9 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in South Huron: Net Zero Insulation, CR Score 83/100; 4.9★ from 142 Google reviews; open Saturdays until 8 PM.
Best for emergencies (open 24/7): Active Environmental Safety, posts 24/7 hours; ranked #5 of 9.
Most-reviewed: Precise Interior & Exterior Inc., 34 Google reviews at 5.0★, the most of 9 ranked after Net Zero Insulation; ranked #9.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
9 South Huron insulation contractors are ranked here by CR Score, from 8 published factors. 1 is open 24/7, 3 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 4.9★ across 9 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Net Zero Insulation | 83 | 4.9★ (142) | London, 38 km away | Sat · Evenings | Overall |
| 2 | Janzen Insulation | 78 | 4.4★ (7) | Bluewater, 31 km away | — | — |
| 3 | London Star Drywall | 75 | 3.6★ (5) | London, 39 km away | — | — |
| 4 | Forever Foam Insulation Inc. | 74 | 4.9★ (18) | Norfolk County, 34 km away | — | — |
| 5 | Active Environmental Safety | 74 | 4.3★ (6) | London, 38 km away | 24/7 | Emergencies |
| 6 | Arctic Attics | 74 | 5.0★ (3) | London, 23 km away | Sat | — |
| 7 | Van Moorsel H Insulation | 71 | 3.8★ (18) | Huron East, 37 km away | — | — |
| 8 | Advanced Insulation Canada | 69 | 5.0★ (3) | Goderich, 39 km away | — | — |
| 9 | Precise Interior & Exterior Inc. | 68 | 5.0★ (34) | London, 38 km away | — | Most reviews |
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 review volume: 4.9★ from 142 Google reviews, the most Google reviews on this list (142).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bluewater, 31 km away
Ranked #2 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in London, 39 km away
Ranked #3 because of its Google rating and trade focus: 3.6★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Norfolk County, 34 km away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in London, 38 km away
Ranked #5 because of its Google rating and availability: 4.3★ from 6 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in London, 23 km away
Ranked #6 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.
Based in Huron East, 37 km away
Ranked #7 because of its Google rating and trade focus: 3.8★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Goderich, 39 km away
Ranked #8 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.
Based in London, 38 km away
Ranked #9 because of its Google rating and review volume: 5.0★ from 34 Google reviews, 34 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
US national ranges converted to CAD, not adjusted for South Huron. 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 9 South Huron 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 South Huron 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 |