133 roofers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in London: Aok Roofing Inc., CR Score 65/100; 4.9★ from 230 Google reviews; open 24/7.
Best for emergencies (open 24/7): Southwinds Roofing, posts 24/7 hours; ranked #4 of 133.
Most-reviewed: London Eco Metal Manufacturing - Metal Roofing, 377 Google reviews at 4.7★, the most of 133 ranked; ranked #13.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
133 London roofers are ranked here by CR Score, from ten published factors. 21 are open 24/7, 65 open Saturdays and 41 open Sundays, based on posted hours. The median Google rating is 4.8★ across 133 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Aok Roofing Inc. | 65 | 4.9★ (230) | London | 24/7 | Overall |
| 2 | Advanced Level Homes - Roofing & Exteriors | 65 | 5.0★ (133) | London | Sat · Sun · Evenings | — |
| 3 | Shockwave Roofing | 64 | 5.0★ (96) | London | Sat · Sun | — |
| 4 | Southwinds Roofing | 64 | 4.7★ (71) | London | 24/7 | Emergencies |
| 5 | North London Roofing | 63 | 4.5★ (98) | London | 24/7 | — |
| 6 | Armour Shield Roofing London | 63 | 4.9★ (131) | London | Sat | — |
| 7 | Humble Roofing & Renovations inc. | 62 | 4.7★ (77) | London | Sat · Sun · Evenings | — |
| 8 | Green Metal Roofing And Manufacturing Inc. | 61 | 4.8★ (227) | London | — | — |
| 9 | Legacy Flat Roofing & Sheet Metal (CALL US HERE) | 61 | 4.8★ (73) | London | Sat | — |
| 10 | Meg Sim Roofing Inc. | 61 | 5.0★ (65) | London | Sat | — |
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: 4.9★ from 230 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #2 because of its Google rating and trade focus: 5.0★ from 133 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #3 because of its Google rating and trade focus: 5.0★ from 96 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #4 because of its Google rating and trade focus: 4.7★ from 71 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #5 because of its Google rating and trade focus: 4.5★ from 98 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #6 because of its Google rating and trade focus: 4.9★ from 131 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #7 because of its Google rating and trade focus: 4.7★ from 77 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #8 because of its Google rating and trade focus: 4.8★ from 227 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #9 because of its Google rating and trade focus: 4.8★ from 73 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #10 because of its Google rating and trade focus: 5.0★ from 65 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #11 because of its Google rating and trade focus: 4.6★ from 19 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #12 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dorchester, 11 km away
Ranked #13 because of its Google rating and review volume: 4.7★ from 377 Google reviews, the most in London.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #14 because of its Google rating and trade focus: 5.0★ from 53 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #15 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #16 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #17 because of its Google rating and trade focus: 4.7★ from 35 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #18 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Roofing contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Norfolk County, 20 km away
Ranked #19 because of its Google rating and trade focus: 4.6★ from 48 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #20 because of its Google rating and trade focus: 4.9★ from 12 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #21 because of its Google rating and trade focus: 4.6★ from 14 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #22 because of its Google rating and trade focus: 4.8★ from 61 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #23 because of its Google rating and trade focus: 4.7★ from 12 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #24 because of its Google rating and trade focus: 4.9★ from 99 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London
Ranked #25 because of its Google rating and trade focus: 4.4★ from 34 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 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 |
|---|---|---|
| 1 | 5.0★ (2) | In London |
| 519 Roofing | 4.9★ (42) | In London |
| Absolute Metal Roofing | 5.0★ (1) | In London |
| AM Group Exteriors - London | 4.0★ (254) | In London |
| Aok Roofing | 3.0★ (2) | In London |
| Atlas-Apex Roofing Inc. | 5.0★ (2) | In London |
| B&T Roofing and Siding | 2.0★ (1) | In London |
| empcontracting.ca Inc. | 5.0★ (1) | In London |
| G & N Roofing & Snowplowing | 4.0★ (4) | 48 km |
| Glavin Eavestroughing Ltd | 5.0★ (11) | 38 km |
| Hermanos Roofing | 2.3★ (6) | 54 km |
| Highlander Roofing Ltd | 3.5★ (4) | 47 km |
| King Quality Roofing | 4.0★ (4) | In London |
| Kings Roofing | 5.0★ (1) | In London |
| London Eavestrough and Siding | 4.9★ (380) | In London |
| Malek Roofing Inc | 3.0★ (2) | In London |
| Professional Choice Renovations | 3.7★ (3) | 49 km |
| RCC Waterproofing London | 4.5★ (20) | In London |
| Shamas Contracting Inc | 4.4★ (19) | In London |
| SouthWest Exteriors Canada | 5.0★ (17) | In London |
US national ranges converted to CAD, not adjusted for London. 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 133 London 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 London 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 |