13 roofers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Thunder Bay: Thunder Bay Roofing Ltd., CR Score 89/100; 4.8★ from 29 Google reviews; open 24/7.
Best for emergencies (open 24/7): Matley Roofing, posts 24/7 hours; ranked #5 of 13.
Most-reviewed: Strasser & Lang, 79 Google reviews at 4.8★, the most of 13 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
13 Thunder Bay roofers are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 4 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 4.6★ across 13 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Thunder Bay Roofing Ltd. | 89 | 4.8★ (29) | Thunder Bay | 24/7 | Overall |
| 2 | Reno Bros | 85 | 4.3★ (12) | Thunder Bay | Sat · Sun · Evenings | — |
| 3 | Top Tier Roofing | 85 | 4.6★ (9) | Thunder Bay | — | — |
| 4 | Strasser & Lang | 84 | 4.8★ (79) | Thunder Bay | — | Most reviews |
| 5 | Matley Roofing | 83 | 5.0★ (4) | Thunder Bay | 24/7 | Emergencies |
| 6 | Superior North Roofing Contracting | 80 | 4.9★ (27) | Thunder Bay | — | — |
| 7 | ORION EXTERIOR CONTRACTING | 80 | 3.7★ (3) | Thunder Bay | Sat · Sun | — |
| 8 | Triad Roofing | 79 | 4.5★ (28) | Thunder Bay | — | — |
| 9 | Dykstra Knight Roofing & Renovations | 79 | 4.4★ (32) | Thunder Bay | — | — |
| 10 | MJM Contracting | 77 | 5.0★ (9) | Thunder Bay | — | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and availability: 4.8★ from 29 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Thunder Bay
Ranked #2 because of its Google rating and trade focus: 4.3★ from 12 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Thunder Bay
Ranked #3 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “Roofing contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Thunder Bay
Ranked #4 because of its Google rating and review volume: 4.8★ from 79 Google reviews, the most Google reviews on this list (79).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Thunder Bay
Ranked #5 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Thunder Bay
Ranked #6 because of its Google rating and trade focus: 4.9★ from 27 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Thunder Bay
Ranked #7 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Thunder Bay
Ranked #8 because of its Google rating and trade focus: 4.5★ from 28 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Thunder Bay
Ranked #9 because of its Google rating and trade focus: 4.4★ from 32 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Thunder Bay
Ranked #10 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Thunder Bay
Ranked #11 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Thunder Bay
Ranked #12 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Thunder Bay
Ranked #13 because of its Google rating and trade focus: 3.6★ from 5 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
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 |
|---|---|---|
| AJ's Contracting & Rentals - Thunder Bay Waterproofing Service | 4.9★ (21) | In Thunder Bay |
| Blackbear Roofing | 5.0★ (1) | In Thunder Bay |
| Commercial Roofing Tbay | In Thunder Bay | |
| Contracting Kings Inc | 4.0★ (10) | In Thunder Bay |
| DKI - TIL-KA | 4.7★ (46) | In Thunder Bay |
| Exterior Finishing | 4.1★ (18) | In Thunder Bay |
| Finnway General Contractor Inc | 3.1★ (10) | In Thunder Bay |
| Giorgio Construction Inc | 4.9★ (29) | In Thunder Bay |
| Groundhogs™ | 4.9★ (113) | In Thunder Bay |
| Harper Insulation Inc | 4.8★ (30) | In Thunder Bay |
| Holmes Roofing & Sheet Metal | 5.0★ (1) | In Thunder Bay |
| LH North Ltd. | 5.0★ (7) | In Thunder Bay |
| Nordex Contracting INC. | 5.0★ (9) | In Thunder Bay |
| On Side Restoration Services | 2.8★ (16) | In Thunder Bay |
| Racco Industrial Roofing | 5.0★ (2) | In Thunder Bay |
| SRL Contracting Corp. | 4.9★ (32) | In Thunder Bay |
| Strasser & Lang Ltd | 4.0★ (1) | In Thunder Bay |
| Superior Yard Works | 4.9★ (33) | In Thunder Bay |
| Thunder Bay Renovations | 5.0★ (11) | In Thunder Bay |
| Whitehall Contractors Inc | 5.0★ (2) | In Thunder Bay |
US national ranges converted to CAD, not adjusted for Thunder Bay. 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 |
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.
We scored 13 Thunder Bay 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 Thunder Bay 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 |