22 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Woodstock: Koala Insulation of London, CR Score 55/100; 5.0★ from 21 Google reviews; open 24/7.
Most-reviewed: Hometown Heating and Cooling, 827 Google reviews at 4.9★, the most of 22 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
22 Woodstock insulation contractors are ranked here by CR Score, from ten published factors. 1 is open 24/7, 7 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 4.8★ across 22 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Koala Insulation of London | 55 | 5.0★ (21) | London, 35 km away | 24/7 | Overall |
| 2 | Net Zero Insulation | 55 | 4.9★ (142) | London, 40 km away | Sat · Evenings | — |
| 3 | Woodstock Spray Foam Insulation | 55 | 5.0★ (6) | Woodstock | Sat · Evenings | — |
| 4 | Great Northern Insulation | 55 | 4.7★ (368) | London, 37 km away | — | — |
| 5 | Hometown Heating and Cooling | 54 | 4.9★ (827) | Ingersoll, 15 km away | — | Most reviews |
| 6 | Big Country Insulation | 53 | 5.0★ (7) | Brant, 17 km away | Sat | — |
| 7 | Driedger Brothers Insulation | 51 | 5.0★ (13) | Norfolk County, 25 km away | — | — |
| 8 | Sprayco Insulation Inc. | 51 | 4.7★ (15) | Aylmer, 37 km away | Sat · Evenings | — |
| 9 | Titanium Insulation Inc. | 50 | 5.0★ (26) | Kitchener, 38 km away | — | — |
| 10 | Forever Foam Insulation Inc. | 50 | 4.9★ (18) | Norfolk County, 33 km away | — | — |
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 21 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London, 40 km away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 142 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Woodstock
Ranked #3 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 London, 37 km away
Ranked #4 because of its Google rating and trade focus: 4.7★ from 368 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ingersoll, 15 km away
Ranked #5 because of its Google rating and review volume: 4.9★ from 827 Google reviews, the most in Woodstock.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brant, 17 km away
Ranked #6 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 Norfolk County, 25 km away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Aylmer, 37 km away
Ranked #8 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kitchener, 38 km away
Ranked #9 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 Norfolk County, 33 km away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Kitchener, 37 km away
Ranked #11 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 London, 35 km away
Ranked #12 because of its Google rating and trade focus: 4.2★ from 12 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London, 40 km away
Ranked #13 because of its Google rating and trade focus: 3.6★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Norfolk County, 33 km away
Ranked #14 because of its Google rating and trade focus: 3.9★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brantford, 40 km away
Ranked #15 because of its Google rating and review volume: 4.6★ from 84 Google reviews.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Paris, 30 km away
Ranked #16 because of its Google rating and trade focus: 2.3★ 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, 36 km away
Ranked #17 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 Kitchener, 36 km away
Ranked #18 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 Kitchener, 40 km away
Ranked #19 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.
Based in Kitchener, 40 km away
Ranked #20 because of its Google rating and review volume: 4.1★ from 138 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Stratford, 31 km away
Ranked #21 because of its Google rating and trade focus: 3.0★ from 6 Google reviews, listed on Google as “General contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Stratford, 33 km away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 4 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
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 |
|---|---|---|
| A & H Drywall | 5.0★ (2) | In Woodstock |
| A-1 Xteriors Inc | 3.0★ (2) | In Woodstock |
| Attic Loose Fill Solutions | 5.0★ (1) | 35 km |
| By The Code Construction | 3.0★ (4) | In Woodstock |
| Dannemann Insulation | 3.0★ (2) | 39 km |
| Fibre General Contracting Inc | 5.0★ (32) | In Woodstock |
| Frenchy's Insulation | 5.0★ (1) | In Woodstock |
| Gaulin Roofing | 4.2★ (10) | In Woodstock |
| Golden Gate Spray Foam & Fire Proofing | 5.0★ (2) | 38 km |
| Home Building Products | 4.6★ (41) | In Woodstock |
| HotRockPanels | 5.0★ (2) | 36 km |
| Insulation Brantford | 5.0★ (1) | 40 km |
| Insulation Ingersoll | 15 km | |
| Irvine Contracting Inc | 3.0★ (2) | 36 km |
| JanVeek Concrete Homes | 5.0★ (4) | In Woodstock |
| JB and Sons Aluminum | 4.5★ (6) | In Woodstock |
| JCG Building Solutions | 3.4★ (5) | In Woodstock |
| KDM Erectors | 5.0★ (4) | In Woodstock |
| Mcloughlin Treasures | In Woodstock | |
| Mr. Rooter Plumbing of Woodstock ON | 4.5★ (205) | In Woodstock |
US national ranges converted to CAD, not adjusted for Woodstock. 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 22 Woodstock 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 Woodstock 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 |