15 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Cobourg: Central Ontario Spray Foam, CR Score 90/100; 5.0★ from 20 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Active Environmental Safety, posts 24/7 hours; ranked #2 of 15.
Most-reviewed: GWC Insulation, 40 Google reviews at 5.0★, the most of 15 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
15 Cobourg insulation contractors are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 4 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 5.0★ across 15 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Central Ontario Spray Foam | 90 | 5.0★ (20) | Cobourg | Sat · Sun · Evenings | Overall |
| 2 | Active Environmental Safety | 88 | 5.0★ (26) | Peterborough, 37 km away | 24/7 | Emergencies |
| 3 | Vera Drywall - Kawartha Lakes & Toronto | 87 | 5.0★ (24) | Cobourg | Sat | — |
| 4 | GWC Insulation | 85 | 5.0★ (40) | Cobourg | — | Most reviews |
| 5 | Trillium East Insulation Inc. | 85 | 5.0★ (29) | Cobourg | — | — |
| 6 | Stevens Insulation Services | 84 | 4.9★ (34) | Cobourg | — | — |
| 7 | Drywall Kings | 83 | 5.0★ (20) | Peterborough, 40 km away | — | — |
| 8 | Full Spectrum Interiors Inc. | 83 | 5.0★ (12) | Oshawa, 12 km away | 24/7 | — |
| 9 | Durham Insulation | 81 | 4.0★ (31) | Cobourg | — | — |
| 10 | Refine Drywall | 79 | 5.0★ (27) | Barrie, 27 km away | — | — |
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: 5.0★ from 20 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Peterborough, 37 km away
Ranked #2 because of its Google rating and availability: 5.0★ from 26 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cobourg
Ranked #3 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cobourg
Ranked #4 because of its Google rating and review volume: 5.0★ from 40 Google reviews, the most Google reviews on this list (40).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cobourg
Ranked #5 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cobourg
Ranked #6 because of its Google rating and trade focus: 4.9★ from 34 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Peterborough, 40 km away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Oshawa, 12 km away
Ranked #8 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 Cobourg
Ranked #9 because of its Google rating and trade focus: 4.0★ from 31 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Barrie, 27 km away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cobourg
Ranked #11 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cobourg
Ranked #12 because of its Google rating and trade focus: 3.4★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Peterborough, 37 km away
Ranked #13 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.
Based in Cobourg
Ranked #14 because of its Google rating and review volume: 4.6★ from 14 Google reviews, 14 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Peterborough, 37 km away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
16 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 |
|---|---|---|
| Air-Tight Insulation Systems | 5.0★ (2) | In Cobourg |
| Arcamm Roofing, Insulation and Eavestrough | 1.0★ (1) | In Cobourg |
| Callahan Drywall & Contracting | 5.0★ (1) | In Cobourg |
| Canadian Wall Systems Inc | 5.0★ (2) | In Cobourg |
| Dyson Construction and Renovation | 4.8★ (17) | In Cobourg |
| Kelly Green Contracting Group | 5.0★ (16) | In Cobourg |
| Kratos Contracting | 4.8★ (16) | In Cobourg |
| McKenzie Drywall Inc. | 4.2★ (25) | In Cobourg |
| McLean Chimney Co Ltd | 4.9★ (8) | In Cobourg |
| Munro's Drywall and Contracting | 1.0★ (2) | In Cobourg |
| Noble | 4.5★ (13) | In Cobourg |
| Northumberland Drywall | 4.8★ (4) | In Cobourg |
| Prime Windows and Doors | 4.9★ (39) | In Cobourg |
| Thermo Seal Insulation System | In Cobourg | |
| Viking Insulation Company Inc. | In Cobourg | |
| Worbo Inc. | 37 km |
US national ranges converted to CAD, not adjusted for Cobourg. 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 15 Cobourg 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 Cobourg 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 |