1,495 roofers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Ontario: Roofing and More, LLC, CR Score 62/100; 4.8★ from 168 Google reviews; open 24/7.
Best for emergencies (open 24/7): Ontario Roofing, posts 24/7 hours; ranked #2 of 1,495.
Most-reviewed: Guyou Roofing and Solar, 1,365 Google reviews at 4.9★, the most of 1,495 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,495 Ontario roofers are ranked here by CR Score, from ten published factors. 360 are open 24/7, 1,029 open Saturdays and 735 open Sundays, based on posted hours. The median Google rating is 5.0★ across 1,495 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Roofing and More, LLC | 62 | 4.8★ (168) | Jurupa Valley, 10 mi away | 24/7 | Overall |
| 2 | Ontario Roofing | 62 | 4.9★ (48) | Ontario | 24/7 | Emergencies |
| 3 | Specialist Roofing & Repair | 62 | 4.9★ (247) | Orange, 22 mi away | 24/7 | — |
| 4 | Green Ladder Roofing and Waterproofing | 61 | 5.0★ (258) | Pasadena, 28 mi away | 24/7 | — |
| 5 | Cali Roofing Solutions | 61 | 5.0★ (87) | Corona, 15 mi away | 24/7 | — |
| 6 | Kaliber Roofing Inc | 61 | 4.8★ (82) | Montclair, 3 mi away | Sat · Sun · Evenings | — |
| 7 | All In Roofing | 61 | 5.0★ (213) | Los Angeles, 31 mi away | 24/7 | — |
| 8 | Guyou Roofing and Solar | 61 | 4.9★ (1,365) | Riverside, 16 mi away | — | Most reviews |
| 9 | Fontana Roofing Experts Pro | 60 | 5.0★ (36) | Fontana, 10 mi away | 24/7 | — |
| 10 | Code 4 Roofing Specialist | 60 | 5.0★ (21) | Claremont, 3 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 168 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ontario
Ranked #2 because of its Google rating and trade focus: 4.9★ from 48 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Orange, 22 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 247 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Pasadena, 28 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 258 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Corona, 15 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 87 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Montclair, 3 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 82 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Los Angeles, 31 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 213 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Riverside, 16 mi away
Ranked #8 because of its Google rating and review volume: 4.9★ from 1,365 Google reviews, the most in Ontario.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fontana, 10 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Claremont, 3 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in South Pasadena, 29 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 176 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in El Monte, 23 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 106 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ontario
Ranked #13 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Irvine, 22 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 119 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ontario
Ranked #15 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “Roofing contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Corona, 8 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Riverside, 18 mi away
Ranked #17 because of its Google rating and trade focus: 4.6★ from 356 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Pasadena, 25 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 229 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Costa Mesa, 28 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 103 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chino, 5 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 100 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Riverside, 17 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Huntington Beach, 31 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 116 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Corona, 12 mi away
Ranked #23 because of its Google rating and trade focus: 4.8★ from 34 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Long Beach, 36 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 705 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ontario
Ranked #25 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 1,495 ranked roofers here; the rest are on their profiles.
20 more roofers within 40 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Affordable Roofing Solutions, Inc | 4.8★ (33) | 19 mi |
| Central Roofing Company Ontario | In Ontario | |
| Cooper Roofing | 4.7★ (12) | 10 mi |
| Custom Homes Roofing Contractor | In Ontario | |
| E Z Seal Construction Inc | 5.0★ (1) | In Ontario |
| Francisco's Roofing Inc. | 4.9★ (92) | 32 mi |
| Garcia's Roofing | In Ontario | |
| Gaxiola Roofing | 4.6★ (11) | 5 mi |
| Horizon Roofing | 4.8★ (59) | 29 mi |
| JE HOME CONSTRUCTION | 5.0★ (2) | In Ontario |
| Karlsson Roofing Co. | In Ontario | |
| Micasa Pro Roofers - Ontario | 3.0★ (2) | In Ontario |
| Moore United Construction | In Ontario | |
| NEMA Roofing | 5.0★ (58) | 29 mi |
| OC Solar | In Ontario | |
| PAGO Roofing | 5.0★ (2) | In Ontario |
| Roof Resources inc | In Ontario | |
| Smart Roofing | In Ontario | |
| Steep Flat Roofing | 5.0★ (93) | 35 mi |
| Wright Brothers Roofing & Construction | 4.8★ (88) | 30 mi |
Typical prices in USD: adjusted for California where a published index exists, national otherwise. Each row names its basis.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Roof replacement | $8,560 | $11,420 | $15,990 | Per project: asphalt shingles on a 1,700 sq ft home (about 2,000 sq ft of roof). US national range × 1.14 Pacific factor (2025 Cost vs. Value Report) | October 2026 |
| Roof repair | $395 | $1,174 | $1,968 | Per repair: typical range of customer-reported jobs. US national range | October 2026 |
In California, Contractors State License Board (CSLB) licenses C-39 Roofing contractor license.
Jobs of $1,000 or more in labor and materials (from January 1, 2025).
No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.
Guide checked October 2026. How we verify licenses
Roofers are busiest from late spring to early fall, so booking in winter usually means shorter waits. After a big storm, get more than one quote and check the license or registration before signing.
We scored 1,495 Ontario roofers on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Ontario data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |