Analyzing 8,468,8058.5M ReviewsFor 24,05824.1K Experts
We graded 10 companies on seven things customers actually report: satisfaction, reliability, workmanship, value, momentum, track record and how owners handle complaints.
From 30,781 Google reviews of 90 top-rated roofing contractors nationwide; 10 of them in Westminster, CO. Updated November 5, 2026.
Pick the job — we re-rank companies by how customers rated that exact job.
Experts Score 0–100Experts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown. and a letter grade per factor (A = top 20% of roofing contractors).
| # | Company | ScoreExperts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown. | FactorsFactor grades, in orderSatisfaction (54%): Recency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Reliability (24%): How rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Craft & service (0%): Google review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Value (14%): Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Momentum (0%): Penalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Replies to reviews (7%): How often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.One letter per factor score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = below 20. | ★Google star rating as shown on Google Maps. | Typical billMedian bill customers of this company reported in their reviews (needs 3+ priced reviews). |
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| 1 |  Arrow Roofing and ExteriorsWestminster, CO | A 100How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%100+58.7Reliability 26%99+25.8Value 15%100+15.2Experts Score= 100Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAA– | 5.00 | $10k |
| 2 |  McIntire RoofingWestminster, CO | A 98How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%98+57.5Reliability 26%98+25.6Value 15%100+15.2Experts Score= 98Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAA– | 4.98 | $16k |
| 3 |  Rise RoofingWestminster, CO | A 98How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%98+57.5Reliability 26%97+25.3Value 15%100+15.2Experts Score= 98Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAA– | 4.97 | $2.8k |
| 4 |  AC INC. RoofingWestminster, CO | A 97How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%96+52.4Reliability 24%98+23.8Value 14%100+14.1Replies to reviews 7%100+7.1Experts Score= 97Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.97 | $18k |
| 5 |  Summit West ContractingWestminster, CO | A 97How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%97+56.9Reliability 26%95+24.8Value 15%100+15.2Experts Score= 97Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAA– | 4.97 | $28k |
| 6 |  Ideal Roof & Exterior ProsWestminster, CO | A 96How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%97+56.9Reliability 26%91+23.7Value 15%100+15.2Experts Score= 96Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAA– | 4.98 | $15k |
| 7 |  CCG Roofing and Project ManagementWestminster, CO | A 95How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%97+56.9Reliability 26%96+25Value 15%100+15.2Craft & service penalty79−2.1Experts Score= 95Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AABAA– | 4.97 | — |
| 8 |  Sky Manor Roofing & ExteriorsWestminster, CO | A 94How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%95+51.8Reliability 24%95+23Value 14%100+14.1Replies to reviews 7%67+4.7Experts Score= 94Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAB | 4.96 | $20k |
| 9 |  Best Roof RoofingWestminster, CO | A 93How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%94+51.3Reliability 24%89+21.6Value 14%100+14.1Replies to reviews 7%89+6.3Experts Score= 93Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.96 | $6.2k |
| 10 |  J&K RoofingWestminster, CO | A 88How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%86+46.9Reliability 24%84+20.4Value 14%100+14.1Replies to reviews 7%96+6.8Craft & service penalty95−0.5Experts Score= 88Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.85 | $12k |
What customers paid, from the price Google asks reviewers to report.
| Job | Low25th percentile: 1 in 4 customers paid less than this. | TypicalMedian of the bill customers reported in their Google review (Google asks reviewers for a price range; we use the middle of each range). | High75th percentile: 1 in 4 customers paid more than this. | FairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”. |
|---|---|---|---|---|
| Roof installation | $11k | $16k | $23k | 99% |
| Roof inspection | $438 | $1.7k | $11k | 99% |
| Roof repair for storm & wind damage | $1.7k | $7.9k | $18k | 100% |
| Roof repair | $638 | $2.1k | $8.2k | 99% |
| Roof damage repair | $438 | $1.1k | $2.9k | 99% |
| Gutter installation | $638 | $2.0k | $3.8k | 99% |
| Gutter repairs | $371 | $1.1k | $2.7k | 99% |
| Attic venting | $638 | $2.0k | $5.2k | 100% |
| Skylight repair | $539 | $2.1k | $4.1k | 100% |
| Attic venting repairs | $438 | $1.3k | $2.9k | 100% |
| Roofing | $1.3k | $3.1k | $15k | 100% |
How the 10 roofing contractors we rated in Westminster, CO compare, and what customers praise most.
A = score 80+, F = below 20.
Average stars per company.
Share of Google review highlights.
All price verdicts left with reviews.
Share calling it great / reasonable / overpriced.
Satisfaction (54%) — Recency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.
Reliability (24%) — How rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.
Craft & service (penalty, up to −10) — Google review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.
Value (14%) — Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.
Momentum (penalty, up to −10) — Penalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.
Replies to reviews (7%) — How often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.
The 10 best-rated roofing contractors in Westminster, CO average 5.0★ on Google across 2,269 reviews. Sky Manor Roofing & Exteriors has the top rating (5.0★), and J&K Roofing has the most reviews (506). Updated November 5, 2026.
10 companies that meet our bar: rated 4.5★ or higher on Google, with a meaningful review history (2,269 reviews combined) and currently operating. Request a call back and the company will phone you directly.
“Sky Manor was great. They responded quickly, visited the home and provided a detailed bid, followed through on their pricing and timing and it was a seamless replacement. Pricing was very competitive as well. This…” — Google review
“We needed extensive work, including new sub roof on this project! The work was excellent, professional, and done in a great time frame. Afterward everything was cleaned up and we didn't find a nail or debris…” — Google review
“Dennis showed up on time. Was very helpful and honest in explaining how to complete the repair. I will use him again if ever needed.” — Google review
“James did an excellent job in assessing the hail damage and coordinating repairs. Had some initial issues with painters but James had it taken care of.” — Google review
“Efficient, professional and great workmanship. They did an amazing job from the start to finish and I would definitely recommend them!” — Google review
“I’ve used AC INC Roofing for the roof replacement. Ricky, the project consultant, helped me from the beginning to the end flawlessly. When I was struggling with the insurance claim, he negotiated with the insurance…” — Google review
“I have to hand it to Summit West Contracting. They are the best Contracting company in Colorado!Not only were they the best price in town, but the quality of work I received and the communication of updates and…” — Google review
“CCG Roofing was excellent. This is the second time we've used their services for a roofing project. Their representative was very responsive to my questions, which was greatly appreciated. They completed the job in…” — Google review
“J&K Roofing came highly recommended by someone we trust and we were blown away by Ryan’s knowledge, helpfulness, professionalism and kindness. I came away feeling really grateful we found someone for Roofing and…” — Google review
“We got a new roof from rise after a hail storm. They came out to walk with the insurance company to ensure everything was accounted for. Once approved he asked when we wanted it done. We happened to be leaving town…” — Google review
We scan Google Maps for roofing contractor listings in and around Westminster, keep only open businesses whose main category matches the service, and require a Google rating of at least 4.5 from at least 20 reviews. Companies are ordered by a confidence-weighted score that balances rating and review volume. We do not accept payment for placement.
Sky Manor Roofing & Exteriors has the highest Google rating on our Westminster list: 5.0 out of 5 from 298 reviews (as of November 5, 2026).
J&K Roofing has the most Google reviews among the companies listed here: 506, with a 4.9★ average.
Only open Westminster-area businesses whose Google category matches the service, rated at least 4.5★ from at least 20 Google reviews. They are ordered by a confidence-weighted score of rating and review volume. Placement is never paid.
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Analyzing 8,468,8058.5M ReviewsFor 24,05824.1K Experts