50 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Keswick: Celluloseman Inc., CR Score 62/100; 5.0★ from 135 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Frank's Spray Foam Insulation Inc, posts 24/7 hours; ranked #4 of 50.
Most-reviewed: Ainger Group Roofing and Exteriors, 476 Google reviews at 4.9★, the most of 50 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
50 Keswick insulation contractors are ranked here by CR Score, from ten published factors. 10 are open 24/7, 34 open Saturdays and 25 open Sundays, based on posted hours. The median Google rating is 4.9★ across 50 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Celluloseman Inc. | 62 | 5.0★ (135) | Markham, 16 km away | Sat · Sun · Evenings | Overall |
| 2 | Insulation Newmarket - Jarrah Contracting Services | 60 | 4.8★ (132) | Newmarket, 23 km away | Sat · Sun · Evenings | — |
| 3 | Spartan Insulation | 59 | 5.0★ (50) | Barrie, 19 km away | Sat · Sun · Evenings | — |
| 4 | Frank's Spray Foam Insulation Inc | 58 | 5.0★ (14) | East Gwillimbury, 14 km away | 24/7 | Emergencies |
| 5 | Ainger Group Roofing and Exteriors | 58 | 4.9★ (476) | Barrie, 24 km away | 24/7 | Most reviews |
| 6 | Spray Foam Kings | 58 | 4.9★ (64) | Aurora, 28 km away | Sat · Sun · Evenings | — |
| 7 | Addmore Insulation | 58 | 4.6★ (36) | Barrie, 27 km away | 24/7 | — |
| 8 | White Dust Drywall | 57 | 4.9★ (10) | Barrie, 9 km away | Sat · Sun · Evenings | — |
| 9 | Clear Air Solutions | 57 | 4.6★ (31) | Barrie, 21 km away | Sat · Sun · Evenings | — |
| 10 | Gorilla Insulation- Spray Foam and Drywall | 57 | 5.0★ (22) | East Gwillimbury, 12 km away | Sat · Evenings | — |
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: 5.0★ from 135 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Newmarket, 23 km away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 132 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 19 km away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 50 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Gwillimbury, 14 km away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 24 km away
Ranked #5 because of its Google rating and review volume: 4.9★ from 476 Google reviews, the most in Keswick.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Aurora, 28 km away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 64 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 27 km away
Ranked #7 because of its Google rating and trade focus: 4.6★ from 36 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 9 km away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 21 km away
Ranked #9 because of its Google rating and trade focus: 4.6★ from 31 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Gwillimbury, 12 km away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 24 km away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 21 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 34 km away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gravenhurst, 13 km away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Gwillimbury, 31 km away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 45 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Newmarket, 21 km away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 62 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Aurora, 28 km away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 21 km away
Ranked #17 because of its Google rating and review volume: 5.0★ from 124 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 19 km away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 22 km away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Gwillimbury, 36 km away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 44 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 17 km away
Ranked #21 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 25 km away
Ranked #22 because of its Google rating and trade focus: 4.3★ from 148 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Gwillimbury, 27 km away
Ranked #23 because of its Google rating and trade focus: 4.3★ from 12 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Innisfil, 9 km away
Ranked #24 because of its Google rating and availability: 4.3★ from 15 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 20 km away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Insulation 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.
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 |
|---|---|---|
| Air-Tight Insulation Systems | 5.0★ (2) | 11 km |
| Arcamm Roofing, Insulation & Eavestrough | 11 km | |
| Celluloseman | 13 km | |
| COMPLETE INSULATION | 18 km | |
| Creative Global Services | 5.0★ (2) | 19 km |
| EcoStar Insulation - Spray Foam Professionals | 8 km | |
| Elder's Insulation & Drywall | 5.0★ (2) | 17 km |
| Insulation Innisfil- Jarrah Contracting Services inc | 13 km | |
| Medoro Insulation | 17 km | |
| MJGTA Contracting | 5.0★ (6) | In Keswick |
| Morton Carpentry Complete Home Renovations | 5.0★ (11) | In Keswick |
| Obvious Choice Contracting Inc | 5.0★ (2) | 21 km |
| Orillia Spray Foam Insulation | 13 km | |
| Right Choice Spray Foam Solutions Inc | 5.0★ (2) | 36 km |
| Roberts Air Systems | 5.0★ (1) | 19 km |
| ROI Renos | 4.8★ (22) | In Keswick |
| Smart Drywall | 5.0★ (9) | In Keswick |
| South Innisfil Insulation | In Keswick | |
| SPFM Spray Foam Insulation and Coatings | 5.0★ (1) | 30 km |
| ThermEco Construction Corp. | 5.0★ (1) | 24 km |
US national ranges converted to CAD, not adjusted for Keswick. 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 50 Keswick insulation contractors 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 Keswick 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 |