59/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 96 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 96 Google reviews
- Hours
- Mon–Sat 7 AM–7 PM · Sun 7 AM–5 PM
Best Insulation Contractors in Glastonbury, CT (2026)
56 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Glastonbury: Eco Energy Guard LLC, CR Score 59/100; 5.0★ from 96 Google reviews; open 7 days a week.
- 10
Best for emergencies (open 24/7): Scalzo Mechanical Insulation, LLC, posts 24/7 hours; ranked #10 of 56.
- 29
Most-reviewed: Homestead Comfort, 787 Google reviews at 4.7★, the most of 56 ranked; ranked #29.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
56 Glastonbury insulation contractors are ranked here by CR Score, from ten published factors. 5 are open 24/7, 32 open Saturdays and 15 open Sundays, based on posted hours. The median Google rating is 4.8★ across 56 rated businesses.
Top 10 insulation contractors in Glastonbury at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Eco Energy Guard LLC | 59 | 5.0★ (96) | Farmington, 15 mi away | Sat · Sun · Evenings | Overall |
| 2 | Koala Insulation of Central Connecticut | 59 | 5.0★ (158) | Cromwell, 4 mi away | — | — |
| 3 | Priority Inc. | 58 | 5.0★ (24) | East Hartford, 2 mi away | Sat · Evenings | — |
| 4 | Hartford Building Company LLC | 57 | 5.0★ (6) | Glastonbury | Sat · Sun | — |
| 5 | JT Energy LLC | 57 | 4.9★ (33) | South Windsor, 6 mi away | Sat | — |
| 6 | Precision | 57 | 5.0★ (23) | Ellington, 11 mi away | Sat · Sun · Evenings | — |
| 7 | Priority Spray Foam | 57 | 5.0★ (23) | Hartford, 6 mi away | Sat · Evenings | — |
| 8 | Koala Insulation of Eastern Connecticut | 57 | 4.9★ (83) | Manchester, 8 mi away | — | — |
| 9 | Fogarty's Home Services | 57 | 4.8★ (168) | Hartford, 19 mi away | Sat | — |
| 10 | Scalzo Mechanical Insulation, LLC | 56 | 5.0★ (3) | Farmington, 6 mi away | 24/7 | Emergencies |
The 56 best insulation contractors in Glastonbury, 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 Cromwell, 4 mi away
59/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 158 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 158 Google reviews
- Hours
- Mon–Fri 8:30 AM–4 PM · Sat–Sun closed
- Address
- 148 Dividend Rd Unit A, Rocky Hill, CT 06067
Based in East Hartford, 2 mi away
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 24 Google reviews
- Hours
- Mon–Sat 7 AM–7 PM · Sun closed
- Address
- 23 Elms Village Dr, East Hartford, CT 06118
Based in Glastonbury
57/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 6 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun 7 AM–3 PM
- Address
- 22 Kreiger Ln, Glastonbury, CT 06033
Based in South Windsor, 6 mi away
57/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 33 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 33 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 8 AM–12 PM · Sun closed
- Address
- 200 Burnham St, South Windsor, CT 06074
#6 Precision
Based in Ellington, 11 mi away
57/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 23 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat 8 AM–6 PM · Sun 8 AM–5 PM
Based in Hartford, 6 mi away
57/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 23 Google reviews
- Hours
- Mon–Sat 7 AM–7 PM · Sun closed
- Address
- 41 Irving St, Hartford, CT 06112
Based in Manchester, 8 mi away
57/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 83 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 83 Google reviews
- Hours
- Mon 8 AM–5 PM · Tue 8 AM–6 PM · Wed 8 AM–5 PM · Thu 8 AM–6 PM · Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 90 Progress Dr, Manchester, CT 06042
Based in Hartford, 19 mi away
57/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.8★ from 168 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 168 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 10 AM–2 PM · Sun closed
Based in Farmington, 6 mi away
56/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 3 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 507 Carlton Ln, Rocky Hill, CT 06067
Based in East Haddam, 16 mi away
56/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.6★ from 43 Google reviews, listed on Google as “Insulation contractor”.
- 4.6★ from 43 Google reviews
- Hours
- Mon–Sun 8 AM–4 PM
- Address
- 247 Old Hartford Rd, Colchester, CT 06415
Based in Cheshire Village, 9 mi away
55/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.2★ from 56 Google reviews, listed on Google as “Insulation contractor”.
- 4.2★ from 56 Google reviews
- Hours
- Mon–Fri 6 AM–5 PM · Sat 7 AM–12 PM · Sun closed
- Address
- 105A Clark Dr, East Berlin, CT 06023
Based in West Hartford, 8 mi away
55/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 36 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun closed
- Address
- 200 Bloomfield Ave #3868, West Hartford, CT 06117
Based in Hebron, 23 mi away
55/100CR ScoreRanked #14 because of its Google rating and review volume: 4.8★ from 521 Google reviews.
- 4.8★ from 521 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 29 Northridge Dr, North Windham, CT 06256
Based in Cromwell, 6 mi away
55/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 11 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 10 AM–2 PM · Sun closed
- Address
- 1275 Cromwell Ave STE B-14, Rocky Hill, CT 06067
#16 Energy Nerds LLC
Based in New Britain, 8 mi away
55/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “Insulation contractor”.
- 4.7★ from 15 Google reviews
- Hours
- Mon–Sat 7 AM–6 PM · Sun closed
- Address
- Chapman St, New Britain, CT 06051
#17 Best
Based in Windsor, 10 mi away
54/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 16 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat 9 AM–3 PM · Sun closed
- Address
- 77 Pierson Ln unit e, Windsor, CT 06095
Based in Farmington, 13 mi away
54/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.4★ from 30 Google reviews, listed on Google as “Insulation contractor”.
- 4.4★ from 30 Google reviews
- Hours
- Mon–Sat 8 AM–6 PM · Sun closed
- Address
- 35 E Main St #359, Avon, CT 06001
Based in Cheshire, 19 mi away
54/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 13 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 60 Creamery Rd, Cheshire, CT 06410
Based in Bethel, 19 mi away
54/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 25 Google reviews
- Hours
- Mon–Sat 7 AM–7 PM · Sun closed
#21 Ari Spray Foam
Based in Hartford, 12 mi away
53/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 4 Google reviews
- Hours
- Mon–Sun 6 AM–7 PM
- Address
- 65 Highland Park Dr, Bloomfield, CT 06002
Based in Darien, 23 mi away
53/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 33 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 9 AM–3 PM · Sun closed
#23 American LLC
Based in Bristol, 17 mi away
53/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 6 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun 7 AM–5 PM
Based in Glastonbury Center, 10 mi away
53/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 16 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun closed
Based in Bridgeport, 17 mi away
53/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 31 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun closed
Insulation contractors ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 56 ranked insulation contractors here; the rest are on their profiles.
Also serving Glastonbury
20 more insulation contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Alex's Energy Insulation Construction LLC | 5.0★ (2) | 14 mi |
| Bright Solutions, LLC | 5.0★ (1) | 6 mi |
| Bright Solutions, LLC | 5.0★ (1) | 12 mi |
| Ceilings Inc. | 3.0★ (1) | 6 mi |
| Charette Drywall Systems LLC | 5.0★ (1) | 22 mi |
| Connecticut Spray Foam LLC | 1.0★ (1) | In Glastonbury |
| Connecticut's Handyman | 5.0★ (1) | 7 mi |
| Energy Resources | 5.0★ (2) | 25 mi |
| Fleming's Property Services LLC | 5.0★ (1) | 15 mi |
| L&C Lucas Finishes Painting serv & Chimney clean Ltd | 4.8★ (5) | In Glastonbury |
| Lantern Electrical, LLC | 3.0★ (2) | In Glastonbury |
| Manchester | 5.0★ (1) | 8 mi |
| Mechanical Insulation By D&R | 5.0★ (1) | 15 mi |
| Millstream Construction | 4.9★ (314) | In Glastonbury |
| Pro Insulation | 1.0★ (1) | 8 mi |
| R-Value Insulation LLC | 5.0★ (1) | 18 mi |
| Rigid Mason Contractors Inc | 5.0★ (1) | 5 mi |
| SE Dryer Vent Cleaning Services Glastonbury, CT | 4.7★ (6) | In Glastonbury |
| Sebastian Spray Foam Insulation LLC | 5.0★ (1) | 22 mi |
| TC Daimyo House Restoration And Attic Insulation Services,Hartford, CT | 5.0★ (2) | 6 mi |
How much do insulation contractors cost in Glastonbury?
National price ranges in USD, not adjusted for Glastonbury. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Attic insulation | $1,700 | $2,100 | $2,500 | Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range | October 2026 |
How we ranked Glastonbury insulation contractors
We scored 56 Glastonbury 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 Glastonbury 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 Glastonbury: frequently asked questions
Who is the best insulation contractor in Glastonbury?
By CR Score, the highest-ranked insulation contractor in Glastonbury, CT is Eco Energy Guard LLC with a CR Score of 59/100. It has 5.0★ from 96 Google reviews. It is open 7 days a week. Koala Insulation of Central Connecticut (#2) and Priority Inc. (#3) follow. We ranked 56 insulation contractors on ten factors, last updated October 22, 2026.
How many insulation contractors are there in Glastonbury?
ContractorsRanked ranks 56 insulation contractors serving Glastonbury, CT. 1 of them is based in Glastonbury; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which insulation contractors in Glastonbury are open 24/7?
5 ranked insulation contractors in Glastonbury post 24/7 hours. The highest-ranked are Scalzo Mechanical Insulation, LLC (#10) and Klaus Larsen Roofing (#14). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which insulation contractors in Glastonbury work on weekends?
32 of 56 ranked insulation contractors post Saturday hours and 15 post Sunday hours. The highest-ranked open Saturdays are Eco Energy Guard LLC (#1), Priority Inc. (#3) and Hartford Building Company LLC (#4). Posted hours are office hours; crews may book weekend jobs separately.
How much does attic insulation cost in Glastonbury?
Attic insulation typically costs $1,700 to $2,500, with $2,100 typical (Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range). This is a national range, not adjusted for Glastonbury. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Glastonbury insulation contractors have?
The median Google rating among 56 rated insulation contractors in Glastonbury is 4.8★, with a median of 18 reviews. Homestead Comfort has the most, 787 reviews, and ranks #29. 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 Glastonbury count in this ranking?
Yes, if they are within 25 mi of the Glastonbury city center, 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 Glastonbury
- October 2026: CR Scores recalculated for 56 insulation contractors serving Glastonbury.
More insulation contractors and Glastonbury pages
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