Best chimney services in Ontario
This list ranks Ontario specialists whose review history repeatedly calls out chimney flashing repair, chimney-related leak diagnosis, and re-flashing work, not general contractors who happen to mention it once. Ranking follows our methodology, an earned composite built from rating, review volume, recency, sentiment and verification, last refreshed 2026-09-25.
For shingle replacement, flat roofs and siding rather than chimney-specific work, see the best roofing contractor overall list. The businesses below earn their place here because reviewers specifically credit them with chimney flashing, chimney leak tracing, or chimney-adjacent repair work.
Picks are ranked by score and relevance to chimney services, so a lower overall score can rank higher here.
At a glance
| # | Business | Score | Rating | From | Best for |
|---|---|---|---|---|---|
| 1 | BNS Roofing | 93 | 5 (165) | — | Honest chimney leak diagnosis |
| 2 | Universal Roofs Toronto | 93 | 5 (141) | — | Root-cause leak tracing |
| 3 | Luso Roofing & Contracting Inc. | North York | 93 | 4.9 (251) | — | Emergency flashing response |
| 4 | Bros. Roofing | 92 | 5 (118) | — | Certified flashing & shingle repair |
| 5 | Impressed Roofing | 91 | 5 (115) | — | One-day emergency fixes |
| 6 | Outstanding roofing | 91 | 5 (103) | — | Insurance-backed leak repair |
| 7 | Pro Alliance Roofing | 89 | 5 (70) | — | Chimney leak root-cause fixes |
| 8 | Top's Roofing Company | 87 | 4.8 (78) | — | Long-standing warranty honour |
| 9 | Roofing Repairs Company | 86 | 4.9 (44) | — | Fast chimney flashing repair |
| 10 | The Roof Whisperer of Hamilton | 85 | 5 (77) | — | Chimney work & waterproofing |
| 11 | Trusted Roofers Toronto | 84 | 4.9 (54) | — | Warrantied exterior & flashing work |
| 12 | The Roof Whisperer of Mississauga - Roof Repair & Skylight Contractor | 83 | 4.9 (65) | — | Storm-damage flashing repair |
| 13 | Keen Roofing - Mississauga | 83 | 5 (47) | — | Same-day storm & leak fixes |
| 14 | The Roof Whisperer of Burlington - Roof Repair & Skylight Contractor | 82 | 5 (44) | — | Clean, precise leak patching |
| 15 | The Roof Whisperer of Etobicoke | 82 | 5 (42) | — | Slate & cedar flashing matching |
1. BNS Roofing
5 (165 reviews)score 93/100
Silvi and Keno's crew get named repeatedly for tracing a leak to its real source and telling homeowners plainly whether a patch or a full fix is needed, rather than steering toward the bigger job. A perfect 5.0 across 165 reviews and near-full sub-scores on rating, recency and completeness back that up.
- Honest advice on repair vs. replacement, no pressure sales
- Fast leak diagnosis with same-day repairs
- Transparent pricing that matches the original quote
- Named techs (Silvi, Keno) praised job after job
Google-verified165 Google reviewssince 2010
Services: roof inspection maintenance, roofing contractor, roof replacement installation, siding contractor
2. Universal Roofs Toronto
5 (141 reviews)score 93/100
Oltion's team is known for chasing a leak back to its actual origin point instead of patching the obvious spot, which matters when chimney flashing failures show up as stains well away from the chimney itself. Job photos get sent to customers as documentation, and the 5.0 average holds across 141 reviews.
- Diagnoses hidden leak sources instead of surface patches
- Owner Oltion personally supervises larger jobs
- Uses certified flat-roof and skylight materials
- Photo documentation sent with every job
Google-verified141 Google reviewsSince 2005
Services: roof inspection maintenance, roofing contractor, roof replacement installation, siding contractor
3. Luso Roofing & Contracting Inc. | North York
4.9 (251 reviews)score 93/100
Nuno's crew answers emergency calls same day or the next morning, and one reviewer described him climbing a 40-foot ladder to photograph the problem area before ever quoting a price. That kind of hands-on inspection is exactly what a failing chimney flashing joint needs, and it shows in a 4.9 average across 251 reviews, the highest review count on this list.
- Same-day or next-morning emergency response
- Photo diagnostics before any quote is given
- Recommends repair over replacement when justified
- Follow-up guarantee if a repaired leak recurs
Google-verified251 Google reviews["more than 30 years of experience"]
Services: roof inspection maintenance, roofing contractor, roof replacement installation, siding contractor
4. Bros. Roofing
5 (118 reviews)score 92/100
Kevin's team pairs flashing and small-leak fixes with certified CertainTeed installations and manufacturer-backed warranty coverage, and reviewers say he'll take on a minor flashing repair with the same attention as a full tear-off. Before-and-after photos and same-day quotes come up often across 118 five-star reviews.
- Same-day or next-day response and quoting
- Fair pricing without unnecessary upselling
- Certified installers with manufacturer warranty
- Photo documentation and thorough site cleanup
Google-verified118 Google reviews
Services: residential roofing, roof repair, roof inspection maintenance, roofing contractor
5. Impressed Roofing
5 (115 reviews)score 91/100
Ryne works alongside his crew on site and reviewers point to jobs, including emergency leak and skylight damage repairs, finishing inside a single day with guaranteed workmanship after. Over a decade in business with a 5.0 average across 115 reviews suggests this isn't a fluke.
- Owner Ryne on site with the crew
- Most repair jobs completed in one day
- Guaranteed workmanship on completed work
- No pressure to oversell beyond the actual problem
Google-verified115 Google reviewsover a decade, since 2015
Services: roof replacement installation, siding contractor, roof repair, sheet metal contractor
6. Outstanding roofing
5 (103 reviews)score 91/100
Peter, Drieu and Mike show up fast and pair flashing, vent and fascia repairs with insurance claim support and before-and-after photos, useful when chimney flashing damage needs to be documented for a claim. Nothing but praise across 103 reviews for honesty and cleanup.
- Honest, no-pressure approach to what actually needs fixing
- Rapid response and same-day problem-solving
- Thorough site cleanup after every job
- Insurance claim documentation and support
Google-verified103 Google reviewsmore than 20 years
Services: roof replacement installation, siding contractor, skylight contractor, roof repair
7. Pro Alliance Roofing
5 (70 reviews)score 89/100
Mattheu and Kevin get singled out for chasing chimney leaks and attic ventilation problems back to their actual cause rather than stopping at the visible symptom, and every stage gets photographed and filmed. A five-year workmanship warranty and a spotless 5.0 across 70 reviews back the approach, though the smaller review count than the top names is worth noting.
- Root-cause diagnosis of chimney leaks and ventilation issues
- Every job photographed and videoed step by step
- Five-year workmanship warranty included
- Fair pricing with transparent estimates from $200
Google-verified70 Google reviews
Services: roof repair, roofing contractor, siding contractor, skylight contractor
8. Top's Roofing Company
4.8 (78 reviews)score 87/100
Brian's crew has sealed skylights and flashing they didn't originally install and still honored decade-old workmanship warranties without a fight, which says something about how they'll treat chimney flashing repairs down the line. Next-day response is the norm across 78 reviews at a 4.8 average.
- Honors workmanship warranties a decade or more old
- Next-day response time as the standard
- Fair pricing with no hidden costs
- Complete site clean-up after every job
Watch out: Slightly lower rating sub-score than the top names, though sentiment stays strongly positive.
Google-verified78 Google reviewsSince 1987
Services: flat roofing, roof replacement installation, roof repair, residential roofing
9. Roofing Repairs Company
4.9 (44 reviews)score 86/100
Chimney flashing repair sits explicitly among Jimmy and his brother Ed's listed services, and reviewers describe response times inside 30 minutes to an hour along with one case where they found a $500 fix where another contractor quoted $5,000. The review base is smaller at 44, but the 4.9 average and consistent praise for honesty carry weight.
- Emergency response within 30 minutes to an hour
- Found repairs far cheaper than other quotes
- Honest diagnostics backed by before-and-after photos
- Named technicians Jimmy and Ed on every job
Watch out: Fewer reviews than the top-ranked names, so the track record is thinner though consistently strong.
Google-verified44 Google reviewssince 1990
Services: roof inspection maintenance, roofing contractor, roof replacement installation, siding contractor
10. The Roof Whisperer of Hamilton
5 (77 reviews)score 85/100
Chimney work sits alongside vent sealing and waterproofing in the services customers describe, with Claude coming up repeatedly as the installer who walks people through what's happening step by step. Every recent review lands at five stars across a 77-review base.
- Fair pricing on repairs and inspections
- Explains the job clearly as work happens
- Same-day evaluation and repair available
- Punctual arrival with first-time fixes
Google-verified77 Google reviews
Services: roof repair, flat roofing, roof replacement installation, eavestrough gutters
11. Trusted Roofers Toronto
4.9 (54 reviews)score 84/100
Jaime's team covers flat roofs, ice dam repair and flashing-adjacent exterior work backed by a 10-year workmanship warranty, and 52 of 54 reviews land at five stars. Same-day turnaround on repairs and repeat hires for follow-up projects point to reliable results overall.
- 10-year workmanship warranty on completed work
- Same-day repairs and quick turnaround on replacements
- Professional crew with clear communication
- Clients rehire for follow-up projects
Watch out: One reviewer reported a job left unfinished due to poor communication, an outlier against an otherwise five-star record.
Google-verified54 Google reviews20 years of experience
Services: roof inspection maintenance, roofing contractor, roof replacement installation, siding contractor
12. The Roof Whisperer of Mississauga - Roof Repair & Skylight Contractor
4.9 (65 reviews)score 83/100
Andrew and the team respond quickly after hail and wind events, the kind of weather that commonly loosens chimney flashing and cracks skylight seals, and reviewers describe fair pricing with clear explanations before work starts. No repair-related complaints turn up across 65 reviews.
- Rapid response to storm and weather damage
- Technician Andrew known by name across reviews
- Fair pricing for repair work
- Explains repairs clearly before and during the job
Google-verified65 Google reviews
Services: skylight contractor, roof replacement installation, roof repair, emergency 24 7
13. Keen Roofing - Mississauga
5 (47 reviews)score 83/100
Jamie's crew fixed a skylight leak in falling rain within hours in one case and repaired hail damage the same day in another, tracing problems to their root cause and flagging issues on neighboring roofs at no charge. Five-star reviews run steady across nine months with no dips, though the 47-review base is smaller than the top of this list.
- Same-day or next-day emergency response
- Honest root-cause diagnosis rather than quick fixes
- Transparent pricing and clear communication
- Repairs that reviewers say still hold years later
Google-verified47 Google reviewssince 2012
Services: roof replacement installation, roof repair, emergency 24 7, flat roofing
14. The Roof Whisperer of Burlington - Roof Repair & Skylight Contractor
5 (44 reviews)score 82/100
Jobs here get described as arriving on schedule, finishing without cutting corners, and leaving the property spotless, whether it's a skylight replacement or a storm-related leak patch. No complaints surface across the review set, though at 44 reviews the sample is on the smaller side.
- Arrives on time and works efficiently
- Leaves properties spotless after every job
- Thorough inspections paired with honest recommendations
- Handles shingles, leaks and skylights with equal care
Watch out: Smaller review count than the higher-ranked names, though the five-star record has no dissent.
Google-verified44 Google reviews
Services: skylight contractor, roof repair, roofing contractor, siding contractor
15. The Roof Whisperer of Etobicoke
5 (42 reviews)score 82/100
Claude and the crew repair slate and cedar roofing with attention to matching materials around flashing and chimney areas, and skylight sealing draws particular praise for both function and appearance. Every one of 42 reviews is five stars, though it's the smallest review base on this list.
- Five-star track record across all reviews to date
- Rapid response to leaks and storm damage
- Precision material matching on slate and cedar repairs
- Skylight sealing and installation expertise
Watch out: Fewest reviews of the businesses on this list, so treat the track record as promising rather than fully proven.
Google-verified42 Google reviews
Services: metal roofing, chimney services, roof repair, roofing contractor
What decides who ranks first?
| Signal | Weight |
|---|---|
| Review sentiment | 28% |
| Google rating | 26% |
| Review volume | 20% |
| Profile completeness | 16% |
| Review recency | 10% |
Ranking data checked 2026-09-25 · Full methodology ›
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