24 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in New Gloucester: Seal It Insulation Systems, CR Score 81/100; 4.9★ from 190 Google reviews.
Most-reviewed: Evergreen Home Performance, 101 Google reviews at 4.7★, the most of 24 ranked after Seal It Insulation Systems; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
24 New Gloucester insulation contractors are ranked here by CR Score, from 8 published factors. 4 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 4.8★ across 24 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Seal It Insulation Systems | 81 | 4.9★ (190) | Topsham, 16 mi away | — | Overall |
| 2 | Zampell Refractories | 80 | 4.4★ (5) | Auburn, 5 mi away | — | — |
| 3 | Mattra Inc. | 79 | 4.9★ (61) | Lewiston, 11 mi away | — | — |
| 4 | Simply Pest Solutions | 79 | 4.8★ (30) | Gorham, 18 mi away | Sat | — |
| 5 | Tri-State Insulation Inc. | 78 | 3.2★ (5) | Lewiston, 9 mi away | — | — |
| 6 | Kessler Home Consulting LLC | 77 | 5.0★ (4) | Gorham, 19 mi away | Sat · Sun | — |
| 7 | Evergreen Home Performance | 77 | 4.7★ (101) | Portland, 19 mi away | — | Most reviews |
| 8 | Horizon Homes | 76 | 4.9★ (62) | Westbrook, 22 mi away | — | — |
| 9 | Itchy & Scratchy Insulators | 76 | 4.1★ (17) | Chester, 17 mi away | Sat | — |
| 10 | All In One Insulation | 76 | 4.8★ (18) | Gorham, 11 mi away | — | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.9★ from 190 Google reviews, the most Google reviews on this list (190).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Auburn, 5 mi away
Ranked #2 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.
Based in Lewiston, 11 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 61 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gorham, 18 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 30 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lewiston, 9 mi away
Ranked #5 because of its Google rating and trade focus: 3.2★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Gorham, 19 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Portland, 19 mi away
Ranked #7 because of its Google rating and trade focus: 4.7★ from 101 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Westbrook, 22 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 62 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chester, 17 mi away
Ranked #9 because of its Google rating and trade focus: 4.1★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gorham, 11 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in New Gloucester
Ranked #11 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Holden, 17 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Portland, 18 mi away
Ranked #13 because of its Google rating and trade focus: 4.7★ from 25 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Portland, 17 mi away
Ranked #14 because of its Google rating and trade focus: 4.4★ from 46 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lewiston, 9 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 6 of 8 factors; credentials and recency not yet collected.
Based in Auburn, 12 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Auburn, 13 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Westbrook, 19 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Auburn, 23 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Yarmouth, 13 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Yarmouth, 11 mi away
Ranked #21 because of its Google rating and trade focus: 3.5★ from 35 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Portland, 17 mi away
Ranked #22 because of its Google rating and trade focus: 4.1★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gorham, 18 mi away
Ranked #23 because of its Google rating and trade focus: 4.1★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gorham, 14 mi away
Ranked #24 because of its Google rating and trade focus: 2.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
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 |
|---|---|---|
| Black Bear Insulation L.L.C | 15 mi | |
| Damon Insulation Co | 8 mi | |
| Foam Pro Inc | 5.0★ (1) | 10 mi |
| G & G Insulation Co | 5.0★ (2) | In New Gloucester |
| GDC Insulation & Services | 5.0★ (1) | 17 mi |
| Grey Ghost Construction | 4 mi | |
| Hollis Construction Inc. | 5.0★ (1) | 13 mi |
| Infinity Energy Solutions | 5.0★ (1) | 24 mi |
| MidMaine Blower Door LLC | 5.0★ (1) | 14 mi |
| New England Spray Foam Insulation | 11 mi | |
| Northeast Insulation Services | 10 mi | |
| Phoam Insulation | 14 mi | |
| Portland Insulation Inc | 5.0★ (2) | In New Gloucester |
| Statewide Foam & Coatings Inc. | 18 mi | |
| Steve's shop | 14 mi | |
| Thermal-Lock Inc | In New Gloucester | |
| Vertex Mechanical Insulation LLC | 17 mi | |
| Victura Hemp | 17 mi | |
| Weather Seal Spray Foam Solutions | 5.0★ (1) | 14 mi |
| Weatherize Northeast | 5.0★ (1) | 10 mi |
National price ranges in USD, not adjusted for New Gloucester. 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 24 New Gloucester 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.
| Factor | Weight | Computed from | In New Gloucester data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |