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ContractorsRanked

Best Insulation Contractors in St. John's, NL (2026)

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

The short answer

  1. 1

    Best overall in St. John's: Island Insulation, CR Score 87/100; 4.7★ from 45 Google reviews; open 24/7.

  2. 3

    Most-reviewed: Greenfoot Energy, 960 Google reviews at 5.0★, the most of 5 ranked; ranked #3.

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

5 St. John's insulation contractors are ranked here by CR Score, from 8 published factors. 1 is open 24/7, 1 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 4.7★ across 5 rated businesses.

Top 5 insulation contractors in St. John's at a glance

Top 5 insulation contractors in St. John's at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Island Insulation874.7★ (45)Conception Bay South, 15 km away24/7Overall
2TOTAL Insulation & Coatings Ltd. / TOTAL InSolutions Ltd.833.7★ (7)St. John's——
3Greenfoot Energy785.0★ (960)Conception Bay South, 13 km away—Most reviews
4Insulation Solutions Inc764.4★ (5)Bay Roberts, 39 km away——
5Scotia Insulations724.7★ (3)Mount Pearl, 12 km away——

The 5 best insulation contractors in St. John's, ranked

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

  1. Ranked #1 in St. John's

    #1 Island Insulation

    Based in Conception Bay South, 15 km away

    87/100CR Score

    Ranked #1 because of its Google rating and availability: 4.7★ from 45 Google reviews, open 24/7.

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

    • 4.7★ from 45 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for Island Insulation(709) 631-3626

  3. #3 Greenfoot Energy

    Based in Conception Bay South, 13 km away

    78/100CR Score

    Ranked #3 because of its Google rating and review volume: 5.0★ from 960 Google reviews, the most Google reviews on this list (960).

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

    • 5.0★ from 960 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    1218 Kenmount Rd, Paradise, NL A1L 1N3
    View profile for Greenfoot Energy(709) 725-6682

  4. #4 Insulation Solutions Inc

    Based in Bay Roberts, 39 km away

    76/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.4★ from 5 Google reviews, listed on Google as “Insulation contractor”.

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

    • 4.4★ from 5 Google reviews
    Address
    29 Main Rd, Upper Island Cove, NL A0A 4E0
    View profile for Insulation Solutions Inc(709) 589-2376

  5. #5 Scotia Insulations

    Based in Mount Pearl, 12 km away

    72/100CR Score

    Ranked #5 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “Insulation contractor”.

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

    • 4.7★ from 3 Google reviews
    Hours
    Mon–Fri 7:30 AM–4:30 PM · Sat–Sun closed
    Address
    134 Clyde Ave, Mount Pearl, NL A1N 4S3
    View profile for Scotia Insulations(709) 747-6688

How much do insulation contractors cost in St. John's?

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

How much do insulation contractors cost in St. John's?
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 St. John's insulation contractors

We scored 5 St. John's 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 St. John's 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 St. John's: frequently asked questions

Who is the best insulation contractor in St. John's?

By CR Score, the highest-ranked insulation contractor in St. John's, NL is Island Insulation with a CR Score of 87/100. It has 4.7★ from 45 Google reviews. It is open 24/7. TOTAL Insulation & Coatings Ltd. / TOTAL InSolutions Ltd. (#2) and Greenfoot Energy (#3) follow. We ranked 5 insulation contractors on 8 factors, last updated October 22, 2026.

How many insulation contractors are there in St. John's?

ContractorsRanked ranks 5 insulation contractors serving St. John's, NL. 1 of them is based in St. John's; the rest serve it from nearby towns. Counts are as of October 2026.

Which insulation contractors in St. John's are open 24/7?

1 ranked insulation contractor in St. John's posts 24/7 hours. The highest-ranked is Island Insulation (#1). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which insulation contractors in St. John's work on weekends?

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

How much does attic insulation cost in St. John's?

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 St. John's. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do St. John's insulation contractors have?

The median Google rating among 5 rated insulation contractors in St. John's is 4.7★, with a median of 7 reviews. Greenfoot Energy has the most, 960 reviews, and ranks #3. 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 St. John's count in this ranking?

Yes, if they are within 40 km of the St. John's 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.

Update log for St. John's

  1. October 2026: CR Scores recalculated for 5 insulation contractors serving St. John's.

More insulation contractors and St. John's pages