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ContractorsRanked

Best Insulation Contractors in Sarnia, ON (2026)

12 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Sarnia: Canadian Industrial Specialties Ltd, CR Score 83/100; 3.7★ from 7 Google reviews.

  2. 2

    Most-reviewed: Foam All Spray Insulation and Concrete Lifting, 101 Google reviews at 5.0★, the most of 12 ranked; ranked #2.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

12 Sarnia insulation contractors are ranked here by CR Score, from 8 published factors. 1 open Saturdays, based on posted hours. The median Google rating is 4.7★ across 12 rated businesses.

Top 10 insulation contractors in Sarnia at a glance

Top 10 insulation contractors in Sarnia at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Canadian Industrial Specialties Ltd833.7★ (7)Sarnia—Overall
2Foam All Spray Insulation and Concrete Lifting815.0★ (101)Port Huron, 3 km away—Most reviews
3Insultek Inc805.0★ (3)Sarnia——
4Integrity Insulation804.8★ (20)Sarnia——
5Precision Roofing and Construction774.6★ (35)Port Huron, 3 km awaySat—
6Spray Foam International774.9★ (9)Port Huron, 4 km away——
7Insulation Plus LLC774.7★ (13)Port Huron, 6 km away——
8B & D Insulation Inc764.2★ (6)Sarnia——
9Eco Insulation754.2★ (5)Sarnia——
10AlumaSafway Sarnia714.8★ (9)Sarnia——

The 12 best insulation contractors in Sarnia, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

  2. #2 Foam All Spray Insulation and Concrete Lifting

    Based in Port Huron, 3 km away

    81/100CR Score

    Ranked #2 because of its Google rating and review volume: 5.0★ from 101 Google reviews, the most Google reviews on this list (101).

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 5.0★ from 101 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    1318 Mansfield St, Port Huron, MI 48060, United States
    View profile for Foam All Spray Insulation and Concrete Lifting(586) 770-9171

  3. #3 Insultek Inc

    Based in Sarnia

    80/100CR Score

    Ranked #3 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.

    Based on 5 of 8 factors; credentials, recency and availability not yet collected.

    • 5.0★ from 3 Google reviews
    Address
    205 Gladwish Dr, Sarnia, ON N7T 7H5
    View profile for Insultek Inc(519) 344-1234

  4. #4 Integrity Insulation

    Based in Sarnia

    80/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.8★ from 20 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.8★ from 20 Google reviews
    Hours
    Mon–Fri 8 AM–5:30 PM · Sat–Sun closed
    Address
    100 East Street S, Sarnia, ON N7T 3R1
    View profile for Integrity Insulation(519) 381-4669

  6. #6 Spray Foam International

    Based in Port Huron, 4 km away

    77/100CR Score

    Ranked #6 because of its Google rating and trade focus: 4.9★ from 9 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.9★ from 9 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    2514 Chestnut St, Port Huron, MI 48060, United States
    View profile for Spray Foam International(810) 990-8550

  7. #7 Insulation Plus LLC

    Based in Port Huron, 6 km away

    77/100CR Score

    Ranked #7 because of its Google rating and trade focus: 4.7★ from 13 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.7★ from 13 Google reviews
    Hours
    Mon–Fri 9 AM–4:30 PM · Sat–Sun closed
    Address
    3319 Dove Rd, Port Huron, MI 48060, United States
    View profile for Insulation Plus LLC(810) 956-8700

  8. #8 B & D Insulation Inc

    Based in Sarnia

    76/100CR Score

    Ranked #8 because of its Google rating and trade focus: 4.2★ from 6 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.2★ from 6 Google reviews
    Hours
    Mon–Thu 7:30 AM–4 PM · Fri 7:30 AM–1:30 PM · Sat–Sun closed
    Address
    1351 Lougar Ave, Sarnia, ON N7S 5N5
    View profile for B & D Insulation Inc(519) 344-5287

  9. #9 Eco Insulation

    Based in Sarnia

    75/100CR Score

    Ranked #9 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.2★ from 5 Google reviews
    Hours
    Mon–Fri 8 AM–4 PM · Sat–Sun closed
    Address
    5-1030 Confederation St Suite 542, Sarnia, ON N7S 6H1
    View profile for Eco Insulation(519) 312-6058

  10. #10 AlumaSafway Sarnia

    Based in Sarnia

    71/100CR Score

    Ranked #10 because of its Google rating and trade focus: 4.8★ from 9 Google reviews, listed on Google as “Scaffolding rental service”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.8★ from 9 Google reviews
    Hours
    Mon–Fri 7 AM–4:30 PM · Sat–Sun closed
    Address
    345 St Clair St, Sarnia, ON N7T 8G7
    View profile for AlumaSafway Sarnia(519) 336-8200

  12. #12 Park Derochie Inc.

    Based in Sarnia

    69/100CR Score

    Ranked #12 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Industrial consultant”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.2★ from 5 Google reviews
    Hours
    Mon–Fri 7:30 AM–4 PM · Sat–Sun closed
    Address
    524 McGregor Side Rd, Sarnia, ON N7T 7H5
    View profile for Park Derochie Inc.(226) 313-4268

Also serving Sarnia

10 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.

Unranked insulation contractors serving Sarnia
BusinessGoogle ratingDistance
Advanced Industrial Systems Inc5.0★ (1)In Sarnia
Alpha Energy Solutions Inc24 km
C&M Drywall & Interior Systems3.7★ (3)In Sarnia
Druer's Construction37 km
Industrial Covers5.0★ (2)In Sarnia
Lambton Insulation Ltd3.0★ (2)24 km
Nel-Tekk Indl Specialties IncIn Sarnia
Ontario InsulatorsIn Sarnia
Sarnia Spray Foam and Insulation5.0★ (2)In Sarnia
Summit Insulation IncIn Sarnia

How much do insulation contractors cost in Sarnia?

US national ranges converted to CAD, not adjusted for Sarnia. Each row names its basis and the month we checked it.

How much do insulation contractors cost in Sarnia?
JobLowTypicalHighBasisChecked
Attic insulationCA$2,390CA$2,950CA$3,510Per 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 Sarnia insulation contractors

We scored 12 Sarnia 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Sarnia data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

Insulation contractors in Sarnia: frequently asked questions

Who is the best insulation contractor in Sarnia?

By CR Score, the highest-ranked insulation contractor in Sarnia, ON is Canadian Industrial Specialties Ltd with a CR Score of 83/100. It has 3.7★ from 7 Google reviews. Foam All Spray Insulation and Concrete Lifting (#2) and Insultek Inc (#3) follow. We ranked 12 insulation contractors on 8 factors, last updated October 22, 2026.

How many insulation contractors are there in Sarnia?

ContractorsRanked ranks 12 insulation contractors serving Sarnia, ON. 8 of them are based in Sarnia; the rest serve it from nearby towns. Another 10 within 40 km are listed but not ranked yet. Counts are as of October 2026.

Which insulation contractors in Sarnia work on weekends?

1 of 12 ranked insulation contractors post Saturday hours. The highest-ranked open Saturdays is Precision Roofing and Construction (#5). Posted hours are office hours; crews may book weekend jobs separately.

How much does attic insulation cost in Sarnia?

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 Sarnia. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Sarnia insulation contractors have?

The median Google rating among 12 rated insulation contractors in Sarnia is 4.7★, with a median of 8 reviews. Foam All Spray Insulation and Concrete Lifting has the most, 101 reviews, and ranks #2. 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 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Do insulation contractors outside Sarnia count in this ranking?

Yes, if they are within 40 km of the Sarnia 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 Sarnia

  1. October 2026: CR Scores recalculated for 12 insulation contractors serving Sarnia.

More insulation contractors and Sarnia pages

Other trades in Sarnia