61/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 44 Google reviews
- Hours
- Mon–Fri 7 AM–4:30 PM · Sat–Sun closed
Best Insulation Contractors in Duncan, BC (2026)
9 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Duncan: Insolex and GoGreen Insulation, CR Score 61/100; 5.0★ from 44 Google reviews.
- 8
Best for emergencies (open 24/7): RGH Construction, posts 24/7 hours; ranked #8 of 9.
- 7
Most-reviewed: Greenfoot Energy Solutions, 102 Google reviews at 4.9★, the most of 9 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
9 Duncan insulation contractors are ranked here by CR Score, from ten published factors. 1 is open 24/7, 4 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 5.0★ across 9 rated businesses.
Top 9 insulation contractors in Duncan at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Insolex and GoGreen Insulation | 61 | 5.0★ (44) | Colwood, 3 km away | — | Overall |
| 2 | Advance Insulation Canada | 57 | 5.0★ (45) | Victoria, 40 km away | Sat | — |
| 3 | TomWay Extractions and Insulation | 56 | 5.0★ (38) | Salt Spring Island, 30 km away | — | — |
| 4 | WD McCance & Son Building Service | 55 | 5.0★ (7) | Salt Spring Island, 28 km away | Sat · Sun · Evenings | — |
| 5 | CE Spray Foam Solutions Inc. | 55 | 4.9★ (21) | Salt Spring Island, 25 km away | — | — |
| 6 | Steel City Drywall Ltd. | 53 | 4.7★ (87) | Colwood, 38 km away | Sat · Sun | — |
| 7 | Greenfoot Energy Solutions | 51 | 4.9★ (102) | Langford, 39 km away | — | Most reviews |
| 8 | RGH Construction | 50 | 3.9★ (11) | North Cowichan, 28 km away | 24/7 | Emergencies |
| 9 | Before and After Painting inc. | 44 | 5.0★ (5) | Colwood, 33 km away | — | — |
The 9 best insulation contractors in Duncan, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Victoria, 40 km away
57/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 45 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 45 Google reviews
- Hours
- Mon–Sat 8 AM–6 PM · Sun closed
- Address
- 48158 RPO Uptown, Victoria, BC V8Z 7H6
Based in Salt Spring Island, 30 km away
56/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 38 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
Based in Salt Spring Island, 28 km away
55/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 7 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
Based in Salt Spring Island, 25 km away
55/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 21 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 21 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 2011 Malaview Ave W, Sidney, BC V8L 5X6
Based in Colwood, 38 km away
53/100CR ScoreRanked #6 because of its Google rating and review volume: 4.7★ from 87 Google reviews.
- 4.7★ from 87 Google reviews
- Hours
- Mon–Sun 8 AM–6 PM
Based in Langford, 39 km away
51/100CR ScoreRanked #7 because of its Google rating and review volume: 4.9★ from 102 Google reviews, the most in Duncan.
- 4.9★ from 102 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 2360 Millstream Rd Unit 115, Langford, BC V9B 3R3
Based in North Cowichan, 28 km away
50/100CR ScoreRanked #8 because of its Google rating and review volume: 3.9★ from 11 Google reviews.
- 3.9★ from 11 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Colwood, 33 km away
44/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Contractor”.
- 5.0★ from 5 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
How much do insulation contractors cost in Duncan?
US national ranges converted to CAD, not adjusted for Duncan. 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 |
How we ranked Duncan insulation contractors
We scored 9 Duncan 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 Duncan 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 |
Insulation contractors in Duncan: frequently asked questions
Who is the best insulation contractor in Duncan?
By CR Score, the highest-ranked insulation contractor in Duncan, BC is Insolex and GoGreen Insulation with a CR Score of 61/100. It has 5.0★ from 44 Google reviews. Advance Insulation Canada (#2) and TomWay Extractions and Insulation (#3) follow. We ranked 9 insulation contractors on ten factors, last updated October 22, 2026.
Which insulation contractors in Duncan are open 24/7?
1 ranked insulation contractor in Duncan posts 24/7 hours. The highest-ranked is RGH Construction (#8). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which insulation contractors in Duncan work on weekends?
4 of 9 ranked insulation contractors post Saturday hours and 3 post Sunday hours. The highest-ranked open Saturdays are Advance Insulation Canada (#2), WD McCance & Son Building Service (#4) and Steel City Drywall Ltd. (#6). Posted hours are office hours; crews may book weekend jobs separately.
How much does attic insulation cost in Duncan?
Attic insulation typically costs CA$2,390 to CA$3,510, with CA$2,950 typical (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)). This is a national range, not adjusted for Duncan. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Duncan insulation contractors have?
The median Google rating among 9 rated insulation contractors in Duncan is 5.0★, with a median of 38 reviews. Greenfoot Energy Solutions has the most, 102 reviews, and ranks #7. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank insulation contractors?
Each insulation contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do insulation contractors outside Duncan count in this ranking?
Yes, if they are within 40 km of the Duncan city centre, our service radius for insulation contractors. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Can insulation contractors pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Duncan
- October 2026: CR Scores recalculated for 9 insulation contractors serving Duncan.
More insulation contractors and Duncan pages
Insulation contractors near Duncan
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