sq. ft. for TPO or PVC, including labor and standard materials. Price varies by roof size, access, and current deck condition.
$500–$1,500 average for most leaks or seam issues. We'll diagnose the problem on-site and give you a fixed price before starting any work.
$2–$4 per sq. ft. for silicone or acrylic coatings. Extends your roof's life by 10–15 years and reduces cooling costs.
We'll work with your adjuster to ensure you get full coverage for flat roof repairs or replacement. No extra charge for our assistance.
All prices are estimates based on typical Novato-area projects. Your final quote will be provided after a free, no-obligation inspection. We're licensed (CA CSLB #1043871) and insured.
4.7 stars · 225+ verified reviews
North Bay Roofing Co. replaced our 22-year-old shingle roof in two days flat. The crew was respectful of our landscaping, cleaned up every nail, and the GAF system they installed looks incredible. The price was fair and they filed the permit without us having to chase it. Will absolutely call them again.
After a winter storm tore off two sections of our flashing, North Bay Roofing Co. was on-site within 24 hours. They tarped the exposed decking that same afternoon, walked us through the insurance claim process, and had the permanent repair done by end of week. Honest estimates, no upsell pressure.
I called for a pre-purchase inspection on a home in Petaluma. The inspector found two soft spots the listing agent hadn't mentioned, documented everything with photos, and gave me a written repair estimate I could use in negotiations. Saved me thousands.
We've been installing flat roofs in Novato since 2007. Call us for a free estimate on TPO, PVC, or modified bitumen. No pushy sales, just honest advice from your local crew.
CA CSLB #1043871 | Licensed, Insured & Bonded | 25-Year Workmanship Warranty
— Brian Castellano, Founder
Verify our license at www.cslb.ca.gov
225+ verified Google reviews · 4.7/5 average