45 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Oshawa: Logik Roofing & Insulation Oshawa, CR Score 93/100; 4.9★ from 400 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Koala Insulation of Durham, posts 24/7 hours; ranked #3 of 45.
Most-reviewed: Superior Care Home Services Inc., 266 Google reviews at 5.0★, the most of 45 ranked after Logik Roofing & Insulation Oshawa; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
45 Oshawa insulation contractors are ranked here by CR Score, from 8 published factors. 5 are open 24/7, 30 open Saturdays and 23 open Sundays, based on posted hours. The median Google rating is 4.9★ across 45 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Logik Roofing & Insulation Oshawa | 93 | 4.9★ (400) | Oshawa | Sat · Sun · Evenings | Overall |
| 2 | DJM Spray Foam | 89 | 5.0★ (52) | Oshawa | Sat · Sun · Evenings | — |
| 3 | Koala Insulation of Durham | 88 | 5.0★ (11) | Oshawa | 24/7 | Emergencies |
| 4 | The Same Guys Insulation | 88 | 5.0★ (80) | Ajax, 12 km away | Sat · Sun | — |
| 5 | The Spray Foam Guy Inc. | 85 | 4.5★ (19) | Oshawa | Sat · Sun | — |
| 6 | Logik Roofing & Insulation Whitby | 83 | 5.0★ (9) | Ajax, 6 km away | Sat · Sun · Evenings | — |
| 7 | Superior Care Home Services Inc. | 83 | 5.0★ (266) | Markham, 40 km away | 24/7 | Most reviews |
| 8 | SWAT Wildlife Inc | 82 | 5.0★ (21) | Ajax, 5 km away | 24/7 | — |
| 9 | Full Spectrum Interiors Inc. | 82 | 5.0★ (12) | Oshawa | 24/7 | — |
| 10 | GEXR Extreme Exteriors | 82 | 5.0★ (76) | Ajax, 9 km away | Sat · Sun · Evenings | — |
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 review volume: 4.9★ from 400 Google reviews, the most Google reviews on this list (400).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Oshawa
Ranked #2 because of its Google rating and trade focus: 5.0★ from 52 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Oshawa
Ranked #3 because of its Google rating and availability: 5.0★ from 11 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ajax, 12 km away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 80 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Oshawa
Ranked #5 because of its Google rating and trade focus: 4.5★ from 19 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ajax, 6 km away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Markham, 40 km away
Ranked #7 because of its Google rating and availability: 5.0★ from 266 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ajax, 5 km away
Ranked #8 because of its Google rating and availability: 5.0★ from 21 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Oshawa
Ranked #9 because of its Google rating and availability: 5.0★ from 12 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ajax, 9 km away
Ranked #10 because of its Google rating and availability: 5.0★ from 76 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Pickering, 20 km away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Markham, 40 km away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 145 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Oshawa
Ranked #13 because of its Google rating and trade focus: 4.5★ from 112 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Scarborough, 33 km away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Scarborough, 30 km away
Ranked #15 because of its Google rating and trade focus: 4.4★ from 59 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in East Gwillimbury, 25 km away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 152 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in North York, 36 km away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Scarborough, 35 km away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Scarborough, 34 km away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Scarborough, 39 km away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ajax, 16 km away
Ranked #21 because of its Google rating and availability: 5.0★ from 9 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Scarborough, 32 km away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Toronto, 37 km away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Markham, 39 km away
Ranked #24 because of its Google rating and trade focus: 4.2★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Brampton, 36 km away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #45, in CR Score order; each links to its profile.
20 more insulation contractors within 40 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 |
|---|---|---|
| Arcamm Roofing, Insulation & Eavestrough | In Oshawa | |
| EnviroShield Spray Foam Insulation | In Oshawa | |
| I.N. FOAM INSULATION SERVICES INC | 5.0★ (2) | 36 km |
| L.A Drywall Systems Inc | 5.0★ (5) | In Oshawa |
| Milan Insulation | 5.0★ (2) | In Oshawa |
| Newlove Spray Foam Insulation | In Oshawa | |
| NuGuard Windows and Doors | 4.8★ (21) | In Oshawa |
| Oshawa Drywall Contractors | 4.2★ (5) | In Oshawa |
| Over The Top - Roofing & Repairs | 4.9★ (149) | In Oshawa |
| Petevi Foam Insulation | 5.0★ (1) | 14 km |
| Pickering Insulation | 5.0★ (2) | 32 km |
| Poly Foam Insulation Systems Inc | 3.0★ (2) | 15 km |
| Quality Home Improvements | 4.8★ (31) | In Oshawa |
| Radom Insulation | 5.0★ (2) | In Oshawa |
| Skytech Insulation Services | 5.0★ (2) | 17 km |
| STEVENSConstructiongroup | 5.0★ (1) | In Oshawa |
| Superb Markham Spray Foam Insulation | 5.0★ (2) | 36 km |
| White & Greer Co Ltd | 5.0★ (2) | 40 km |
| Whole Home Savings | 2.5★ (2) | 37 km |
| World Class Work Roofing and Insulation | 5.0★ (2) | 36 km |
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 |
|---|---|---|---|---|---|
| Attic insulation | CA$2,390 | CA$2,950 | CA$3,510 | Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
We scored 45 Oshawa insulation 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 |