32 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Waterloo: Reitzel Insulation, CR Score 62/100; 4.9★ from 405 Google reviews.
Best for emergencies (open 24/7): Elemental Restoration, posts 24/7 hours; ranked #5 of 32.
Most-reviewed: Home Service Solutions, 792 Google reviews at 4.7★, the most of 32 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
32 Waterloo insulation contractors are ranked here by CR Score, from ten published factors. 1 is open 24/7, 13 open Saturdays and 10 open Sundays, based on posted hours. The median Google rating is 4.9★ across 32 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Reitzel Insulation | 62 | 4.9★ (405) | Waterloo | — | Overall |
| 2 | O'Dwyer Insulation | 61 | 5.0★ (195) | Guelph, 21 km away | Sat · Sun · Evenings | — |
| 3 | Tri-City Spray Foam | 59 | 4.7★ (29) | Kitchener, 3 km away | Sat · Sun · Evenings | — |
| 4 | Home Service Solutions | 59 | 4.7★ (792) | Kitchener, 4 km away | Sat · Sun · Evenings | Most reviews |
| 5 | Elemental Restoration | 58 | 4.9★ (108) | Brantford, 39 km away | 24/7 | Emergencies |
| 6 | Insulate Today | 58 | 5.0★ (67) | Norfolk County, 28 km away | Sat · Sun · Evenings | — |
| 7 | KINA Construction | 57 | 5.0★ (41) | Guelph, 25 km away | Sat · Sun | — |
| 8 | Fase Two Insulation | 57 | 5.0★ (119) | Cambridge, 19 km away | — | — |
| 9 | Koala Insulation of Kitchener Waterloo | 56 | 4.9★ (73) | Cambridge, 18 km away | — | — |
| 10 | Grand River Insulation | 55 | 5.0★ (16) | Waterloo | — | — |
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: 4.9★ from 405 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Guelph, 21 km away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 195 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kitchener, 3 km away
Ranked #3 because of its Google rating and trade focus: 4.7★ from 29 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kitchener, 4 km away
Ranked #4 because of its Google rating and review volume: 4.7★ from 792 Google reviews, the most in Waterloo.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brantford, 39 km away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 108 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Norfolk County, 28 km away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Guelph, 25 km away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cambridge, 19 km away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 119 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cambridge, 18 km away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 73 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waterloo
Ranked #10 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kitchener, 8 km away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kitchener, 5 km away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 22 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Norfolk County, 7 km away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cambridge, 14 km away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kitchener, 9 km away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 42 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kitchener, 8 km away
Ranked #16 because of its Google rating and trade focus: 4.2★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brant, 8 km away
Ranked #17 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Kitchener, 6 km away
Ranked #18 because of its Google rating and trade focus: 4.7★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kitchener, 6 km away
Ranked #19 because of its Google rating and review volume: 4.5★ from 37 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waterloo
Ranked #20 because of its Google rating and trade focus: 4.2★ from 19 Google reviews, listed on Google as “Gutter Cleaning Service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kitchener, 6 km away
Ranked #21 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cambridge, 16 km away
Ranked #22 because of its Google rating and review volume: 4.7★ from 312 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kitchener, 6 km away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Construction company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cambridge, 12 km away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kitchener, 5 km away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
US national ranges converted to CAD, not adjusted for Waterloo. 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 32 Waterloo 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 Waterloo 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 |