8 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Lethbridge: Insulation Lethbridge, CR Score 87/100; 4.7★ from 12 Google reviews; open 7 days a week.
Most-reviewed: Sunny South Insulators, 49 Google reviews at 4.9★, the most of 8 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
8 Lethbridge insulation contractors are ranked here by CR Score, from 8 published factors. 2 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 4.9★ across 8 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Insulation Lethbridge | 87 | 4.7★ (12) | Lethbridge | Sat · Sun · Evenings | Overall |
| 2 | Sunny South Insulators | 85 | 4.9★ (49) | Lethbridge | — | Most reviews |
| 3 | Spraytek Spray Foam Insulation and roofing systems | 84 | 5.0★ (4) | Lethbridge | — | — |
| 4 | Double R Value Insulation Ltd | 84 | 4.9★ (40) | Lethbridge | — | — |
| 5 | Patterson Insulation Ltd. | 83 | 5.0★ (15) | Lethbridge | Sat | — |
| 6 | Spraytek Insulation Ltd. | 83 | 4.9★ (23) | Lethbridge | — | — |
| 7 | Top All Drywall Ltd. | 76 | 5.0★ (3) | Lethbridge | — | — |
| 8 | Drywall Worx | 74 | 4.5★ (15) | Lethbridge | — | — |
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: 4.7★ from 12 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lethbridge
Ranked #2 because of its Google rating and review volume: 4.9★ from 49 Google reviews, the most Google reviews on this list (49).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lethbridge
Ranked #3 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Lethbridge
Ranked #4 because of its Google rating and trade focus: 4.9★ from 40 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lethbridge
Ranked #5 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 Lethbridge
Ranked #6 because of its Google rating and trade focus: 4.9★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lethbridge
Ranked #7 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Construction company”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Lethbridge
Ranked #8 because of its Google rating and review volume: 4.5★ from 15 Google reviews, 15 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
US national ranges converted to CAD, not adjusted for Lethbridge. 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 8 Lethbridge 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 Lethbridge 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 |