Short answer: As of October 2026, the four highest-scoring roofing contractors in the Napa, CA metro on The Roofing Brief Contractor Score are Roof Solutions (77.9), Citadel Roofing & Solar (72.0), Northern California Roofing Co (69.0), Modern Method Roofing (64.3). Every one holds a manufacturer certification that can be verified independently, every rating below has been corroborated against at least one source outside the certification registry, and no company paid to appear here.
The Roofing Brief scored 4 certified roofing contractors serving the Napa metro on a published, reproducible formula, then researched each of the top four individually to confirm its record. In Napa the roof threat is fire, not hail: NOAA logged one hailstone in the county in ten years, while the 2017 Atlas Fire, the 2020 Hennessey and Glass fires and the 2025 Pickett Fire destroyed thousands of structures across the valley and its neighbours. California’s fire-class rule is the reroof rule that matters here, requiring a Class A roof in the highest-hazard zones. Six certified firms appear in the directory; two serve only Marin and Sonoma and are excluded, and four are ranked, three of them based in Vacaville.
Quick picks for Napa:
- Roof Solutions: best overall (TRB Score 77.9). Verified services: roof replacement, roof repair, slate and tile, cedar and shake, metal roofing, flat and low-slope roofing, commercial roofing.
- Citadel Roofing & Solar: best for a reroof with solar (TRB Score 72.0). Verified services: roof replacement.
- Northern California Roofing Co: best for low-slope and mixed roofs (TRB Score 69.0). Verified services: roof replacement, slate and tile, metal roofing, flat and low-slope roofing, commercial roofing.
- Modern Method Roofing: best Napa-based roofer (TRB Score 64.3). Verified services: roof replacement, metal roofing, gutters.
Why a Napa roof fails slowly rather than suddenly
California requires a Contractors State License Board licence for any job of $1,000 or more, and a reroof never qualifies for the small-job exemption because it needs a permit. Roofing is the C-39 classification; a general building contractor can include roofing in a multi-trade job, but a stand-alone reroof needs a C-39. Every C-39 must carry workers’ compensation even with no employees, and every licence carries a $25,000 bond, though a homeowner’s share of it can be small. The CSLB record shows complaint and disciplinary history.
California caps a home improvement down payment at $1,000 or 10 percent of the price, whichever is less, and gives you three business days to cancel, five if you are 65 or older, and seven days on a contract to repair damage from a declared emergency. Unlicensed repair work after a declared disaster is a felony-level offence with fines up to $10,000. We found no California rule on roofers rebating deductibles.
The City of Napa issues reroof permits over the counter: $383 for the first 20 squares and $173 per further 10 squares under the July 2025 schedule, including inspection; county examples put a typical $15,000 roof at about $507. Permits from 1 January 2026 follow the 2025 California codes. All of Napa County is Climate Zone 2, where the cool-roof rule for major reroofs does not apply, though a low-slope reroof must still be insulated.
County records show one hail report and two thunderstorm wind reports from 2016 to 2025, with $10 of recorded damage; the damaging wind is filed by forecast zone, including an 86 mph gust at Atlas Peak in February 2024. Fire is the record that matters: the Atlas, Hennessey, Glass and Pickett fires all burned in Napa County. The county’s median home was built in 1976, and 41.3 percent of the city’s homes are rented.
The 4 best roofers in Napa, CA
Scored 2026-10-12. The metro mean rating used as the Bayesian prior for Napa is 4.617, across a pool of 4 certified contractors.
| Rank | Company | TRB Score | Certification | Rating (reviews) | Adjusted | In business since | Based in |
|---|---|---|---|---|---|---|---|
| 1 | Roof Solutions | 77.9 | Master Elite | 4.9 (266) | 4.855 | 2018 | Vacaville, CA |
| 2 | Citadel Roofing & Solar | 72.0 | Master Elite | 4.7 (346) | 4.689 | not published | Vacaville, CA |
| 3 | Northern California Roofing Co | 69.0 | Master Elite | 4.7 (130) | 4.677 | 1990 | Vacaville, CA |
| 4 | Modern Method Roofing | 64.3 | Master Elite | 4.4 (38) | 4.523 | not published | Napa, CA |
1. Roof Solutions: best overall (TRB Score 77.9)
Roof Solutions is based in Vacaville, CA, in business since 2018, led by Ray Ragsdale, owner and president, Not accredited, A+ rating, one resolved complaint in three years, and holds Master Elite standing on the GAF certification registry.
| Score component | Points | Max |
|---|---|---|
| Certification tier | 24 | 35 |
| Adjusted rating | 34.2 | 40 |
| Review corpus depth | 14.3 | 15 |
| Metro proximity | 5.4 | 10 |
| Total | 77.9 | 100 |
Independently corroborated:
- Roof Solutions Inc holds C-39 licence 1046710, active, issued November 2018, renewing 30 November 2026; no complaint disclosure.. CSLB licence record
- Not accredited, A+; business started November 2018; one complaint in three years, a 2025 tile repair dispute the customer confirmed was resolved.. BBB business profile
- Owner Ray Ragsdale established the company in 2018; its service counties include Napa, with pages for Napa, Yountville and American Canyon.. Company website
What they actually do. Residential reroofing and repair in tile, shake, metal, single-ply and coatings, plus commercial and property-management roofing.
Services we could verify: roof replacement, roof repair, slate and tile, cedar and shake, metal roofing, flat and low-slope roofing, commercial roofing.
Why it ranks here. A roofing-only Vacaville firm about 18 miles east, at Master Elite with 266 GAF reviews averaging 4.9 and a clean licence record. Its site publishes Napa, Yountville and American Canyon service pages. The licence, BBB and the company agree on 2018.
Best fit for: Napa homeowners with tile or shake roofs who want a roofing specialist with a clean licence history.
What we would want clarified. Its licence comes up for renewal on 30 November 2026, so check it is still active, and it is based outside the county. We publish this because a ranking that only prints the flattering findings is an advertisement, not an assessment.
Verify the certification yourself on the GAF registry listing. The number carried on that listing is (707) 718-3778, which is the registry’s contact line and is often a directory tracking number rather than the contractor’s own: take the number from the company’s own website and compare the two.
2. Citadel Roofing & Solar: best for a reroof with solar (TRB Score 72.0)
Citadel Roofing & Solar is based in Vacaville, CA, led by Dieter Folk, president, Not accredited, A rating, two complaints in three years, and holds Master Elite standing on the GAF certification registry.
Certifications held: Master Elite (GAF), Owens Corning top tier (locator). Certification by more than one manufacturer is uncommon and requires meeting each programme’s separate standards for insurance, training and track record.
| Score component | Points | Max |
|---|---|---|
| Certification tier | 24 | 35 |
| Adjusted rating | 27.6 | 40 |
| Review corpus depth | 15.0 | 15 |
| Metro proximity | 5.4 | 10 |
| Total | 72.0 | 100 |
Independently corroborated:
- Licence 647149, first issued 1992, was reissued on 24 September 2026 to JAJ Roofing LLC, trading as Citadel Roofing and Solar, with general building, roofing, electrical, insulation and solar classes; no complaint disclosure.. CSLB licence record
- MARS Energy Group announced on 27 August 2026 that it had acquired Citadel, describing it as a new-construction roofing and solar contractor for homebuilders that also reroofs; existing management stays.. Acquisition announcement
- Not accredited, rated A for two complaints in three years, both about solar work and both answered.. BBB business profile
- Lists Napa and American Canyon among its Northern California service areas.. Company website
What they actually do. New-construction roofing and solar for homebuilders, reroofing, retrofit solar and battery storage.
Services we could verify: roof replacement.
Why it ranks here. A large Vacaville roofing and solar contractor with 346 GAF reviews averaging 4.7, the deepest base here, Master Elite status and Owens Corning’s top tier. It was sold in August 2026, and its licence was reissued to a new company in September. By its new owner’s account most of its work is new homes for builders.
Best fit for: Homeowners combining a reroof with solar panels or batteries.
What we would want clarified. It changed hands weeks ago, reroofing is a secondary line, and BBB rates it A because of two answered solar complaints; confirm who will run your job under the new owner. We publish this because a ranking that only prints the flattering findings is an advertisement, not an assessment.
Verify the certification yourself on the GAF registry listing. The number carried on that listing is (707) 446-5500, which is the registry’s contact line and is often a directory tracking number rather than the contractor’s own: take the number from the company’s own website and compare the two.
3. Northern California Roofing Co: best for low-slope and mixed roofs (TRB Score 69.0)
Northern California Roofing Co is based in Vacaville, CA, in business since 1990, led by Greg Lynn, owner and president, BBB accredited since 26 August 2022, A+ rating, no complaints, and holds Master Elite standing on the GAF certification registry.
| Score component | Points | Max |
|---|---|---|
| Certification tier | 24 | 35 |
| Adjusted rating | 27.1 | 40 |
| Review corpus depth | 12.5 | 15 |
| Metro proximity | 5.4 | 10 |
| Total | 69.0 | 100 |
Independently corroborated:
- N I R West Coast Inc, trading as Northern California Roofing Co, holds licence 593448 with general building and C-39 classes, active since 1990.. CSLB licence record
- Over a 2014 low-slope roof in San Rafael, the Registrar adopted a settlement in December 2018 that revoked the licence, stayed the revocation and imposed two years’ probation from January 2019, a $30,000 disciplinary bond and $4,914 in costs. The firm did not admit the allegations.. CSLB case N2016-373
- Accredited since August 2022 with an A+ rating; business started 1990; 47 employees; no complaints.. BBB business profile
- A dedicated Napa page listing completed Napa-area projects in shingle, PVC and metal.. Company website
What they actually do. Residential reroofing in shingle, tile and metal, commercial TPO and PVC, and tile underlayment replacement.
Services we could verify: roof replacement, slate and tile, metal roofing, flat and low-slope roofing, commercial roofing.
Why it ranks here. A Vacaville roofer since 1990, with the licence, BBB and its site agreeing, at Master Elite with 130 GAF reviews averaging 4.7 and a dedicated Napa page. Its licence carries a disclosed disciplinary case: a 2018 settlement over a 2014 flat roof that put it on two years’ probation, ending in 2021.
Best fit for: Homeowners with low-slope or mixed roofs who want a long-established firm that names Napa.
What we would want clarified. Read the CSLB disclosure first: its licence was revoked with the revocation stayed and placed on probation in 2019 over a flat roof, which it did not admit. We publish this because a ranking that only prints the flattering findings is an advertisement, not an assessment.
Verify the certification yourself on the GAF registry listing. The number carried on that listing is (707) 447-5655, which is the registry’s contact line and is often a directory tracking number rather than the contractor’s own: take the number from the company’s own website and compare the two.
4. Modern Method Roofing: best Napa-based roofer (TRB Score 64.3)
Modern Method Roofing is based in Napa, CA, led by Bret Hummer, owner, BBB accredited since 13 November 2008, A+ rating, no complaints, and holds Master Elite standing on the GAF certification registry.
| Score component | Points | Max |
|---|---|---|
| Certification tier | 24 | 35 |
| Adjusted rating | 20.9 | 40 |
| Review corpus depth | 9.4 | 15 |
| Metro proximity | 10.0 | 10 |
| Total | 64.3 | 100 |
Independently corroborated:
- Modern Method Roofing Co Inc holds licence 704733 with general building and C-39 classes, active, reissued in 2021 with Bret Joseph Hummer as qualifier; no complaint disclosure; bond held as a $25,000 cash deposit.. CSLB licence record
- An earlier Modern Method Roofing Co C-39 licence in Napa was issued in August 1953.. CSLB licence 140129
- Accredited since November 2008 with an A+ rating; incorporated 1979; 50 employees; no complaints.. BBB business profile
- Napa-based; serves Napa, American Canyon and nearby Sonoma and Marin towns; reroofing, metal, solar and walking decks.. Company website
What they actually do. Residential reroofing, metal roofing, solar, walking decks and gutters.
Services we could verify: roof replacement, metal roofing, gutters.
Why it ranks here. The only ranked firm based in Napa, on Coombs St, with a licence lineage on the state register going back to a 1953 Napa roofing licence and BBB accreditation since 2008 without a complaint. It is at Master Elite with 38 GAF reviews averaging 4.4. Its site says 1952, a year before the oldest licence, so we give no single year.
Best fit for: Napa homeowners who want a long-established local roofer.
What we would want clarified. Its 4.4 rating from 38 reviews is the lowest of the four; the current licence was reissued to a new company in 2021. We publish this because a ranking that only prints the flattering findings is an advertisement, not an assessment.
Verify the certification yourself on the GAF registry listing. The number carried on that listing is (707) 255-8090, which is the registry’s contact line and is often a directory tracking number rather than the contractor’s own: take the number from the company’s own website and compare the two.
Roofers based in Napa
Four certified firms are ranked here, three of them based in Vacaville. These five are based in Napa, hold active CSLB C-39 roofing licences with no complaint disclosures, and are BBB A+. Owens Corning’s directory lists no network roofer based in Napa County. They are not scored and we are not recommending them.
| Company | Verified credential |
|---|---|
| Stubbs Roofing Incorporated | C-39 licence 356100 since 1978 on London Way in Napa; BBB accredited since 2008 at A+, no complaints. |
| Advanced Roofing Company Inc | C-39 licence 787137 since 2000 in Napa; BBB accredited since 2002 at A+, no complaints. |
| Napa Valley Roofing & Construction LLC | General building and C-39 licence 773839 since 2000, reissued 2023, on Soscol Ferry Rd; BBB accredited since 2025 at A+. |
| Caliber Roofing | C-39 licence 867572 since 2005 on Sierra Ave in Napa; BBB A+, not accredited, no complaints. |
| Performance Roofing | C-39 licence 723105 since 1996 on Broadmoor Dr in Napa; BBB A+, not accredited, no complaints. |
Roof replacement and repair in Napa, CA
Short answer: In Napa, start with Roof Solutions for tile and shake roofs, Citadel Roofing & Solar to combine a reroof with solar, Northern California Roofing Co for low-slope or mixed roofs, and Modern Method Roofing, the only ranked firm based in Napa. The rule that matters most: in a very high fire hazard severity zone, replacing more than half the roof in a year means the whole roof must be at least Class A.
In Napa the roof threat is fire, not hail. County records show one hail report and two thunderstorm wind reports from 2016 to 2025, with $10 of recorded damage, though the damaging wind is filed by forecast zone, including an 86 mph gust at Atlas Peak in February 2024. The fire record is what matters: the 2017 Atlas Fire destroyed 783 structures, the 2020 Glass Fire destroyed 1,528 in Napa and Sonoma counties, and the Hennessey and Pickett fires also burned in the county. The City of Napa’s fire hazard material notes that embers travel long distances and ignite roofs and attics through their vents.
The City of Napa issues reroof permits over the counter: $383 for the first 20 squares and $173 per further 10 squares under the July 2025 schedule, including inspection. Permits from 1 January 2026 follow the 2025 California codes, and any replacement roof must be torn off to the deck. In a very high fire hazard severity zone the whole roof must be at least Class A whenever more than half of it is replaced in a year, and any repair must use Class A material too; the roofer must give you certification of the covering’s fire class. All of Napa County is Climate Zone 2, where the cool-roof rule for major reroofs does not apply, though a low-slope reroof must still be insulated.
California requires a Contractors State License Board licence for any job of $1,000 or more, and a reroof never qualifies for the small-job exemption because it needs a permit. A stand-alone reroof needs a C-39 roofing licence, and every C-39 must carry workers’ compensation even with no employees. A home improvement down payment is capped at $1,000 or 10 percent of the price, whichever is less, and you have three business days to cancel, five if you are 65 or older, and seven days on a contract to repair damage from a declared emergency. On a replacement cost policy, state regulations require the insurer to replace all items in the damaged area to a reasonably uniform appearance when replacements do not match.
Roof Solutions, a roofing-only Vacaville firm with 266 GAF reviews averaging 4.9, does residential reroofing and repair in tile, shake, metal, single-ply and coatings, and publishes Napa, Yountville and American Canyon pages. Citadel Roofing & Solar suits a reroof paired with solar or batteries, though it changed hands in August 2026 and reroofing is a secondary line. Northern California Roofing Co reroofs in shingle, tile and metal and installs commercial TPO and PVC, but read its disclosed CSLB disciplinary case first. Modern Method Roofing, on Coombs St in Napa, offers reroofing, metal roofing and gutters, with 38 GAF reviews averaging 4.4.
| Rule | What applies | Source |
|---|---|---|
| Contractor licence | CSLB licence for any job of $1,000 or more; a stand-alone reroof needs a C-39 licence, which must carry workers’ compensation | Cal. Bus. and Prof. Code 7048, 7057, 7125 |
| Down payment cap | $1,000 or 10 percent of the price, whichever is less | Cal. Bus. and Prof. Code 7159 |
| Class A roof | In a very high fire hazard severity zone, the whole roof must be at least Class A when more than half is replaced in a year; repairs must use Class A material; the roofer must give a fire-class certificate | Cal. Health and Safety Code 13132.7 |
| Napa reroof permit | Issued over the counter; $383 for the first 20 squares and $173 per further 10 squares, including inspection | City of Napa master fee schedule, July 2025 |
| Cancellation right | Three business days; five if you are 65 or older; seven days on a contract to repair damage from a declared emergency | California home improvement law |
| Insurance matching | When replaced items do not match, the insurer replaces all items in the damaged area to a reasonably uniform appearance (replacement cost policies) | Cal. Code Regs. tit. 10, 2695.9(a)(2) |
| 25 percent rule | California has no 25 percent rule; its statewide trigger is 50 percent | 2025 California Residential Code |
Related guides: roof replacement cost in California; the 25% roofing rule in California and every other state; how to decide between roof repair and replacement; how to read and compare a roof replacement quote; how to compare roof repair quotes; what homeowners insurance covers on a roof.
3 severe weather reports in a decade, and why that matters in Napa
Aggregate hail counts tell you very little about a specific roof. These are the individual events: every severe-weather report logged by the National Weather Service across the 1 county of the Napa, CA statistical area over ten years, with the dates, the stone sizes and the towns they landed on. Over that decade the metro logged 1 hail report, 2 severe thunderstorm and high wind reports and 1 tornado. The database’s property-damage fields are left blank for most of these reports, so it carries no usable loss total for this metro and we do not quote one.
The largest hail on record in a decade
| Date | Stone size | Reported near | County |
|---|---|---|---|
| 11 June 2017 | 0.25 in | Calistoga | Napa |
The largest stone on record for this metro fell on 11 June 2017 near Calistoga, measured at 0.25 inches. That is below the size at which hail normally damages a shingle roof.
Wind. The strongest thunderstorm gust logged in the metro was 57 knots, about 66 mph, near Yountville on 16 August 2020. Asphalt shingles begin lifting at roughly 67 mph when they are correctly nailed, and considerably below that when they are not.
Tornadoes. 1 tornado touched down in these counties over the decade, the strongest rated EF0 near Oak Knoll on 27 April 2016.
What the National Weather Service wrote about it
The NWS logs a written account of each severe-weather episode. This is its description of the 11 June 2017 event near Calistoga, reproduced verbatim:
On June 11 an upper level low moved through the region bringing showers and thunderstorms in the late afternoon/early evening. The event brought minor roadway flooding and small hail.
A roof in this metro is built against events like that one, as recorded by the agency that recorded it rather than by a contractor selling the repair.
When it happens. Severe weather reports cluster in April (1), June (1), August (1). The worst years on record were 2016 (1), 2017 (1), 2020 (1). If you are scheduling non-urgent work in Napa, the months outside that window are when crews are least stretched and least likely to be triaging emergency callouts ahead of your job.
Source: NOAA National Centers for Environmental Information, Storm Events Database, county-level detail files 2016 to 2025, filtered to the counties of this statistical area by The Roofing Brief. Damage figures are as reported to the NWS and undercount insured losses.
What to do with this. Hail is not the governing risk in Napa. Weight your decision toward wind rating, ventilation and flashing detail rather than paying extra for impact-rated shingles.
Wildfire and the roof: Atlas, Hennessey, Glass, and California’s fire-class rules
On the night of 8 October 2017 the Atlas Fire broke out in the hills east of Napa. Driven by offshore winds, it burned 51,624 acres in Napa and Solano counties, destroyed 783 structures and killed six people, according to CAL FIRE. Three years later lightning on 17 August 2020 started the Hennessey Fire, which merged into the LNU Lightning Complex, burning 363,220 acres across five counties and destroying more than 1,491 structures, with three deaths in Napa County.
Six weeks after that the Glass Fire started on 27 September 2020 and nearly quadrupled in a single day in dry, gusty offshore winds, forcing the evacuation of all of Calistoga; it destroyed 1,528 structures in Napa and Sonoma counties. The Pickett Fire north of Calistoga in August 2025 burned 6,803 acres and emptied rural communities again.
The City of Napa’s own fire hazard material explains why roofs matter: the hazard model emphasises embers, which travel long distances and ignite vegetation, roofs, attics through their vents, and decks. Inside mapped fire hazard zones the state’s wildfire construction rules, defensible space and hazard disclosure on sale all apply, and Napa County adopted the State Fire Marshal’s 2025 map, adding new areas to those rules.
California’s fire-class statute is the rule a reroof must meet. In a very high fire hazard severity zone the whole roof must be at least Class A whenever more than half of it is replaced in a year, and any repair must use Class A material too; elsewhere in state fire areas the floor is Class B. The roofer must give you certification of the covering’s fire class, and untested wood shakes cannot be sold or installed.
For a Napa homeowner the first question is the property’s fire hazard zone under the 2025 map. Then ask the roofer for a Class A assembly and the written fire-class certification, ember-resistant vents, and a C-39 licence checked on the CSLB site, where any discipline appears.
Napa’s wildfire record and the rules on a reroof
| Item | Figure or rule | Source |
|---|---|---|
| Atlas Fire, October 2017 | 51,624 acres; 783 structures destroyed; 6 deaths | CAL FIRE incident record |
| LNU Lightning Complex, August 2020 | 363,220 acres; 1,491+ structures destroyed | NOAA NCEI, zone rows |
| Glass Fire, September 2020 | 67,484 acres; 1,528 structures destroyed | CAL FIRE incident record |
| Hail reports, Napa County, 2016 to 2025 | One | NOAA NCEI Storm Events |
| Strongest zone gust | 86 mph at Atlas Peak, 4 February 2024 | NOAA NCEI, zone rows |
| Class A roof required | Very high hazard zones when over half replaced in a year | Cal. Health and Safety Code 13132.7 |
| Fire-class certificate | Roofer must give it to the owner | Cal. Health and Safety Code 13132.7(i) |
| Napa reroof permit | $383 for the first 20 squares | City of Napa master fee schedule, July 2025 |
| Down payment cap | $1,000 or 10%, whichever is less | Cal. Bus. and Prof. Code 7159 |
| Licence for roofing | CSLB C-39; workers’ compensation required | Cal. Bus. and Prof. Code 7057, 7125 |
Source: CAL FIRE incident records; NWS Monterey episode narratives and NOAA NCEI Storm Events Database (Napa County and zone rows); California Business and Professions Code 7028.16, 7048, 7057, 7071.6, 7125 and 7159; Health and Safety Code 13132.7; Government Code 51179 and 51182; CSLB licence records and case documents; City of Napa permit, fee and fire hazard pages; Napa County file 25-858; California Energy Commission; Owens Corning contractor locator; BBB business profiles; US Census Bureau ACS 2020 to 2024.
How to check a Napa roofer in ten minutes
Licensing is required in CA. California requires a Contractors State License Board licence for any job where labour and materials combined reach $1,000 or more, a threshold raised from $500 by Assembly Bill 2622 on 1 January 2025. The exemption never covers a reroof: under Business and Professions Code 7048 it applies only to minor work under $1,000 that needs no building permit, and is lost if the person employs anyone or advertises as a contractor. Roofing is the C-39 classification. A B General Building contractor may include roofing in a multi-trade project, but a stand-alone reroof needs a C-39 licence or a licensed roofing subcontractor (B&P 7057).
A C-39 qualifier must document at least four years of journey-level experience and normally passes both a trade examination and a law and business examination unless a statutory waiver applies. Every active licence carries a $25,000 contractor’s bond, and C-39 roofing licensees must carry workers’ compensation whether or not they have employees: roofing is one of the few classifications that cannot file the no-employee exemption.
Check here: CSLB Check a License. The CSLB record also shows complaint and disciplinary history, including citations and accusations. Treat any status other than Active as disqualifying.
For what a full replacement costs across California, including state labor rates and permit rules, see our California roof replacement cost guide.
Four checks to run before you sign anything, in any state.
- Verify certification at the source. Use the GAF verification tool rather than trusting a badge image on a company website.
- Get the certificate of insurance from the insurer, not the contractor, and confirm general liability and workers compensation are both active on the day work starts.
- Confirm who pulls the permit. If a contractor asks you to pull it as the homeowner, that moves liability onto you. Decline.
- Get warranty terms in writing before any deposit, and check the manufacturer warranty being promised actually requires the certification tier the contractor holds.
The Napa market behind this ranking
4 certified roofing contractors serve the principal cities of the Napa, CA statistical area, of which 0 hold the top President’s Club tier. The pool carries 780 customer reviews between them at a mean rating of 4.617. The statistical area had a 2024 population of 132,727, a change of -3.83% against the 2020 census base, per the U.S. Census Bureau Vintage 2024 estimates.
How these Napa rankings were produced
Every contractor in the Napa, CA pool was scored out of 100 on four published components: certification tier, a Bayesian adjusted rating, review depth and distance from the metro centre. In this metro that meant scoring 4 certified contractors, of whom 0 hold President’s Club standing and 4 Master Elite, against a metro mean rating of 4.617. The top four were then researched individually against Better Business Bureau records, state licence registers and manufacturer directories. Where that research turned up something awkward it is on the page, and no placement was paid for.
Set aside in Napa. Contractors that would otherwise have scored into the top four were removed for the reason stated. The score is computed from public data, but where the research pass finds evidence undermining an input to that score, the score is set aside.
- Able Roofing Company, which scored 62.1: Excluded on service area. A Petaluma roofer with a clean CSLB and BBB record whose website markets it as a Marin and Sonoma County roofer; none of its several hundred service pages names Napa or any Napa County town.
- Henris Roofing Co, which scored 57.1: Excluded on service area. A Petaluma roofer licensed since 1963 whose published service areas are all Sonoma and Marin County communities, with none in Napa County.
The full method, the weightings, what the GAF certification tiers actually mean, who is eligible to be ranked and what we do not claim are all set out on our roofer ranking methodology page. Last updated: October 2026. Scoring run: 2026-10-12. Corrections go to the editor and are actioned on verification.
The questions that come up most in Napa
Who is the best roofer in Napa, CA?
Roof Solutions of Vacaville, CA scores highest in the Napa metro on The Roofing Brief Contractor Score, at 77.9 out of 100 as of October 2026. It holds Master Elite certification with a 4.9 rating across 266 reviews. Highest-scoring is not the same as best fit for your specific job, and the three companies behind it score within 13.6 points.
What is the 25% rule for roofing in California?
California has no 25 percent rule; its statewide trigger is 50 percent. Inside Fire Hazard Severity Zones or Wildland-Urban Interface areas, a roof with 50 percent or more replaced in a 12-month period must be redone to new-construction Class A standards, and outside those zones the entire covering must be at least Class C. Any replacement roof must also be torn off to the deck.
Do I need a permit to replace a roof in Napa?
Yes. The City of Napa issues reroof permits over the counter, at $383 for the first 20 squares and $173 per further 10 squares under the July 2025 schedule, including inspection. Permits from 1 January 2026 follow the 2025 California codes.
Who does roof repair in Napa?
Roof Solutions, a Vacaville roofing specialist, does residential reroofing and repair in tile, shake, metal, single-ply and coatings, and publishes service pages for Napa, Yountville and American Canyon. Its licence renews on 30 November 2026, so check it is still active.
What fire rating does a new roof need in Napa?
In a very high fire hazard severity zone the whole roof must be at least Class A whenever more than half of it is replaced in a year, and any repair must use Class A material. Napa County adopted the State Fire Marshal’s 2025 map, so check your property’s zone, and ask the roofer for the written fire-class certification.
How many certified roofing contractors serve Napa?
4 contractors on the GAF certification registry serve the principal cities of the Napa, CA statistical area as of October 2026, of which 0 hold President’s Club status.
How much damaging hail does Napa get?
The Napa, CA statistical area recorded 0 hail reports of 1 inch or larger and 0 of 2 inches or larger between 2016 and 2025 in the NOAA Storm Events Database. The largest hailstone reported measured 0.25 inches.
Did any contractor pay to appear on this list?
No. The Roofing Brief takes no placement fees, no lead fees and no affiliate commission from any roofing contractor. Ranking comes entirely from the published formula applied to public registry data, followed by an individual research pass on the top four.
What was the worst hailstorm in Napa in the last ten years?
The largest hailstone logged by the National Weather Service in the Napa, CA statistical area between 2016 and 2025 measured 0.25 inches, reported near Calistoga on 11 June 2017. That is below the size at which hail normally damages a shingle roof. Across the decade the metro recorded 1 hail reports. The database’s property-damage fields are left blank for most of these reports, so it carries no usable loss total for this metro and we do not quote one.
When is the worst time of year for roof damage in Napa?
Severe-weather reports in the Napa, CA statistical area cluster in April, June, August, on the NOAA record for 2016 to 2025. Outside those months local crews are not triaging storm damage, so lead times are shorter and scheduling is easier.
Do roofers need a licence in CA?
California requires a Contractors State License Board licence for any job where labour and materials combined reach $1,000 or more, a threshold raised from $500 by Assembly Bill 2622 on 1 January 2025. The exemption never covers a reroof: under Business and Professions Code 7048 it applies only to minor work under $1,000 that needs no building permit, and is lost if the person employs anyone or advertises as a contractor. Roofing is the C-39 classification. A B General Building contractor may include roofing in a multi-trade project, but a stand-alone reroof needs a C-39 licence or a licensed roofing subcontractor (B&P 7057). A C-39 qualifier must document at least four years of journey-level experience and normally passes both a trade examination and a law and business examination unless a statutory waiver applies. Every active licence carries a $25,000 contractor’s bond, and C-39 roofing licensees must carry workers’ compensation whether or not they have employees: roofing is one of the few classifications that cannot file the no-employee exemption.
What should I check before hiring a roofer in Napa?
The CSLB record also shows complaint and disciplinary history, including citations and accusations. Treat any status other than Active as disqualifying.
Wildfire and the roof: Atlas, Hennessey, Glass, and California’s fire-class rules?
On the night of 8 October 2017 the Atlas Fire broke out in the hills east of Napa. Driven by offshore winds, it burned 51,624 acres in Napa and Solano counties, destroyed 783 structures and killed six people, according to CAL FIRE. Three years later lightning on 17 August 2020 started the Hennessey Fire, which merged into the LNU Lightning Complex, burning 363,220 acres across five counties and destroying more than 1,491 structures, with three deaths in Napa County.
Is Napa a hard market to find a good roofer in?
In Napa the roof threat is fire, not hail: NOAA logged one hailstone in the county in ten years, while the 2017 Atlas Fire, the 2020 Hennessey and Glass fires and the 2025 Pickett Fire destroyed thousands of structures across the valley and its neighbours. California’s fire-class rule is the reroof rule that matters here, requiring a Class A roof in the highest-hazard zones. Six certified firms appear in the directory; two serve only Marin and Sonoma and are excluded, and four are ranked, three of them based in Vacaville.
Why is Able Roofing Company not on this list?
Excluded on service area. A Petaluma roofer with a clean CSLB and BBB record whose website markets it as a Marin and Sonoma County roofer; none of its several hundred service pages names Napa or any Napa County town..
Roofer rankings for other metros
The Roofing Brief scores certified roofing contractors in U.S. metropolitan and micropolitan areas on the same formula.
- Best roofers in Vallejo, CA, about 13 miles from Napa
- Best roofers in Santa Rosa, CA, about 24 miles from Napa
- Best roofers in San Francisco, CA, about 36 miles from Napa
- Best roofers in Sacramento, CA, about 49 miles from Napa
- Best roofers in Stockton, CA, another CA metro on the same formula
- Best roofers in Yuba City, CA, another CA metro on the same formula
- Best roofers in Mount Vernon, WA, a metro of comparable size
See the full index of metro roofer rankings, or read how to find and vet a roofing contractor anywhere in the country.
Cite this analysis
The Roofing Brief. “Best Roofers in Napa, CA: The Roofing Brief Contractor Score.” Published October 2026. Inputs: GAF certification registry; NOAA Storm Events Database 2016-2025; U.S. Census Bureau Vintage 2024 population estimates; Better Business Bureau and independent review-platform records for each ranked contractor.