136 siding contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Oshawa: Colin's Roofing & Eavestrough Inc., CR Score 90/100; 4.9★ from 92 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Home Doctor, posts 24/7 hours; ranked #2 of 136.
Most-reviewed: Mr. Handyman of Toronto N, Richmond Hill, Markham W., 358 Google reviews at 4.7★, the most of 136 ranked; ranked #24.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
136 Oshawa siding contractors are ranked here by CR Score, from 8 published factors. 19 are open 24/7, 87 open Saturdays and 50 open Sundays, based on posted hours. The median Google rating is 5.0★ across 136 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Colin's Roofing & Eavestrough Inc. | 90 | 4.9★ (92) | Oshawa | Sat · Sun · Evenings | Overall |
| 2 | Home Doctor | 89 | 4.8★ (51) | Pickering, 21 km away | 24/7 | Emergencies |
| 3 | GEXR Extreme Exteriors | 89 | 5.0★ (76) | Ajax, 9 km away | Sat · Sun · Evenings | — |
| 4 | RMS siding and eavestrough | 89 | 4.7★ (72) | Oshawa | — | — |
| 5 | Branova Siding Installation & Repair Toronto | 88 | 5.0★ (181) | Toronto, 41 km away | 24/7 | — |
| 6 | Infinity Gutters & Exteriors | 88 | 4.9★ (86) | North York, 52 km away | 24/7 | — |
| 7 | Windmill Roofing & Exteriors | 87 | 5.0★ (41) | Ajax, 8 km away | Sat · Sun · Evenings | — |
| 8 | 1-855-wanna-reno | 87 | 4.9★ (41) | Ajax, 9 km away | Sat · Sun · Evenings | — |
| 9 | Sherak Ltd | 86 | 4.8★ (42) | East Gwillimbury, 43 km away | 24/7 | — |
| 10 | Mega City Roofing Inc | 86 | 5.0★ (105) | Ajax, 11 km away | Sat · Sun · Emergency | — |
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 trade focus: 4.9★ from 92 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Pickering, 21 km away
Ranked #2 because of its Google rating and availability: 4.8★ from 51 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ajax, 9 km away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 76 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Oshawa
Ranked #4 because of its Google rating and trade focus: 4.7★ from 72 Google reviews, listed on Google as “Siding contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Toronto, 41 km away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 181 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in North York, 52 km away
Ranked #6 because of its Google rating and availability: 4.9★ from 86 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ajax, 8 km away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ajax, 9 km away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 41 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in East Gwillimbury, 43 km away
Ranked #9 because of its Google rating and availability: 4.8★ from 42 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ajax, 11 km away
Ranked #10 because of its Google rating and availability: 5.0★ from 105 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Markham, 53 km away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 114 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Richmond Hill, 46 km away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 71 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Vaughan, 56 km away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 121 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Brampton, 46 km away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 61 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in East York, 47 km away
Ranked #15 because of its Google rating and availability: 4.5★ from 26 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ajax, 41 km away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 39 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Etobicoke, 63 km away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 292 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Vaughan, 56 km away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 320 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ajax, 16 km away
Ranked #19 because of its Google rating and availability: 4.8★ from 47 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Pickering, 20 km away
Ranked #20 because of its Google rating and availability: 5.0★ from 40 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Oshawa
Ranked #21 because of its Google rating and trade focus: 4.8★ from 29 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Burlington, 54 km away
Ranked #22 because of its Google rating and availability: 4.8★ from 224 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Etobicoke, 59 km away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 51 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Norfolk County, 60 km away
Ranked #24 because of its Google rating and review volume: 4.7★ from 358 Google reviews, the most Google reviews on this list (358).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cobourg, 13 km away
Ranked #25 because of its Google rating and availability: 5.0★ from 15 Google reviews, open 24/7.
Based on 6 of 8 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 136 ranked siding contractors here; the rest are on their profiles.
20 more siding contractors 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 |
|---|---|---|
| Ajax Roofing Inc | 5.0★ (38) | In Oshawa |
| Bradshaw Builds | 4.7★ (33) | In Oshawa |
| Building Problems Solver Inc. | 5.0★ (23) | In Oshawa |
| CertaPro Painters of Oshawa/Pickering | 4.9★ (120) | In Oshawa |
| DayJobs - Window Cleaning | 5.0★ (60) | In Oshawa |
| Dowling & Sons Windows and Doors | 4.8★ (22) | In Oshawa |
| Fice Multi Trade Inc. | 5.0★ (41) | In Oshawa |
| Finley Roofing | 4.7★ (27) | In Oshawa |
| Fire Beard Contracting | 5.0★ (29) | In Oshawa |
| Fyfe's Roofing | 4.9★ (31) | In Oshawa |
| Henley Contracting Ltd. | 4.8★ (50) | In Oshawa |
| King Street Roofing | 4.3★ (42) | In Oshawa |
| Paradisaic Building Group | 5.0★ (53) | In Oshawa |
| Pristine Contracting Inc. | 5.0★ (24) | In Oshawa |
| Quality Home Improvements | 4.8★ (31) | In Oshawa |
| See-More Window Cleaning | 5.0★ (51) | In Oshawa |
| Superior Solutions Contracting | 4.9★ (37) | In Oshawa |
| The Eavestrough Guy | 4.6★ (37) | In Oshawa |
| Turnbull Roofing & Renovations Ltd | 4.5★ (65) | In Oshawa |
| Wilson Roofing | 5.0★ (518) | 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 |
|---|---|---|---|---|---|
| Siding replacement | CA$7,810 | CA$16,290 | CA$24,910 | Per house: typical range of customer-reported projects. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
We scored 136 Oshawa siding contractors 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 |