97/100CR Score
Ranked #1 because of its Google rating and availability: 5.0★ from 518 Google reviews, open 24/7.
- 5.0★ from 518 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 47 Fernhill Blvd, Oshawa, ON L1J 5J1
Best Roofers in Oshawa, ON (2026)
552 roofers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Oshawa: Wilson Roofing, CR Score 97/100; 5.0★ from 518 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): C Plus Roofing, posts 24/7 hours; ranked #2 of 552.
- 19
Most-reviewed: Alpine Roofing, 574 Google reviews at 4.5★, the most of 552 ranked; ranked #19.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
552 Oshawa roofers are ranked here by CR Score, from 8 published factors. 141 are open 24/7, 414 open Saturdays and 316 open Sundays, based on posted hours. The median Google rating is 4.9★ across 552 rated businesses.
Top 10 roofers in Oshawa at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Wilson Roofing | 97 | 5.0★ (518) | Oshawa | 24/7 | Overall |
| 2 | C Plus Roofing | 93 | 4.9★ (573) | Markham, 32 km away | 24/7 | Emergencies |
| 3 | Mega City Roofing Inc | 92 | 5.0★ (105) | Ajax, 11 km away | Sat · Sun · Emergency | — |
| 4 | HH renovation & general contracting | 91 | 4.9★ (130) | Ajax, 15 km away | 24/7 | — |
| 5 | Toronto Master Roofing | 91 | 5.0★ (77) | Ajax, 14 km away | 24/7 | — |
| 6 | Metro Roofing | 91 | 4.9★ (98) | Ajax, 16 km away | 24/7 | — |
| 7 | Ajax Roofing Inc | 90 | 5.0★ (38) | Oshawa | 24/7 | — |
| 8 | Over The Top - Roofing & Repairs | 90 | 4.9★ (149) | Oshawa | Sat · Sun · Evenings | — |
| 9 | Fyfe's Roofing | 90 | 4.9★ (31) | Oshawa | 24/7 | — |
| 10 | Longley roofing | 89 | 4.9★ (41) | Cobourg, 13 km away | 24/7 | — |
The 552 best roofers in Oshawa, 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 Markham, 32 km away
93/100CR ScoreRanked #2 because of its Google rating and availability: 4.9★ from 573 Google reviews, open 24/7.
- 4.9★ from 573 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 66 Norbury Dr, Markham, ON L3S 3V2
Based in Ajax, 11 km away
92/100CR ScoreRanked #3 because of its Google rating and availability: 5.0★ from 105 Google reviews, open 7 days a week.
- 5.0★ from 105 Google reviews
- Emergency service
- Hours
- Mon–Sun 8 AM–6 PM
- Address
- 23 Torian Ave, Whitby, ON L1M 1B2
Based in Ajax, 15 km away
91/100CR ScoreRanked #4 because of its Google rating and availability: 4.9★ from 130 Google reviews, open 24/7.
- 4.9★ from 130 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 44 Cragg Crescent, Ajax, ON L1T 0E5
Based in Ajax, 14 km away
91/100CR ScoreRanked #5 because of its Google rating and availability: 5.0★ from 77 Google reviews, open 24/7.
- 5.0★ from 77 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 19 Nimmo Ln, Ajax, ON L1S 0H2
Based in Ajax, 16 km away
91/100CR ScoreRanked #6 because of its Google rating and availability: 4.9★ from 98 Google reviews, open 24/7.
- 4.9★ from 98 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 785 Westney Rd S, Ajax, ON L1S 7G1
Based in Oshawa
90/100CR ScoreRanked #7 because of its Google rating and availability: 5.0★ from 38 Google reviews, open 24/7.
- 5.0★ from 38 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 881 Swiss Height, Oshawa, ON L1S 2C1
Based in Oshawa
90/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 149 Google reviews, listed on Google as “Roofing contractor”.
- 4.9★ from 149 Google reviews
- Hours
- Mon–Sun 8 AM–10 PM
- Address
- 27, 1300 King St E #145, Oshawa, ON L1H 8J4
Based in Oshawa
90/100CR ScoreRanked #9 because of its Google rating and availability: 4.9★ from 31 Google reviews, open 24/7.
- 4.9★ from 31 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 318 Colborne St E, Oshawa, ON L1G 1M5
#10 Longley roofing
Based in Cobourg, 13 km away
89/100CR ScoreRanked #10 because of its Google rating and availability: 4.9★ from 41 Google reviews, open 24/7.
- 4.9★ from 41 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#11 BNS Roofing
Based in North York, 42 km away
89/100CR ScoreRanked #11 because of its Google rating and availability: 4.9★ from 135 Google reviews, open 24/7.
- 4.9★ from 135 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1202 York Mills Rd, North York, ON M3A 1Y1
Based in Markham, 36 km away
89/100CR ScoreRanked #12 because of its Google rating and availability: 4.9★ from 192 Google reviews, open 24/7.
- 4.9★ from 192 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 185 Manhattan Dr, Markham, ON L3P 7S9
Based in Pickering, 20 km away
89/100CR ScoreRanked #13 because of its Google rating and availability: 5.0★ from 40 Google reviews, open 24/7.
- 5.0★ from 40 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1571 Somergrove Crescent, Pickering, ON L1X 2J5
Based in Port Hope, 44 km away
88/100CR ScoreRanked #14 because of its Google rating and availability: 4.9★ from 133 Google reviews, open 24/7.
- 4.9★ from 133 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 45 Sherbourne St, Port Hope, ON L1A 1H3
Based in North York, 55 km away
88/100CR ScoreRanked #15 because of its Google rating and availability: 4.9★ from 212 Google reviews, open 24/7.
- 4.9★ from 212 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 41 Arrowsmith Ave, North York, ON M6M 2W9
Based in Scarborough, 35 km away
88/100CR ScoreRanked #16 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
- 70 Milner Ave unit 06, Scarborough, ON M1S 3P8
Based in Scarborough, 37 km away
88/100CR ScoreRanked #17 because of its Google rating and availability: 5.0★ from 68 Google reviews, open 24/7.
- 5.0★ from 68 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2929 Kennedy Rd, Scarborough, ON M1V 1S9
Based in Oshawa
88/100CR ScoreRanked #18 because of its Google rating and review volume: 4.9★ from 400 Google reviews, 400 Google reviews.
- 4.9★ from 400 Google reviews
- Hours
- Mon–Fri 8 AM–8 PM · Sat–Sun 9 AM–6 PM
- Address
- 1333 Boundary Rd #33, Oshawa, ON L1J 6Z7
#19 Alpine Roofing
Based in Toronto, 48 km away
88/100CR ScoreRanked #19 because of its Google rating and availability: 4.5★ from 574 Google reviews, open 24/7.
- 4.5★ from 574 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 31 Carlaw Ave, Toronto, ON M4M 2R6
Based in Richmond Hill, 45 km away
88/100CR ScoreRanked #20 because of its Google rating and availability: 5.0★ from 81 Google reviews, open 24/7.
- 5.0★ from 81 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 266 Valleymede Dr, Richmond Hill, ON L4B 2C2
Based in Oshawa
88/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 48 Google reviews, listed on Google as “Roofing contractor”.
- 5.0★ from 48 Google reviews
- Hours
- Mon–Sun 6 AM–10 PM
Based in Richmond Hill, 48 km away
88/100CR ScoreRanked #22 because of its Google rating and availability: 5.0★ from 89 Google reviews, open 24/7.
- 5.0★ from 89 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11611 Yonge St, Richmond Hill, ON L4E 1G4
Based in Burlington, 54 km away
88/100CR ScoreRanked #23 because of its Google rating and availability: 4.8★ from 224 Google reviews, open 24/7.
- 4.8★ from 224 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Ajax, 10 km away
87/100CR ScoreRanked #24 because of its Google rating and availability: 5.0★ from 17 Google reviews, open 24/7.
- 5.0★ from 17 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 18 Icemaker Wy, Whitby, ON L1P 0L5
Based in Toronto, 55 km away
87/100CR ScoreRanked #25 because of its Google rating and availability: 4.9★ from 143 Google reviews, open 24/7.
- 4.9★ from 143 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 582 Lansdowne Ave, Toronto, ON M6H 3Y6
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 552 ranked roofers here; the rest are on their profiles.
Also serving Oshawa
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 |
|---|---|---|
| 2 Dads Waterproofing Inc. | 5.0★ (4) | In Oshawa |
| Advance custom roofing | 5.0★ (6) | 14 km |
| Andy Crown Construction Co. | 1.8★ (4) | In Oshawa |
| Aquatech Basement Waterproofing Oshawa | 5.0★ (49) | In Oshawa |
| Ashpark Basement Waterproofing Contractors | 5.0★ (9) | In Oshawa |
| Boss Roofing | 3.7★ (12) | 7 km |
| Burton Roofing | 1.5★ (2) | In Oshawa |
| Dynasty Roofing Inc | 5.0★ (21) | 27 km |
| Gencan Commercial Flat Roofing Ontario | 4.7★ (19) | 31 km |
| Genesis Roofing & Contracting | 4.5★ (78) | 48 km |
| Henley Contracting Ltd. | 4.8★ (50) | In Oshawa |
| INTERLINK ROOFING | 5.0★ (26) | 36 km |
| JJ McGuire General Contractors | 4.2★ (13) | In Oshawa |
| Maurice Roofing Ltd | 3.0★ (2) | In Oshawa |
| Phil's Contracting / Building & Renovations | 3.0★ (2) | In Oshawa |
| Pristine Contracting Inc. | 5.0★ (24) | In Oshawa |
| Superior Solutions Contracting | 4.9★ (37) | In Oshawa |
| Trough Doctor Eavestrough | 4.0★ (3) | In Oshawa |
| Ultra Roofing | 4.2★ (21) | 15 km |
| Urbantop roofing | 4.7★ (12) | 13 km |
How much do roofers cost in Oshawa?
US national ranges converted to CAD, not adjusted for Oshawa. 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 Oshawa roofers
We scored 552 Oshawa 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 Oshawa 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 Oshawa: frequently asked questions
Who is the best roofer in Oshawa?
By CR Score, the highest-ranked roofer in Oshawa, ON is Wilson Roofing with a CR Score of 97/100. It has 5.0★ from 518 Google reviews. It is open 24/7. C Plus Roofing (#2) and Mega City Roofing Inc (#3) follow. We ranked 552 roofers on 8 factors, last updated October 22, 2026.
How many roofers are there in Oshawa?
ContractorsRanked ranks 552 roofers serving Oshawa, ON. 10 of them are based in Oshawa; 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 Oshawa are open 24/7?
141 ranked roofers in Oshawa post 24/7 hours. The highest-ranked are Wilson Roofing (#1), C Plus Roofing (#2) and HH renovation & general contracting (#4). Mega City Roofing Inc (#3) also lists emergency service. Hours come from each business's Google listing as of October 2026, so call to confirm.
Which roofers in Oshawa work on weekends?
414 of 552 ranked roofers post Saturday hours and 316 post Sunday hours. The highest-ranked open Saturdays are Wilson Roofing (#1), C Plus Roofing (#2) and Mega City Roofing Inc (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does roof replacement cost in Oshawa?
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 Oshawa. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Oshawa roofers have?
The median Google rating among 552 rated roofers in Oshawa is 4.9★, with a median of 19 reviews. Alpine Roofing has the most, 574 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 Oshawa?
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 Oshawa
- October 2026: CR Scores recalculated for 552 roofers serving Oshawa.
More roofers and Oshawa pages
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