92/100CR Score
Ranked #1 because of its Google rating and availability: 4.8★ from 343 Google reviews, open 24/7.
- 4.8★ from 343 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2275 RR 20 Unit 23, Welland, ON L3B 5N5
Best Roofers in Port Colborne, ON (2026)
328 roofers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Port Colborne: Niagara RoofMasters, CR Score 92/100; 4.8★ from 343 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Buffalo's Best Roofing Company LLC, posts 24/7 hours; ranked #2 of 328.
- 19
Most-reviewed: Gerry's Roofing & Siding Inc, 766 Google reviews at 4.8★, the most of 328 ranked; ranked #19.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
328 Port Colborne roofers are ranked here by CR Score, from 8 published factors. 59 are open 24/7, 180 open Saturdays and 97 open Sundays, based on posted hours. The median Google rating is 4.8★ across 328 rated businesses.
Top 10 roofers in Port Colborne at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Niagara RoofMasters | 92 | 4.8★ (343) | Welland, 18 km away | 24/7 | Overall |
| 2 | Buffalo's Best Roofing Company LLC | 91 | 4.9★ (576) | Cheektowaga, 42 km away | 24/7 | Emergencies |
| 3 | King Remodeling Corp roofing contractor | 90 | 5.0★ (177) | Buffalo, 32 km away | 24/7 | — |
| 4 | OConnor Contracting | 90 | 4.9★ (268) | Buffalo, 37 km away | 24/7 | — |
| 5 | AJT Roofing and Contracting | 90 | 4.9★ (190) | St. Catharines, 32 km away | 24/7 | — |
| 6 | Buffalo Roofing | 89 | 4.8★ (379) | Williamsville, 45 km away | 24/7 | — |
| 7 | ROOF WIZARD INC | 89 | 5.0★ (79) | Niagara Falls, 24 km away | 24/7 | — |
| 8 | Graves Brothers Home Improvement | 89 | 4.7★ (494) | Williamsville, 44 km away | 24/7 | — |
| 9 | DSS Roofing | 89 | 5.0★ (87) | Buffalo, 32 km away | 24/7 | — |
| 10 | Green Peaks Roofing | 89 | 5.0★ (161) | Hamilton, 49 km away | 24/7 | — |
The 328 best roofers in Port Colborne, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Cheektowaga, 42 km away
91/100CR ScoreRanked #2 because of its Google rating and availability: 4.9★ from 576 Google reviews, open 24/7.
- 4.9★ from 576 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4589 Genesee St, Cheektowaga, NY 14225, United States
Based in Buffalo, 32 km away
90/100CR ScoreRanked #3 because of its Google rating and availability: 5.0★ from 177 Google reviews, open 24/7.
- 5.0★ from 177 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 48 Kenova St, Buffalo, NY 14214, United States
Based in Buffalo, 37 km away
90/100CR ScoreRanked #4 because of its Google rating and availability: 4.9★ from 268 Google reviews, open 24/7.
- 4.9★ from 268 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 106 Hubbardston Pl, Buffalo, NY 14228, United States
Based in St. Catharines, 32 km away
90/100CR ScoreRanked #5 because of its Google rating and availability: 4.9★ from 190 Google reviews, open 24/7.
- 4.9★ from 190 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 38 Adel Dr, St. Catharines, ON L2M 7E4
Based in Williamsville, 45 km away
89/100CR ScoreRanked #6 because of its Google rating and availability: 4.8★ from 379 Google reviews, open 24/7.
- 4.8★ from 379 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5565 Transit Rd, Williamsville, NY 14221
Based in Niagara Falls, 24 km away
89/100CR ScoreRanked #7 because of its Google rating and availability: 5.0★ from 79 Google reviews, open 24/7.
- 5.0★ from 79 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5935 Prospect St, Niagara Falls, ON L2G 1G9
Based in Williamsville, 44 km away
89/100CR ScoreRanked #8 because of its Google rating and availability: 4.7★ from 494 Google reviews, open 24/7.
- 4.7★ from 494 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6814 Main St Suite 104, Williamsville, NY 14221
#9 DSS Roofing
Based in Buffalo, 32 km away
89/100CR ScoreRanked #9 because of its Google rating and availability: 5.0★ from 87 Google reviews, open 24/7.
- 5.0★ from 87 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 127 Hiler Ave, Buffalo, NY 14217, United States
Based in Hamilton, 49 km away
89/100CR ScoreRanked #10 because of its Google rating and availability: 5.0★ from 161 Google reviews, open 24/7.
- 5.0★ from 161 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4024 Woodburn Rd, Hamilton, ON L0R 1C0
Based in Buffalo, 31 km away
89/100CR ScoreRanked #11 because of its Google rating and availability: 4.8★ from 129 Google reviews, open 24/7.
- 4.8★ from 129 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 237 Pratt St, Buffalo, NY 14204, United States
Based in Buffalo, 27 km away
88/100CR ScoreRanked #12 because of its Google rating and availability: 4.6★ from 123 Google reviews, open 24/7.
- 4.6★ from 123 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2064 Niagara St, Buffalo, NY 14207, United States
#13 JP Construction
Based in North Tonawanda, 37 km away
87/100CR ScoreRanked #13 because of its Google rating and availability: 4.9★ from 80 Google reviews, open 24/7.
- 4.9★ from 80 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3967 Niagara Falls Blvd, North Tonawanda, NY 14120, United States
Based in St. Catharines, 29 km away
87/100CR ScoreRanked #14 because of its Google rating and availability: 4.8★ from 73 Google reviews, open 24/7.
- 4.8★ from 73 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 110 James St Suite 200, St. Catharines, ON L2R 7E8
Based in Buffalo, 38 km away
87/100CR ScoreRanked #15 because of its Google rating and availability: 4.9★ from 84 Google reviews, open 24/7.
- 4.9★ from 84 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 125 Summit Ave, Orchard Park, NY 14127
Based in Niagara Falls, 27 km away
87/100CR ScoreRanked #16 because of its Google rating and availability: 4.8★ from 50 Google reviews, open 24/7.
- 4.8★ from 50 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4551 Zimmerman Ave, Niagara Falls, ON L2E 3M5
Based in Niagara Falls, 23 km away
87/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 104 Google reviews, listed on Google as “Roofing contractor”.
- 5.0★ from 104 Google reviews
- Hours
- Mon–Sun 7 AM–9 PM
- Address
- 6613 Erwin Crescent, Niagara Falls, ON L2G 4Z8
Based in Welland, 11 km away
86/100CR ScoreRanked #18 because of its Google rating and availability: 5.0★ from 64 Google reviews, open 24/7.
- 5.0★ from 64 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 31 Lisa Ct, Welland, ON L3C 6A2
Based in Hamilton, 59 km away
86/100CR ScoreRanked #19 because of its Google rating and review volume: 4.8★ from 766 Google reviews, the most Google reviews on this list (766).
- 4.8★ from 766 Google reviews
- Hours
- Mon–Thu 7 AM–9 PM · Fri 7 AM–7 PM · Sat 10 AM–6 PM · Sun 9 AM–6 PM
- Address
- 49 Morley St, Hamilton, ON L8H 3R6
Based in Hamburg, 37 km away
86/100CR ScoreRanked #20 because of its Google rating and availability: 5.0★ from 36 Google reviews, open 24/7.
- 5.0★ from 36 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5690 Camp Rd, Hamburg, NY 14075
#21 Faber Roofing
Based in Welland, 11 km away
86/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 53 Google reviews, listed on Google as “Roofing contractor”.
- 4.9★ from 53 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 41 Linwood Dr, Welland, ON L3C 2B5
Based in West Seneca, 40 km away
86/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 173 Google reviews, listed on Google as “Roofing contractor”.
- 4.9★ from 173 Google reviews
- Hours
- Mon–Sun 8 AM–7 PM
- Address
- 1711 Union Rd Suite 54, West Seneca, NY 14224, United States
Based in Buffalo, 27 km away
86/100CR ScoreRanked #23 because of its Google rating and availability: 5.0★ from 21 Google reviews, open 24/7.
- 5.0★ from 21 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7 Austin St, Buffalo, NY 14207, United States
#24 Erie Home
Based in Buffalo, 43 km away
85/100CR ScoreRanked #24 because of its Google rating and availability: 4.7★ from 67 Google reviews, open 24/7.
- 4.7★ from 67 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4950 Genesee St, Buffalo, NY 14225
#25 TS Metal Roofing
Based in Port Colborne
85/100CR ScoreRanked #25 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
- 5.0★ from 5 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 437 Sugarloaf St, Port Colborne, ON L3K 2P3
Roofers ranked #26 to #50
#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 328 ranked roofers here; the rest are on their profiles.
Also serving Port Colborne
20 more roofers within 64 km that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| AAA Roofing Painting and More | 5.0★ (4) | 35 km |
| Ace 1 Quality Roofing | Siding Eavestroughs, Roofing- Pelham | In Port Colborne | |
| Andy's Roofing & Home Improvement | 5.0★ (2) | In Port Colborne |
| BB’s Regional Roofing and Siding CO. | 4.9★ (13) | 11 km |
| Blampin Roof Tops | 4.8★ (22) | 31 km |
| Buffalo Ice Dam Steaming and Roof Snow Removal | 5.0★ (7) | 42 km |
| Carroll's Roofing Co | 4.3★ (12) | 28 km |
| Duffy Roofing | In Port Colborne | |
| Expert Buffalo Roofing | 3.0★ (6) | 35 km |
| Frank + Co. Construction Ltd. | 5.0★ (8) | In Port Colborne |
| G. Snow's Roofing & Sheet Metal Ltd. | 1.0★ (2) | 14 km |
| JP Construction Roofing & siding Co. | 4.1★ (12) | 52 km |
| Overbeeke Customs Inc. | 5.0★ (9) | In Port Colborne |
| PC Roofing | 5.0★ (2) | 9 km |
| Pro Desk at RONA | 4.5★ (2) | 13 km |
| RCJ Roofing | 5.0★ (1) | In Port Colborne |
| Roofmasters Roofing Co., Inc. | 3.4★ (5) | 28 km |
| Serban Foundation Solutions | 4.7★ (28) | In Port Colborne |
| Severa Roofing & Home Renovations | 1.0★ (1) | In Port Colborne |
| Theriault Forming Construction Ltd. | 5.0★ (1) | In Port Colborne |
How much do roofers cost in Port Colborne?
US national ranges converted to CAD, not adjusted for Port Colborne. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Roof replacement | CA$10,540 | CA$14,050 | CA$19,680 | Per project: asphalt shingles on a 1,700 sq ft home (about 2,000 sq ft of roof). US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
| Roof repair | CA$560 | CA$1,650 | CA$2,770 | Per repair: typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
When to hire a roofer in Ontario
In Ontario, roofers are busiest from late spring to early fall, when shingles can be installed in mild, dry weather. After a big storm, get more than one quote and check the license or registration before signing.
How we ranked Port Colborne roofers
We scored 328 Port Colborne roofers on 8 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. Unknown factors are left out of the score, 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 Port Colborne data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
Roofers in Port Colborne: frequently asked questions
Who is the best roofer in Port Colborne?
By CR Score, the highest-ranked roofer in Port Colborne, ON is Niagara RoofMasters with a CR Score of 92/100. It has 4.8★ from 343 Google reviews. It is open 24/7. Buffalo's Best Roofing Company LLC (#2) and King Remodeling Corp roofing contractor (#3) follow. We ranked 328 roofers on 8 factors, last updated October 22, 2026.
How many roofers are there in Port Colborne?
ContractorsRanked ranks 328 roofers serving Port Colborne, ON. 5 of them are based in Port Colborne; the rest serve it from nearby towns. Another 20 within 64 km are listed but not ranked yet. Counts are as of October 2026.
Which roofers in Port Colborne are open 24/7?
59 ranked roofers in Port Colborne post 24/7 hours. The highest-ranked are Niagara RoofMasters (#1), Buffalo's Best Roofing Company LLC (#2) and King Remodeling Corp roofing contractor (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which roofers in Port Colborne work on weekends?
180 of 328 ranked roofers post Saturday hours and 97 post Sunday hours. The highest-ranked open Saturdays are Niagara RoofMasters (#1), Buffalo's Best Roofing Company LLC (#2) and King Remodeling Corp roofing contractor (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does roof replacement cost in Port Colborne?
Roof replacement typically costs CA$10,540 to CA$19,680, with CA$14,050 typical (Per project: asphalt shingles on a 1,700 sq ft home (about 2,000 sq ft of roof). US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)). This is a national range, not adjusted for Port Colborne. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Port Colborne roofers have?
The median Google rating among 328 rated roofers in Port Colborne is 4.8★, with a median of 19 reviews. Gerry's Roofing & Siding Inc has the most, 766 reviews, and ranks #19. We adjust ratings for review count, so a few five-star reviews cannot top the list.
When is the best time to hire a roofer in Port Colborne?
In Ontario, roofers are busiest from late spring to early fall, when shingles can be installed in mild, dry weather. After a big storm, get more than one quote and check the license or registration before signing.
How does ContractorsRanked rank roofers?
Each roofer gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Port Colborne
- October 2026: CR Scores recalculated for 328 roofers serving Port Colborne.
- October 2026: 1 duplicate listing merged.
More roofers and Port Colborne pages
Roofers near Port Colborne
- Roofers in Welland, ON407 ranked
- Roofers in Thorold, ON545 ranked
- Roofers in Fort Erie, ON282 ranked
- Roofers in Niagara Falls, ON348 ranked
- Roofers in St. Catharines, ON695 ranked
- Roofers in Binbrook, ON566 ranked
- Roofers in Hamilton, ON753 ranked
- Roofers in Ancaster, ON618 ranked
- Roofers in Oakville, ON943 ranked
- Roofers in Burlington, ON864 ranked
Other trades in Port Colborne
- Plumbers in Port Colborne173 ranked
- Electricians in Port Colborne197 ranked
- HVAC contractors in Port Colborne249 ranked
- General contractors in Port Colborne282 ranked
- Painters in Port Colborne60 ranked
- Landscapers in Port Colborne54 ranked
- Handymen in Port Colborne29 ranked
- Kitchen remodelers in Port Colborne150 ranked
- Bathroom remodelers in Port Colborne154 ranked
- Flooring contractors in Port Colborne109 ranked
- Tile installers in Port Colborne14 ranked
- Drywall contractors in Port Colborne9 ranked
- Concrete contractors in Port Colborne155 ranked
- Fence contractors in Port Colborne85 ranked
- Deck builders in Port Colborne80 ranked
- Siding contractors in Port Colborne200 ranked
- Window installers in Port Colborne202 ranked
- Gutter installers in Port Colborne104 ranked
- Insulation contractors in Port Colborne36 ranked
- Solar installers in Port Colborne18 ranked
- Garage door repair companies in Port Colborne34 ranked
- Foundation repair companies in Port Colborne60 ranked
- Tree services in Port Colborne112 ranked
- Masonry contractors in Port Colborne53 ranked
- Water damage restoration companies in Port Colborne136 ranked
- Home builders in Port Colborne177 ranked
- Demolition contractors in Port Colborne39 ranked
- All contractors in Port Colborne