39 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Guelph: O'Dwyer Insulation, CR Score 91/100; 5.0★ from 195 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Beam Me Up Scotty Insulation, posts 24/7 hours; ranked #4 of 39.
Most-reviewed: Home Service Solutions, 792 Google reviews at 4.7★, the most of 39 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
39 Guelph insulation contractors are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 18 open Saturdays and 16 open Sundays, based on posted hours. The median Google rating is 4.9★ across 39 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | O'Dwyer Insulation | 91 | 5.0★ (195) | Guelph | Sat · Sun · Evenings | Overall |
| 2 | KINA Construction | 87 | 5.0★ (41) | Guelph | Sat · Sun | — |
| 3 | Insulate Today | 86 | 5.0★ (67) | Norfolk County, 13 km away | Sat · Sun · Evenings | — |
| 4 | Beam Me Up Scotty Insulation | 86 | 5.0★ (150) | Brampton, 40 km away | 24/7 | Emergencies |
| 5 | Goose Insulation | 85 | 5.0★ (123) | Brampton, 31 km away | Sat · Sun · Evenings | — |
| 6 | Tri-City Spray Foam | 82 | 4.7★ (29) | Kitchener, 21 km away | Sat · Sun · Evenings | — |
| 7 | Airway Roofing | 81 | 5.0★ (131) | Norfolk County, 31 km away | 24/7 | — |
| 8 | Home Service Solutions | 81 | 4.7★ (792) | Kitchener, 19 km away | Sat · Sun · Evenings | Most reviews |
| 9 | The Caulk King | 81 | 4.8★ (24) | Kitchener, 27 km away | Sat · Sun · Evenings | — |
| 10 | Unique Thermal Solutions | 81 | 5.0★ (42) | Burlington, 39 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 trade focus: 5.0★ from 195 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Guelph
Ranked #2 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Norfolk County, 13 km away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Brampton, 40 km away
Ranked #4 because of its Google rating and availability: 5.0★ from 150 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Brampton, 31 km away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 123 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kitchener, 21 km away
Ranked #6 because of its Google rating and trade focus: 4.7★ from 29 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Norfolk County, 31 km away
Ranked #7 because of its Google rating and availability: 5.0★ from 131 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kitchener, 19 km away
Ranked #8 because of its Google rating and review volume: 4.7★ from 792 Google reviews, the most Google reviews on this list (792).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kitchener, 27 km away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Burlington, 39 km away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 42 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Waterloo, 22 km away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 405 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cambridge, 19 km away
Ranked #12 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 Cambridge, 17 km away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 119 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cambridge, 16 km away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 73 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Milton, 33 km away
Ranked #15 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 Brant, 20 km away
Ranked #16 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Brampton, 30 km away
Ranked #17 because of its Google rating and availability: 4.9★ from 83 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kitchener, 15 km away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 42 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kitchener, 17 km away
Ranked #19 because of its Google rating and availability: 4.5★ from 37 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kitchener, 23 km away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kitchener, 18 km away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 22 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Milton, 30 km away
Ranked #22 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 Waterloo, 23 km away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Norfolk County, 19 km away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Waterloo, 24 km away
Ranked #25 because of its Google rating and availability: 4.2★ from 19 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #39, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Procraft contracting | 72 | 5.0★ (6) | 22 km |
| 27 | Stevenson Insulation Inc | 72 | 4.7★ (6) | 17 km |
| 28 | Complete Attic Insulation Inc | 72 | 4.9★ (42) | 40 km |
| 29 | RPM @ Home Team Golden Horseshoe | 72 | 4.7★ (312) | 16 km |
| 30 | Dome Contracting | 72 | 4.8★ (12) | 27 km |
| 31 | Enerliv Insulation | 72 | 4.2★ (24) | 25 km |
| 32 | LVL 5 Contracting | 71 | 5.0★ (22) | 28 km |
| 33 | Canadian Comforts Home Services | 71 | 5.0★ (192) | 34 km |
| 34 | Victory Insulation KW inc | 70 | 5.0★ (3) | 13 km |
| 35 | Just Foam Insulation | 68 | 3.7★ (3) | 28 km |
| 36 | Complete Roofing & Insulation | 67 | 4.3★ (106) | 38 km |
| 37 | Horizon Contracting | 67 | 4.9★ (11) | 17 km |
| 38 | AM Group Exteriors - Kitchener | 66 | 4.1★ (138) | 24 km |
| 39 | Grizzly Construction | 65 | 5.0★ (17) | 32 km |
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 |
|---|---|---|
| Apex Insulation Inc | 5.0★ (2) | 16 km |
| Blais Electric | 4.9★ (719) | In Guelph |
| Canada Comfort Insulation | In Guelph | |
| Custom Contracting Roofing & Eavestrough Repair Guelph | 4.8★ (16) | In Guelph |
| Dannemann Insulation | 3.0★ (2) | 23 km |
| Dowle & Sons Roofing | 4.8★ (44) | In Guelph |
| Empire Exteriors | 4.8★ (116) | In Guelph |
| Evolve Builders Group Inc. | 4.4★ (17) | In Guelph |
| Ewing Industries | 5.0★ (1) | In Guelph |
| Golden Gate Spray Foam & Fire Proofing | 5.0★ (2) | 23 km |
| Grizzly Bear Contracting | In Guelph | |
| Guelph Residential Services | In Guelph | |
| Halo Environmental | In Guelph | |
| Hy-Grade Steel Roofing | 4.4★ (234) | In Guelph |
| Insulation Guelph | In Guelph | |
| Irvine Contracting Inc | 3.0★ (2) | 25 km |
| RBJ Contracting | 4.3★ (6) | In Guelph |
| Royal City General Contracting INC. | 5.0★ (11) | In Guelph |
| Super Sprayers | 5.0★ (2) | In Guelph |
| Thomasfield Homes Limited | 4.0★ (36) | In Guelph |
US national ranges converted to CAD, not adjusted for Guelph. 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 39 Guelph 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 Guelph 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 |