56 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Glastonbury Center: Koala Insulation of Central Connecticut, CR Score 59/100; 5.0★ from 158 Google reviews.
Best for emergencies (open 24/7): Scalzo Mechanical Insulation, LLC, posts 24/7 hours; ranked #10 of 56.
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 Center 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.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Koala Insulation of Central Connecticut | 59 | 5.0★ (158) | Cromwell, 4 mi away | — | Overall |
| 2 | Eco Energy Guard LLC | 59 | 5.0★ (96) | Farmington, 16 mi away | Sat · Sun · Evenings | — |
| 3 | Priority Inc. | 58 | 5.0★ (24) | East Hartford, 3 mi away | Sat · Evenings | — |
| 4 | Hartford Building Company LLC | 57 | 5.0★ (6) | Glastonbury, 1 mi away | Sat · Sun | — |
| 5 | Precision | 57 | 5.0★ (23) | Ellington, 12 mi away | Sat · Sun · Evenings | — |
| 6 | JT Energy LLC | 57 | 4.9★ (33) | South Windsor, 7 mi away | Sat | — |
| 7 | Koala Insulation of Eastern Connecticut | 56 | 4.9★ (83) | Manchester, 9 mi away | — | — |
| 8 | Priority Spray Foam | 56 | 5.0★ (23) | Hartford, 7 mi away | Sat · Evenings | — |
| 9 | Fogarty's Home Services | 56 | 4.8★ (168) | Hartford, 20 mi away | Sat | — |
| 10 | Scalzo Mechanical Insulation, LLC | 56 | 5.0★ (3) | Farmington, 6 mi away | 24/7 | Emergencies |
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.
Ranked #1 in Glastonbury Center
Based in Cromwell, 4 mi away
Ranked #1 because of its Google rating and trade focus: 5.0★ from 158 Google reviews, listed on Google as “Insulation contractor”.
Based in Farmington, 16 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 96 Google reviews, listed on Google as “Insulation contractor”.
Based in East Hartford, 3 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based in Glastonbury, 1 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based in Ellington, 12 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based in South Windsor, 7 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 33 Google reviews, listed on Google as “Insulation contractor”.
Based in Manchester, 9 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 83 Google reviews, listed on Google as “Insulation contractor”.
Based in Hartford, 7 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based in Hartford, 20 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 168 Google reviews, listed on Google as “Insulation contractor”.
Based in Farmington, 6 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based in East Haddam, 16 mi away
Ranked #11 because of its Google rating and trade focus: 4.6★ from 43 Google reviews, listed on Google as “Insulation contractor”.
Based in Glastonbury Center
Ranked #12 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based in Cheshire Village, 8 mi away
Ranked #13 because of its Google rating and trade focus: 4.2★ from 56 Google reviews, listed on Google as “Insulation contractor”.
Based in Hebron, 22 mi away
Ranked #14 because of its Google rating and review volume: 4.8★ from 521 Google reviews.
Based in West Hartford, 9 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “Insulation contractor”.
Based in Cromwell, 6 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based in New Britain, 9 mi away
Ranked #17 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “Insulation contractor”.
Based in Windsor, 11 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based in Cheshire, 19 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based in Farmington, 14 mi away
Ranked #20 because of its Google rating and trade focus: 4.4★ from 30 Google reviews, listed on Google as “Insulation contractor”.
Based in Bethel, 20 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Insulation contractor”.
Based in Darien, 22 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Insulation contractor”.
Based in Hartford, 13 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based in Bristol, 16 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based in Bridgeport, 16 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Insulation contractor”.
#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.
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) | 13 mi |
| Basement Entry Systems | 1.0★ (1) | 25 mi |
| Basic Dryer Vent Cleaning Services Glastonbury, CT | 5.0★ (4) | In Glastonbury Center |
| Bright Solutions, LLC | 5.0★ (1) | 7 mi |
| Bright Solutions, LLC | 5.0★ (1) | 13 mi |
| Ceilings Inc. | 3.0★ (1) | 7 mi |
| Charette Drywall Systems LLC | 5.0★ (1) | 22 mi |
| Connecticut Spray Foam LLC | 1.0★ (1) | 1 mi |
| Connecticut's Handyman | 5.0★ (1) | 7 mi |
| Fleming's Property Services LLC | 5.0★ (1) | 16 mi |
| Manchester | 5.0★ (1) | 8 mi |
| Mechanical Insulation By D&R | 5.0★ (1) | 15 mi |
| Napolitano Roofing | 4.5★ (24) | In Glastonbury Center |
| Pro Insulation | 1.0★ (1) | In Glastonbury Center |
| Quality Insulation LLC | 5.0★ (1) | 23 mi |
| R-Value Insulation LLC | 5.0★ (1) | 17 mi |
| Rigid Mason Contractors Inc | 5.0★ (1) | 6 mi |
| RRJ Dryer Vent Cleaning Services Glastonbury, CT | 5.0★ (1) | In Glastonbury Center |
| Sebastian Spray Foam Insulation LLC | 5.0★ (1) | 22 mi |
| TC Daimyo House Restoration And Attic Insulation Services,Hartford, CT | 5.0★ (2) | 7 mi |
National price ranges in USD, not adjusted for Glastonbury Center. 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 |
We scored 56 Glastonbury Center 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 Center 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 |