Short answer: As of October 2026, the four highest-scoring roofing contractors in the Flagstaff, AZ metro on The Roofing Brief Contractor Score are Vistas Roofing (88.7), Altitude Roofing (73.6), Northern Arizona Building and Investments (72.8), Northern Arizona Roof Services (70.0). Each is certified by a manufacturer whose register we checked by hand, each rating has been tested against a source outside that register, and nobody bought a place on this page.
The Roofing Brief scored 4 certified roofing contractors serving the Flagstaff metro on a published, reproducible formula, then researched each of the top four individually to confirm its record. Flagstaff builds roofs for 60 pounds of snow and a burning forest: its code sets a 60 psf ground snow load, makes ice barrier mandatory and bans wood shingles and shakes, after a February 2019 storm dropped a record 35.9 inches in a day and the 2022 Tunnel Fire burned at least 30 homes north of the city. Hail is a minor threat here. Arizona licenses roofers and every Flagstaff reroof needs a permit. Four certified firms appear in the directory for the area, and all four are ranked.
Quick picks for Flagstaff:
- Vistas Roofing: best overall (TRB Score 88.7). Verified services: roof replacement, roof repair, slate and tile, commercial roofing.
- Altitude Roofing: best for metal roofs (TRB Score 73.6). Verified services: metal roofing, flat and low-slope roofing, commercial roofing.
- Northern Arizona Building and Investments: best for storm damage jobs (TRB Score 72.8). Verified services: storm damage work, commercial roofing.
- Northern Arizona Roof Services: best for snow guards and heat tape (TRB Score 70.0). Verified services: flat and low-slope roofing, commercial roofing.
Weather, codes and the Flagstaff housing stock
Arizona requires a licence from the Registrar of Contractors for any roofing job: the roofing classes are R-42 and the dual CR-42, and general residential licences also cover it. The small-job exemption under $1,000 never applies to a reroof in Flagstaff because the city requires a permit for every one. Unlicensed contracting is a class 1 misdemeanour with fines from $1,000. A recovery fund can pay a homeowner’s unpaid judgment against a licensed residential contractor up to $30,000.
After a catastrophic storm in an area your insurer has designated, Arizona requires the roofer to give you two cancellation rights in bold type, within 72 hours of a claim denial and for any reason within four business days of signing, and caps the down payment at 50 percent. Since September 2026 the law also bars a roofer from paying or rebating your deductible, from acting as your adjuster, and from proposing a contract while the loss is still happening or emergency crews are on scene.
Every Flagstaff reroof needs a permit through the over-the-counter form, which asks for the roofer’s state licence and city business licence; replacing more than 100 square feet of decking moves the job to a full repair permit, and new decking must be inspected before underlayment goes on. The city still enforces the 2018 codes with its own amendments: 60 psf ground snow load, 115 mph design wind, mandatory ice barrier, only Class A or B roof coverings, and no wood shingles or shakes.
Across 2016 to 2025 Coconino County logged 32 hail reports, the largest 2.5 inches, eight thunderstorm wind reports and ten weak tornadoes, with just $471,000 of recorded damage. Flash floods off burn scars caused $12.5 million. Flagstaff’s airport averages 87 inches of snow a year, and lightning destroyed a Baderville home through its roof in July 2023. 57.7 percent of the city’s homes are rented, reflecting Northern Arizona University, and one home in six in the county is a seasonal cabin.
The 4 best roofers in Flagstaff, AZ
Scored 2026-10-09. The metro mean rating used as the Bayesian prior for Flagstaff is 4.975, across a pool of 4 certified contractors.
| Rank | Company | TRB Score | Certification | Rating (reviews) | Adjusted | In business since | Based in |
|---|---|---|---|---|---|---|---|
| 1 | Vistas Roofing | 88.7 | Master Elite | 5.0 (127) | 4.993 | 2020 | Flagstaff, AZ |
| 2 | Altitude Roofing | 73.6 | Certified | 5.0 (49) | 4.987 | 2019 | Flagstaff, AZ |
| 3 | Northern Arizona Building and Investments | 72.8 | Certified | 4.9 (82) | 4.928 | not published | Flagstaff, AZ |
| 4 | Northern Arizona Roof Services | 70.0 | Certified | 5.0 (16) | 4.981 | not published | Flagstaff, AZ |
1. Vistas Roofing: best overall (TRB Score 88.7)
Vistas Roofing is based in Flagstaff, AZ, in business since 2020, led by Jacob Lopez Perez, owner, Not accredited, A+ rating, no complaints, and holds Master Elite standing on the GAF certification registry.
| Score component | Points | Max |
|---|---|---|
| Certification tier | 24 | 35 |
| Adjusted rating | 39.7 | 40 |
| Review corpus depth | 15.0 | 15 |
| Metro proximity | 10.0 | 10 |
| Total | 88.7 | 100 |
Independently corroborated:
- ROC 329637, CR-42 roofing, active since July 2020 and renewed through July 2028. Two complaints in 2026 were closed after inspection confirmed the contractor’s compliance; no discipline.. Arizona Registrar of Contractors
- Not accredited, A+; business started June 2020; owner Jacob Lopez Perez; no complaints.. BBB business profile
What they actually do. Residential reroofing, tile roofing, leak repair and commercial roofing.
Services we could verify: roof replacement, roof repair, slate and tile, commercial roofing.
Why it ranks here. The top-scoring firm and the only Master Elite in Flagstaff, with a perfect 5.0 across 127 GAF reviews and a roofing licence since 2020, with the Registrar and BBB agreeing. Its two 2026 complaints were both resolved with compliance confirmed on inspection.
Best fit for: Flagstaff homeowners who want the highest-rated local roofer at GAF’s Master Elite tier.
What we would want clarified. It has no website we could find, and the Registrar logged two complaints in 2026, both closed without discipline. 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 (928) 310-6313, 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. Altitude Roofing: best for metal roofs (TRB Score 73.6)
Altitude Roofing is based in Flagstaff, AZ, in business since 2019, led by Arnold Alaniz, owner, Not accredited, A+ rating, no complaints, and holds Certified standing on the GAF certification registry.
| Score component | Points | Max |
|---|---|---|
| Certification tier | 12 | 35 |
| Adjusted rating | 39.5 | 40 |
| Review corpus depth | 12.1 | 15 |
| Metro proximity | 10.0 | 10 |
| Total | 73.6 | 100 |
Independently corroborated:
- ROC 325780, CR-42 roofing, active since August 2019; one 2026 complaint closed as resolved on inspection; also a minor home improvement licence from 2026.. Arizona Registrar of Contractors
- Not accredited, A+; started June 2019; owner Arnold Alaniz; no complaints.. BBB business profile
- Founded in 2019 by a Flagstaff roofer who learned the trade with his father; metal, shingle and TPO, residential and commercial.. Company website
What they actually do. Metal, asphalt shingle and TPO roofing, residential and commercial.
Services we could verify: metal roofing, flat and low-slope roofing, commercial roofing.
Why it ranks here. A Flagstaff family roofer founded in 2019, with its website, BBB and the Registrar all agreeing, and a perfect 5.0 across 49 GAF reviews. Not to be confused with a separately licensed Altitude Roofing AZ of Phoenix.
Best fit for: Homeowners considering a metal roof, which sheds Flagstaff snow well, from a local family firm.
What we would want clarified. It holds GAF’s entry Certified tier and logged one complaint with the Registrar in 2026, resolved on inspection. 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 (928) 220-7663, 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 Arizona Building and Investments: best for storm damage jobs (TRB Score 72.8)
Northern Arizona Building and Investments is based in Flagstaff, AZ, led by Gabriel Hood, owner, BBB accredited since 22 March 2024, A+ rating, no complaints, and holds Certified standing on the GAF certification registry.
| Score component | Points | Max |
|---|---|---|
| Certification tier | 12 | 35 |
| Adjusted rating | 37.1 | 40 |
| Review corpus depth | 13.7 | 15 |
| Metro proximity | 10.0 | 10 |
| Total | 72.8 | 100 |
Independently corroborated:
- ROC 349097, KB-2 dual residential and small commercial general licence, which covers residential roofing; active since December 2023 with no complaints.. Arizona Registrar of Contractors
- Accredited since March 2024 with an A+ rating; business started 2016 and LLC formed November 2023; all listed categories are roofing; no complaints.. BBB business profile
- Member listing.. Flagstaff Chamber of Commerce
What they actually do. Residential and commercial roofing and storm and insurance work.
Services we could verify: storm damage work, commercial roofing.
Why it ranks here. A Flagstaff firm with 82 GAF reviews averaging 4.9, BBB accreditation and a clean Registrar record. It is licensed through a general contractor class rather than a roofing class, which is lawful for residential roofing. Paid press releases claim two decades in roofing, while BBB says 2016 and the company and licence date from 2023, so we give no year.
Best fit for: Homeowners who want a BBB-accredited local firm with no complaints anywhere on record.
What we would want clarified. Its licence and company are only from late 2023, and its marketed history does not match the records. 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 (928) 853-1677, 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. Northern Arizona Roof Services: best for snow guards and heat tape (TRB Score 70.0)
Northern Arizona Roof Services is based in Flagstaff, AZ, led by Honorato Diaz, licence qualifier, and holds Certified standing on the GAF certification registry.
| Score component | Points | Max |
|---|---|---|
| Certification tier | 12 | 35 |
| Adjusted rating | 39.2 | 40 |
| Review corpus depth | 8.8 | 15 |
| Metro proximity | 10.0 | 10 |
| Total | 70.0 | 100 |
Independently corroborated:
- ROC 349278, CR-42 roofing, active since December 2023 with no complaints; registered to a Phoenix address, trading also as Roof Services of Arizona, under a parent company.. Arizona Registrar of Contractors
- Lists a Flagstaff office and serves Flagstaff, Bellemont, Munds Park, Parks, Williams and North Phoenix; coatings, foam, single-ply, snow guards and heat tape.. Company website
What they actually do. Residential and commercial roofing, coatings, foam and single-ply, snow guards and heat tape.
Services we could verify: flat and low-slope roofing, commercial roofing.
Why it ranks here. A licensed roofer with a perfect 5.0 from 16 GAF reviews and a Flagstaff office, and the only firm here advertising snow guards and heat tape. Its licence is registered in Phoenix under a parent company and it trades under a second name. Its site claims more than 38 years, which cannot match a licence first issued in December 2023.
Best fit for: Homeowners who want snow guards, heat tape or a coated low-slope roof.
What we would want clarified. We found no BBB profile, it has the fewest reviews here, and it is part of a two-market operation registered in Phoenix. 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 (928) 366-3504, 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.
Other licensed roofers in Flagstaff
Four certified firms are ranked here. These five are based in Flagstaff and hold an active Arizona roofing licence with no complaints on the Registrar’s record. They are not scored and we are not recommending them.
| Company | Verified credential |
|---|---|
| Polaris Roofing Systems | ROC CR-42 291406 since 2014, plus a general licence; Owens Corning network contractor on N 3rd St; BBB accredited since 2012 at A+, no complaints. |
| Arizona Metal Roofing LLC | ROC CR-42 313085 since 2017; BBB accredited since 2013 at A+, trading since 2006; a metal roofing specialist. |
| LCR Roofing, Inc. | ROC CR-42 299502 since 2015, on N 4th Street; metal and shingle, residential and commercial. |
| Flagstaff Roofing | Havasu Roofing Inc holds ROC CR-42 313293 since 2017 and a general residential licence, with a $32,500 roofing bond. |
| Ideal Roofing Company LLC | ROC CR-42 269315 since 2010; trading since 1995 according to BBB. No website found. |
Roof replacement and repair in Flagstaff, AZ
Short answer: In Flagstaff, Vistas Roofing is the highest-rated local roofer and the only Master Elite firm, handling reroofs, tile and leak repair. Altitude Roofing suits a metal roof, Northern Arizona Building and Investments handles storm work with no complaints on record, and Northern Arizona Roof Services offers snow guards, heat tape and coated low-slope roofs. The rule that matters most: every Flagstaff reroof needs a city permit, and the code makes ice barrier mandatory.
Snow and fire, more than hail, shape Flagstaff roofs. The airport averages 87 inches of snow a year, and on 21 February 2019 it recorded 35.9 inches in a single day, its all-time record. The city’s code sets a 60 psf ground snow load, and with a winter design temperature of 4 degrees an under-ventilated roof here means ice dams. The 2022 Tunnel Fire burned at least 30 homes north of the city. Hail is a minor threat: Coconino County logged 32 hail reports across 2016 to 2025, the largest 2.5 inches, with just $471,000 of recorded damage, and lightning destroyed a Baderville home through its roof in July 2023.
Every Flagstaff reroof needs a permit through the over-the-counter form, which asks for the roofer’s state licence and city business licence. Replacing more than 100 square feet of decking moves the job to a full repair permit, and new decking must be inspected before underlayment goes on. The city enforces the 2018 codes with its own amendments: 60 psf ground snow load, 115 mph design wind, mandatory ice barrier, only Class A or B roof coverings, and no wood shingles or shakes. The city’s Wildfire Resilient Homes programme offers free assessments and up to $600 toward clearing the first five feet around a house.
Arizona requires a Registrar of Contractors licence for any roofing job, under the R-42 or CR-42 roofing classes or a general residential licence, and unlicensed contracting is a class 1 misdemeanour with fines from $1,000. A recovery fund can pay a homeowner’s outstanding judgment against a licensed residential contractor up to $30,000. After a catastrophic storm in an area your insurer has designated, the roofer must give you two cancellation rights, within 72 hours of a claim denial and for any reason within four business days of signing, and the down payment is capped at 50 percent. Since September 2026 a roofer may not pay or rebate your deductible or act as your adjuster.
Vistas Roofing, licensed under CR-42 since 2020, covers residential reroofing, tile roofing, leak repair and commercial work. Altitude Roofing installs metal, asphalt shingle and TPO roofs for homes and businesses, and metal sheds Flagstaff snow well. Northern Arizona Building and Investments does residential and commercial roofing and storm work under a KB-2 general licence. Northern Arizona Roof Services is the only firm here advertising snow guards and heat tape, alongside coatings, foam and single-ply. Among unranked licensed firms, Arizona Metal Roofing LLC is a metal roofing specialist.
| Rule | What applies | Source |
|---|---|---|
| Reroof permit | Required for every reroof; decking over 100 square feet needs a full repair permit and inspection before underlayment | City of Flagstaff building permits |
| Snow load and ice barrier | 60 psf ground snow load; ice barrier underlayment mandatory | Flagstaff City Code 4-03 |
| Roof covering class | Class A or B only; no wood shingles or shakes | Flagstaff amendments to IRC R904 and R905 |
| Contractor licence | R-42 or CR-42 roofing, or a general residential licence; unlicensed contracting is a class 1 misdemeanour | A.R.S. 32-1151; ROC classifications |
| Post-storm cancellation and down payment | Cancel within 72 hours of a claim denial or within four business days of signing; down payment capped at 50 percent | A.R.S. 32-1158.02 |
| Deductible rebate | Banned since September 2026, along with acting as your adjuster | A.R.S. 32-1158.02, SB 1206 |
| 25 percent rule | None found; Arizona has no 25 percent roof rule | A.R.S. 11-861 |
Related guides: roof replacement cost in Arizona; the 25% roofing rule in Arizona 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.
30 inch-plus hail reports and 8 wind reports over Flagstaff
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 Flagstaff, AZ statistical area over ten years, with the dates, the stone sizes and the towns they landed on. Over that decade the metro logged 32 hail reports, 8 severe thunderstorm and high wind reports and 10 tornadoes. Reported property damage from hail, severe wind and tornado over that decade totalled $471,000; flood and winter-storm losses are counted separately and are not included.
The biggest hail to fall on Flagstaff in a decade
| Date | Stone size | Reported near | County |
|---|---|---|---|
| 1 September 2018 | 2.5 in | East Red Lake | Coconino |
| 16 August 2021 | 2.5 in | Walnut Canyon | Coconino |
| 9 August 2018 | 2.0 in | Doney Park | Coconino |
| 11 August 2018 | 1.75 in | West Red Lake | Coconino |
| 18 August 2021 | 1.75 in | North Rim | Coconino |
| 28 September 2021 | 1.75 in | Ryan | Coconino |
The largest stone on record for this metro fell on 1 September 2018 near East Red Lake, measured at 2.5 inches. That is hen-egg sized. Two inches is the threshold at which insurers expect functional damage and full replacement claims.
Wind. The strongest thunderstorm gust logged in the metro was 61 knots, about 70 mph, near Page on 17 July 2023. Asphalt shingles begin lifting at roughly 67 mph when they are correctly nailed, and considerably below that when they are not.
Tornadoes. 10 tornadoes touched down in these counties over the decade, the strongest rated EF1 near Clints Well on 10 July 2021.
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 17 July 2023 event near Page, reproduced verbatim:
Strong winds broke large tree limbs, uprooted trees, blew shingles off structures, and caused power outages for much of the city of Page.
That account is the design case for a roof here, and it comes from the agency that recorded it rather than by a contractor selling the repair.
When it happens. Severe weather reports cluster in August (17), September (10), July (9). The worst years on record were 2018 (11), 2021 (9), 2024 (7). If you are scheduling non-urgent work in Flagstaff, 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 Flagstaff. Weight your decision toward wind rating, ventilation and flashing detail rather than paying extra for impact-rated shingles.
Built for 60 pounds of snow and a burning forest
On 21 February 2019 Flagstaff’s airport recorded 35.9 inches of snow in a single day, its all-time record, and 40.8 inches for the storm; Munds Park took 43 inches. The Weather Service called it one of the most severe winter storms on record for northern Arizona, and the city and county closed non-essential offices. The airport averages 87 inches a year, and a March 2023 storm left 31 inches downtown after more than 30 hours of snow.
That is why Flagstaff’s code sets a 60 psf ground snow load for site-built homes, makes ice barrier underlayment mandatory, and notes that the state’s manufactured home snow standards are not consistent with local conditions. With a winter design temperature of 4 degrees and a 30-inch frost line, an under-ventilated roof here means ice dams, not just higher heating bills.
The forest is the other threat. In April 2022 the Tunnel Fire, 14 miles north-east of the city, burned at least 30 homes over 19,000 acres, and the June 2022 Pipeline Fire burned 26,500 acres on Flagstaff’s northern edge. Then the burn scars turned monsoon rain into floods: in August 2022 the Schultz Creek gauge rose 5 feet in half an hour and several dozen homes in north-west Flagstaff were flooded.
Flagstaff’s code answers the fire with the roof itself: only Class A or B coverings are allowed, and wood shingles and shakes have been deleted from the residential code entirely. The city’s Wildfire Resilient Homes programme offers free assessments and up to $600 toward clearing the first five feet around a house, and its kit includes gutter-cleaning tools and fine vent screening, since embers enter through gutters and vents.
For a Flagstaff homeowner the questions are snow and embers: ask the roofer what ice barrier and ventilation it will install, how it will keep gutters and vents ember-resistant, and confirm the permit covers any decking it replaces, since new decking must be inspected before it is covered.
Flagstaff’s snow and fire rules for a reroof
| Item | Figure or rule | Source |
|---|---|---|
| Record snow day | 35.9 inches, 21 February 2019 | NOAA NCEI, zone AZZ015 |
| Average annual snowfall, airport | 87.2 inches, 1991 to 2020 | NOAA ACIS |
| Ground snow load | 60 psf | Flagstaff City Code 4-03 |
| Ice barrier underlayment | Required | Flagstaff City Code 4-03 |
| Roof covering class | Class A or B only; no wood shingles or shakes | Flagstaff amendments to IRC R904 and R905 |
| Tunnel Fire, April 2022 | At least 30 homes burned; 19,088 acres | NOAA NCEI, zone AZZ015 |
| Reroof permit | Required for every reroof; decking over 100 sq ft needs a full permit | City of Flagstaff building permits |
| Roofing licence | R-42 or CR-42, or a general residential licence | A.R.S. 32-1151; ROC classifications |
| Deductible rebate | Banned since September 2026 | A.R.S. 32-1158.02, SB 1206 |
| Renter-occupied homes, Flagstaff | 57.7% | ACS 2020 to 2024, B25003 |
Source: NWS Flagstaff episode narratives and NOAA NCEI Storm Events Database (Coconino County and zone rows); NOAA ACIS snowfall; A.R.S. 32-1121, 32-1133, 32-1139, 32-1151, 32-1158.02 and 32-1164; Laws 2026 chapter 157; Arizona Registrar of Contractors register and posting list; City of Flagstaff building code, design criteria, permit pages and Wildfire Resilient Homes Initiative; Owens Corning contractor locator; BBB business profiles; US Census Bureau ACS 2020 to 2024.
Three things to confirm before work starts in Flagstaff
Licensing is required in AZ. Arizona requires a Registrar of Contractors licence for contracting work. The main exemptions are an owner-occupier working on their own home and casual or minor work under $1,000 that needs no building permit, the latter lost by anyone who advertises without saying they are not a licensed contractor. Roofing is licensed as R-42, or more often the dual CR-42, and general building licences such as KB-1 and KB-2 also cover it. Contracting without a licence is a class 1 misdemeanour with a minimum fine of $1,000.
The Residential Contractors’ Recovery Fund pays a homeowner’s unpaid judgment against a licensed residential contractor up to $30,000 per claimant and $200,000 per licence (A.R.S. 32-1133 and 32-1139). For post-storm residential roof contracts A.R.S. 32-1158.02 gives two cancellation rights, within 72 hours of the insurer denying the claim and for any reason within four business days of signing, and caps the down payment at 50 percent. Non-emergency work may not start until the insurer approves or denies the claim. Since 12 September 2026, under SB 1206, a post-storm contractor also may not pay, promise to pay or rebate your deductible, may not act as your adjuster, and may not propose a contract while the loss is continuing or emergency services are on scene. These rights apply after a catastrophic storm in an area the insurer has designated, and only to a home the buyer lives in or intends to live in.
Check here: Arizona ROC licence search. The ROC record shows licence status, bond and recent complaint cases; dismissed complaints and older history need a public records request.
For what a full replacement costs across Arizona, including state labor rates and permit rules, see our Arizona 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 shape of the Flagstaff contractor market
4 certified roofing contractors serve the principal cities of the Flagstaff, AZ statistical area, of which 0 hold the top President’s Club tier. The pool carries 274 customer reviews between them at a mean rating of 4.975. The statistical area had a 2024 population of 145,161, a change of 0.04% against the 2020 census base, per the U.S. Census Bureau Vintage 2024 estimates.
How these Flagstaff rankings were produced
Every contractor in the Flagstaff, AZ 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 1 Master Elite, against a metro mean rating of 4.975. The top four were then researched individually against Better Business Bureau records, state licence registers and manufacturer directories. Anything unflattering that research surfaced appears above alongside the rest, and no company bought its position.
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: 2026-10-09. Corrections go to the editor and are actioned on verification.
Flagstaff roofing questions, answered
Who is the best roofer in Flagstaff, AZ?
Vistas Roofing of Flagstaff, AZ scores highest in the Flagstaff metro on The Roofing Brief Contractor Score, at 88.7 out of 100 as of October 2026. It holds Master Elite certification with a 5.0 rating across 127 reviews. Highest-scoring is not the same as best fit for your specific job, and the three companies behind it score within 18.7 points.
What is the 25% rule for roofing in Arizona?
Arizona has no 25 percent roof rule and no statewide residential building code; counties and cities adopt their own codes. No matching requirement was found in Arizona’s unfair claims settlement rule. Ask your city or county building department which code edition applies to your address.
Do I need a permit to replace a roof in Flagstaff?
Yes. Every Flagstaff reroof needs a permit through the over-the-counter form, which asks for the roofer’s state licence and city business licence. Replacing more than 100 square feet of decking moves the job to a full repair permit, and new decking must be inspected before underlayment goes on.
Can I put a wood shake roof on a house in Flagstaff?
No. Flagstaff’s code allows only Class A or B roof coverings and has deleted wood shingles and shakes from its residential code entirely. The rule answers the wildfire risk shown by the 2022 Tunnel Fire, which burned at least 30 homes north of the city.
Who does roof repair in Flagstaff?
Vistas Roofing, the only Master Elite firm in Flagstaff, lists leak repair alongside residential reroofing, tile and commercial roofing. Northern Arizona Roof Services handles coatings, foam and single-ply low-slope roofs and is the only ranked firm advertising snow guards and heat tape.
How many certified roofing contractors serve Flagstaff?
4 contractors on the GAF certification registry serve the principal cities of the Flagstaff, AZ statistical area as of October 2026, of which 0 hold President’s Club status.
How much damaging hail does Flagstaff get?
The Flagstaff, AZ statistical area recorded 30 hail reports of 1 inch or larger and 3 of 2 inches or larger between 2016 and 2025 in the NOAA Storm Events Database. The largest hailstone reported measured 2.5 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 Flagstaff in the last ten years?
The largest hailstone logged by the National Weather Service in the Flagstaff, AZ statistical area between 2016 and 2025 measured 2.5 inches, reported near East Red Lake on 1 September 2018. That is hen-egg sized. Two inches is the threshold at which insurers expect functional damage and full replacement claims. Across the decade the metro recorded 32 hail reports. Reported property damage from hail, severe wind and tornado over that decade totalled $471,000; flood and winter-storm losses are counted separately and are not included.
When is the worst time of year for roof damage in Flagstaff?
Severe-weather reports in the Flagstaff, AZ statistical area cluster in August, September, July, on the NOAA record for 2016 to 2025. Booking non-urgent roof work outside those months usually means shorter lead times, because local crews are not simultaneously triaging storm callouts.
Do roofers need a licence in AZ?
Arizona requires a Registrar of Contractors licence for contracting work. The main exemptions are an owner-occupier working on their own home and casual or minor work under $1,000 that needs no building permit, the latter lost by anyone who advertises without saying they are not a licensed contractor. Roofing is licensed as R-42, or more often the dual CR-42, and general building licences such as KB-1 and KB-2 also cover it. Contracting without a licence is a class 1 misdemeanour with a minimum fine of $1,000. The Residential Contractors’ Recovery Fund pays a homeowner’s unpaid judgment against a licensed residential contractor up to $30,000 per claimant and $200,000 per licence (A.R.S. 32-1133 and 32-1139). For post-storm residential roof contracts A.R.S. 32-1158.02 gives two cancellation rights, within 72 hours of the insurer denying the claim and for any reason within four business days of signing, and caps the down payment at 50 percent. Non-emergency work may not start until the insurer approves or denies the claim. Since 12 September 2026, under SB 1206, a post-storm contractor also may not pay, promise to pay or rebate your deductible, may not act as your adjuster, and may not propose a contract while the loss is continuing or emergency services are on scene. These rights apply after a catastrophic storm in an area the insurer has designated, and only to a home the buyer lives in or intends to live in.
What should I check before hiring a roofer in Flagstaff?
The ROC record shows licence status, bond and recent complaint cases; dismissed complaints and older history need a public records request.
Built for 60 pounds of snow and a burning forest?
On 21 February 2019 Flagstaff’s airport recorded 35.9 inches of snow in a single day, its all-time record, and 40.8 inches for the storm; Munds Park took 43 inches. The Weather Service called it one of the most severe winter storms on record for northern Arizona, and the city and county closed non-essential offices. The airport averages 87 inches a year, and a March 2023 storm left 31 inches downtown after more than 30 hours of snow.
Is Flagstaff a hard market to find a good roofer in?
Flagstaff builds roofs for 60 pounds of snow and a burning forest: its code sets a 60 psf ground snow load, makes ice barrier mandatory and bans wood shingles and shakes, after a February 2019 storm dropped a record 35.9 inches in a day and the 2022 Tunnel Fire burned at least 30 homes north of the city. Hail is a minor threat here. Arizona licenses roofers and every Flagstaff reroof needs a permit. Four certified firms appear in the directory for the area, and all four are ranked.
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 Prescott Valley, AZ, about 57 miles from Flagstaff
- Best roofers in Phoenix, AZ, about 115 miles from Flagstaff
- Best roofers in Lake Havasu City, AZ, about 160 miles from Flagstaff
- Best roofers in St. George, UT, about 170 miles from Flagstaff
- Best roofers in Tucson, AZ, another AZ metro on the same formula
- Best roofers in Yuma, AZ, another AZ metro on the same formula
- Best roofers in Albany, GA, a metro of comparable size
- Best roofers in Lebanon, PA, 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 Flagstaff, AZ: 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.