133 roofers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Duncan: PW McCallum Roofing, CR Score 61/100; 4.7★ from 46 Google reviews; open 24/7.
Best for emergencies (open 24/7): Noble Roofing Ltd, posts 24/7 hours; ranked #2 of 133.
Most-reviewed: D&D Clean Exteriors Ltd., 616 Google reviews at 4.9★, the most of 133 ranked; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
133 Duncan roofers are ranked here by CR Score, from ten published factors. 22 are open 24/7, 68 open Saturdays and 44 open Sundays, based on posted hours. The median Google rating is 4.9★ across 133 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | PW McCallum Roofing | 61 | 4.7★ (46) | Salt Spring Island, 13 km away | 24/7 | Overall |
| 2 | Noble Roofing Ltd | 60 | 4.9★ (107) | Victoria, 43 km away | 24/7 | Emergencies |
| 3 | Absolute Roof Solutions | 60 | 4.8★ (275) | Vancouver, 62 km away | 24/7 | — |
| 4 | Cole Roofing Ltd. | 60 | 5.0★ (125) | North Saanich, 26 km away | Sat | — |
| 5 | Vintage Roofing Ltd | 58 | 4.9★ (51) | Victoria, 47 km away | 24/7 | — |
| 6 | Top Pair Roofing | 58 | 5.0★ (7) | North Cowichan, 9 km away | 24/7 | — |
| 7 | Cornerstone Roofing | 58 | 4.9★ (53) | Duncan | — | — |
| 8 | High Definition Roofing Ltd. Duncan | 58 | 4.9★ (56) | Duncan | — | — |
| 9 | Eco Roofing ltd | 58 | 4.9★ (55) | Nanaimo, 54 km away | 24/7 | — |
| 10 | D&D Clean Exteriors Ltd. | 58 | 4.9★ (616) | Nanaimo, 50 km away | — | Most reviews |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 4.7★ from 46 Google reviews, listed on Google as “Roofing contractor”.
Based in Victoria, 43 km away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 107 Google reviews, listed on Google as “Roofing contractor”.
Based in Vancouver, 62 km away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 275 Google reviews, listed on Google as “Roofing contractor”.
Based in North Saanich, 26 km away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 125 Google reviews, listed on Google as “Roofing contractor”.
Based in Victoria, 47 km away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 51 Google reviews, listed on Google as “Roofing contractor”.
Based in North Cowichan, 9 km away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Roofing contractor”.
Based in Duncan
Ranked #7 because of its Google rating and trade focus: 4.9★ from 53 Google reviews, listed on Google as “Roofing contractor”.
Based in Duncan
Ranked #8 because of its Google rating and trade focus: 4.9★ from 56 Google reviews, listed on Google as “Roofing contractor”.
Based in Nanaimo, 54 km away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 55 Google reviews, listed on Google as “Roofing contractor”.
Based in Nanaimo, 50 km away
Ranked #10 because of its Google rating and review volume: 4.9★ from 616 Google reviews, the most in Duncan.
Based in Duncan
Ranked #11 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Roofing contractor”.
Based in Victoria, 40 km away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 26 Google reviews, listed on Google as “Roofing contractor”.
Based in Victoria, 43 km away
Ranked #13 because of its Google rating and review volume: 5.0★ from 124 Google reviews.
Based in Richmond, 58 km away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 75 Google reviews, listed on Google as “Roofing contractor”.
Based in Victoria, 36 km away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Roofing contractor”.
Based in Duncan
Ranked #16 because of its Google rating and trade focus: 2.7★ from 3 Google reviews, listed on Google as “Roofing contractor”.
Based in Nanaimo, 49 km away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 29 Google reviews, listed on Google as “Roofing contractor”.
Based in Salt Spring Island, 16 km away
Ranked #18 because of its Google rating and trade focus: 4.7★ from 13 Google reviews, listed on Google as “Roofing contractor”.
Based in Victoria, 44 km away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 40 Google reviews, listed on Google as “Roofing contractor”.
Based in Nanaimo, 19 km away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Roofing contractor”.
Based in Nanaimo, 49 km away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 21 Google reviews, listed on Google as “Roofing contractor”.
Based in Salt Spring Island, 16 km away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Roofing contractor”.
Based in Nanaimo, 53 km away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 96 Google reviews, listed on Google as “Roofing contractor”.
Based in Sooke, 33 km away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Roofing contractor”.
Based in Victoria, 15 km away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Roofing contractor”.
#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 133 ranked roofers here; the rest are on their profiles.
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 |
|---|---|---|
| All Gone Moss Removal and Roof Cleaning | 3.4★ (5) | 57 km |
| Bayside Roofing Co | In Duncan | |
| Boreas Enterprises | 5.0★ (2) | In Duncan |
| CAPITAL ROOFING | In Duncan | |
| City Wide Roofing Ltd | 5.0★ (14) | 43 km |
| Continental Roofing | 3.8★ (33) | 63 km |
| DELTA ROOFING | 4.3★ (9) | 56 km |
| EcoCrete | 5.0★ (2) | In Duncan |
| Future site of Cowichan District Hospital | 5.0★ (9) | In Duncan |
| G & G Roofing | 2.3★ (3) | 50 km |
| HQ Energy Inc | 5.0★ (30) | 57 km |
| K & S Cleaning Systems & Roof Demossing/Treatments | 5.0★ (2) | In Duncan |
| Lance Vaesen Roofing Ltd | 3.7★ (3) | 46 km |
| Nanaimo Seamless | 4.4★ (13) | 49 km |
| Proline Roofing Ltd. | 4.5★ (98) | 45 km |
| Robert's Roof-Renewals | In Duncan | |
| Shield Roofing | 5.0★ (1) | In Duncan |
| Sierra Roofing | In Duncan | |
| Sunshine Roofing | 4.0★ (8) | 47 km |
| Trafalgar Homes | 4.5★ (20) | In Duncan |
US national ranges converted to CAD, not adjusted for Duncan. 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 |
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 133 Duncan 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 Duncan 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 |