17 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in South Portland Gardens: Evergreen Home Performance, CR Score 61/100; 4.7★ from 101 Google reviews.
Most-reviewed: Horizon Homes, 62 Google reviews at 4.9★, the most of 17 ranked after Evergreen Home Performance; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
17 South Portland Gardens insulation contractors are ranked here by CR Score, from ten published factors. 2 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 4.8★ across 17 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Evergreen Home Performance | 61 | 4.7★ (101) | Portland, 3 mi away | — | Overall |
| 2 | Horizon Homes | 60 | 4.9★ (62) | Westbrook, 2 mi away | — | Most reviews |
| 3 | Northeast Spray Insulation | 57 | 4.4★ (46) | Portland, 5 mi away | — | — |
| 4 | Anderson Insulation of Maine | 57 | 4.8★ (38) | Saco, 10 mi away | — | — |
| 5 | Southern Maine Spray Insulation | 57 | 4.7★ (25) | Portland, 5 mi away | — | — |
| 6 | Casco Bay Insulation Inc. | 56 | 5.0★ (18) | Westbrook, 3 mi away | — | — |
| 7 | Simply Pest Solutions | 56 | 4.8★ (30) | Gorham, 17 mi away | Sat | — |
| 8 | Kessler Home Consulting LLC | 55 | 5.0★ (4) | Gorham, 7 mi away | Sat · Sun | — |
| 9 | Builders Installed Products Maine | 54 | 4.1★ (13) | Portland, 5 mi away | — | — |
| 10 | All In One Insulation | 54 | 4.8★ (18) | Gorham, 13 mi away | — | — |
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 because of its Google rating and review volume: 4.7★ from 101 Google reviews, the most in South Portland Gardens.
Based in Westbrook, 2 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 62 Google reviews, listed on Google as “Insulation contractor”.
Based in Portland, 5 mi away
Ranked #3 because of its Google rating and trade focus: 4.4★ from 46 Google reviews, listed on Google as “Insulation contractor”.
Based in Saco, 10 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 38 Google reviews, listed on Google as “Insulation contractor”.
Based in Portland, 5 mi away
Ranked #5 because of its Google rating and trade focus: 4.7★ from 25 Google reviews, listed on Google as “Insulation contractor”.
Based in Westbrook, 3 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based in Gorham, 17 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 30 Google reviews, listed on Google as “Insulation contractor”.
Based in Gorham, 7 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based in Portland, 5 mi away
Ranked #9 because of its Google rating and trade focus: 4.1★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based in Gorham, 13 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 in Yarmouth, 12 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based in Yarmouth, 14 mi away
Ranked #12 because of its Google rating and trade focus: 3.5★ from 35 Google reviews, listed on Google as “Insulation contractor”.
Based in Auburn, 16 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Insulation contractor”.
Based in Gorham, 13 mi away
Ranked #14 because of its Google rating and trade focus: 4.1★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based in Gorham, 10 mi away
Ranked #15 because of its Google rating and trade focus: 2.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based in New Gloucester, 20 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based in Lebanon, 9 mi away
Ranked #17 because of its Google rating and trade focus: 3.7★ from 6 Google reviews, listed on Google as “HVAC contractor”.
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 |
|---|---|---|
| Accurate Insulation Upgraded LLC | 5.0★ (2) | 8 mi |
| Atlas Property Serrvices LLC. | 3 mi | |
| Black Bear Insulation L.L.C | 11 mi | |
| Black Bear Insulation LLC | 13 mi | |
| Colonial Insulation & Fireproofing | 11 mi | |
| Cozy Homes Insulation | 12 mi | |
| G & G Insulation Co | 5.0★ (2) | 23 mi |
| Grey Ghost Construction | 23 mi | |
| High Efficiency Foam | 4 mi | |
| Mainely Insulation | 15 mi | |
| MidMaine Blower Door LLC | 5.0★ (1) | 15 mi |
| New England Spray Foam Insulation | 25 mi | |
| Northeast Insulation Services | 19 mi | |
| Pelletier Insulation LLC | 5.0★ (2) | 19 mi |
| Portland Insulation Inc | 5.0★ (2) | 20 mi |
| Solarize Window Insulators | 5.0★ (1) | 19 mi |
| Statewide Foam & Coatings Inc. | 5 mi | |
| Thermal-Lock Inc | 20 mi | |
| Twin City Builders & Insulator | 14 mi | |
| Weather Seal Spray Foam Solutions | 5.0★ (1) | 13 mi |
National price ranges in USD, not adjusted for South Portland Gardens. 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 17 South Portland Gardens 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 South Portland Gardens 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 |