65 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Portland: 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 #5 of 65.
Most-reviewed: Homestead Comfort, 787 Google reviews at 4.7★, the most of 65 ranked; ranked #44.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
65 Portland insulation contractors are ranked here by CR Score, from ten published factors. 4 are open 24/7, 36 open Saturdays and 15 open Sundays, based on posted hours. The median Google rating is 4.9★ across 65 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Koala Insulation of Central Connecticut | 59 | 5.0★ (158) | Cromwell, 6 mi away | — | Overall |
| 2 | Eco Energy Guard LLC | 58 | 5.0★ (96) | Farmington, 19 mi away | Sat · Sun · Evenings | — |
| 3 | EcoSmart Home Services | 56 | 4.2★ (56) | Cheshire Village, 5 mi away | Sat | — |
| 4 | Best Home Performance | 56 | 4.6★ (43) | East Haddam, 15 mi away | Sat · Sun | — |
| 5 | Scalzo Mechanical Insulation, LLC | 56 | 5.0★ (3) | Farmington, 7 mi away | 24/7 | Emergencies |
| 6 | AMP'd Enterprises LLC | 55 | 4.9★ (78) | Branford, 20 mi away | Sat · Evenings | — |
| 7 | Priority Inc. | 55 | 5.0★ (24) | East Hartford, 11 mi away | Sat · Evenings | — |
| 8 | Extreme Spray Foam of Hartford | 55 | 5.0★ (16) | Glastonbury Center, 1 mi away | — | — |
| 9 | CT Spray Foam Insulation LLC | 55 | 5.0★ (13) | Cheshire, 13 mi away | Sat · Sun · Evenings | — |
| 10 | NexGen Energy LLC | 55 | 5.0★ (11) | Cromwell, 5 mi away | Sat | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 158 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Farmington, 19 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 on 8 of 10 factors; credentials and recency not yet collected.
Based in Cheshire Village, 5 mi away
Ranked #3 because of its Google rating and trade focus: 4.2★ from 56 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Haddam, 15 mi away
Ranked #4 because of its Google rating and trade focus: 4.6★ from 43 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Farmington, 7 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Branford, 20 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 78 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Hartford, 11 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Glastonbury Center, 1 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cheshire, 13 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cromwell, 5 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bristol, 8 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Darien, 15 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bridgeport, 8 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cheshire, 6 mi away
Ranked #14 because of its Google rating and trade focus: 4.3★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Glastonbury, 10 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hartford, 14 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
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 on 8 of 10 factors; credentials and recency not yet collected.
Based in South Windsor, 16 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 33 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ellington, 21 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Manchester, 17 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 83 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ansonia, 8 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wallingford, 11 mi away
Ranked #22 because of its Google rating and trade focus: 4.3★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Bethel, 19 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wallingford, 13 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bethel, 15 mi away
Ranked #25 because of its Google rating and trade focus: 3.7★ from 25 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#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 65 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) | 15 mi |
| Basement Entry Systems | 1.0★ (1) | 16 mi |
| Bright Solutions, LLC | 5.0★ (1) | 13 mi |
| Bright Solutions, LLC | 5.0★ (1) | 21 mi |
| Ceilings Inc. | 3.0★ (1) | 12 mi |
| Charette Drywall Systems LLC | 5.0★ (1) | 21 mi |
| Connecticut Spray Foam LLC | 1.0★ (1) | 9 mi |
| Connecticut's Handyman | 5.0★ (1) | 13 mi |
| Energy Resources | 5.0★ (2) | 24 mi |
| Green Star Energy Solutions | 5.0★ (1) | 21 mi |
| Manchester | 5.0★ (1) | 16 mi |
| Mechanical Insulation By D&R | 5.0★ (1) | 7 mi |
| Pro Insulation | 1.0★ (1) | 10 mi |
| Quality Insulation LLC | 5.0★ (1) | 14 mi |
| R-Value Insulation LLC | 5.0★ (1) | 13 mi |
| Rigid Mason Contractors Inc | 5.0★ (1) | 14 mi |
| S- WBB Dryer Vent Cleaning Services Portland, CT | 4.7★ (12) | In Portland |
| Sebastian Spray Foam Insulation LLC | 5.0★ (1) | 15 mi |
| TC Daimyo House Restoration And Attic Insulation Services,Hartford, CT | 5.0★ (2) | 15 mi |
| Top Notch Home Solution, LLC | 5.0★ (1) | 20 mi |
National price ranges in USD, not adjusted for Portland. 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 65 Portland 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 Portland 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 |