62/100CR Score
Ranked #1 because of its Google rating and review volume: 4.7★ from 101 Google reviews, the most in Portland.
- 4.7★ from 101 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 190 Riverside St #2A, Portland, ME 04103
Best Insulation Contractors in Portland, ME (2026)
18 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Portland: Evergreen Home Performance, CR Score 62/100; 4.7★ from 101 Google reviews.
- 2
Most-reviewed: Horizon Homes, 62 Google reviews at 4.9★, the most of 18 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
18 Portland 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 18 rated businesses.
Top 10 insulation contractors in Portland at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Evergreen Home Performance | 62 | 4.7★ (101) | Portland | — | Overall |
| 2 | Horizon Homes | 60 | 4.9★ (62) | Westbrook, 5 mi away | — | Most reviews |
| 3 | Northeast Spray Insulation | 58 | 4.4★ (46) | Portland | — | — |
| 4 | Southern Maine Spray Insulation | 58 | 4.7★ (25) | Portland | — | — |
| 5 | Anderson Insulation of Maine | 56 | 4.8★ (38) | Saco, 13 mi away | — | — |
| 6 | Casco Bay Insulation Inc. | 56 | 5.0★ (18) | Westbrook, 4 mi away | — | — |
| 7 | Simply Pest Solutions | 56 | 4.8★ (30) | Gorham, 19 mi away | Sat | — |
| 8 | Builders Installed Products Maine | 55 | 4.1★ (13) | Portland | — | — |
| 9 | Kessler Home Consulting LLC | 55 | 5.0★ (4) | Gorham, 9 mi away | Sat · Sun | — |
| 10 | All In One Insulation | 54 | 4.8★ (18) | Gorham, 12 mi away | — | — |
The 18 best insulation contractors in Portland, 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 Westbrook, 5 mi away
60/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 62 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 62 Google reviews
- Hours
- Mon–Fri 7:30 AM–4 PM · Sat–Sun closed
- Address
- 865 Spring St, Westbrook, ME 04092
Based in Portland
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.4★ from 46 Google reviews, listed on Google as “Insulation contractor”.
- 4.4★ from 46 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 511 Riverside Industrial Pkwy, Portland, ME 04103
Based in Portland
58/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.7★ from 25 Google reviews, listed on Google as “Insulation contractor”.
- 4.7★ from 25 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun closed
- Address
- 21 Tee Dr, Portland, ME 04103
Based in Saco, 13 mi away
56/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 38 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 38 Google reviews
- Hours
- Mon–Fri 6 AM–5 PM · Sat–Sun closed
- Address
- 72 Industrial Park Rd, Saco, ME 04072
Based in Westbrook, 4 mi away
56/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 18 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 84D Warren Ave, Westbrook, ME 04092
Based in Gorham, 19 mi away
56/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.8★ from 30 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 30 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat 10 AM–3 PM · Sun closed
- Address
- Richville Rd, Standish, ME 04084
Based in Portland
55/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.1★ from 13 Google reviews, listed on Google as “Insulation contractor”.
- 4.1★ from 13 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun closed
- Address
- 515 Riverside Industrial Pkwy, Portland, ME 04103
Based in Gorham, 9 mi away
55/100CR ScoreRanked #9 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 8 AM–5 PM
Based in Gorham, 12 mi away
54/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 18 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun closed
Based in Yarmouth, 10 mi away
54/100CR ScoreRanked #11 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–Fri 7:30 AM–4 PM · Sat–Sun closed
- Address
- 305 US-1, Yarmouth, ME 04096
Based in Yarmouth, 11 mi away
53/100CR ScoreRanked #12 because of its Google rating and trade focus: 3.5★ from 35 Google reviews, listed on Google as “Insulation contractor”.
- 3.5★ from 35 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 65 Downeast Dr, Yarmouth, ME 04096
Based in Auburn, 13 mi away
53/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 12 Google reviews
- Hours
- Mon–Fri 8 AM–3 PM · Sat–Sun closed
Based in Gorham, 15 mi away
51/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.1★ from 11 Google reviews, listed on Google as “Insulation contractor”.
- 4.1★ from 11 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 20 Fort Hill Rd, Standish, ME 04084
Based in Gorham, 11 mi away
50/100CR ScoreRanked #15 because of its Google rating and trade focus: 2.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
- 2.0★ from 6 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 231 Roosevelt Trail, Windham, ME 04062
Based in New Gloucester, 19 mi away
49/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 5 Google reviews
- Hours
- Mon–Fri 7 AM–4 PM · Sat–Sun closed
- Address
- 89 Lewiston Rd, New Gloucester, ME 04260
Based in Auburn, 24 mi away
49/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 8 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun closed
#18 HeatMizer
Based in Lebanon, 11 mi away
44/100CR ScoreRanked #18 because of its Google rating and trade focus: 3.7★ from 6 Google reviews, listed on Google as “HVAC contractor”.
- 3.7★ from 6 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
Also serving Portland
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) | 11 mi |
| Atlas Property Serrvices LLC. | In Portland | |
| Black Bear Insulation L.L.C | 12 mi | |
| Black Bear Insulation LLC | 16 mi | |
| Colonial Insulation & Fireproofing | 14 mi | |
| Cozy Homes Insulation | 14 mi | |
| Dan Kolbert Building | In Portland | |
| Energy Audits Ltd. | In Portland | |
| G & G Insulation Co | 5.0★ (2) | 22 mi |
| GSD Home Improvement | 5.0★ (1) | In Portland |
| High Efficiency Foam | 5 mi | |
| Hunter Panels | 5.0★ (3) | In Portland |
| Install Polyiso | In Portland | |
| MidMaine Blower Door LLC | 5.0★ (1) | 16 mi |
| Only Heat Pumps Maine | 4.9★ (55) | In Portland |
| Pelletier Insulation LLC | 5.0★ (2) | 22 mi |
| Portland Insulation Inc | 5.0★ (2) | 19 mi |
| Solarize Window Insulators | 5.0★ (1) | 22 mi |
| Statewide Foam & Coatings Inc. | 3 mi | |
| Weather Seal Spray Foam Solutions | 5.0★ (1) | 10 mi |
How much do insulation contractors cost in Portland?
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 |
How we ranked Portland insulation contractors
We scored 18 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 |
Insulation contractors in Portland: frequently asked questions
Who is the best insulation contractor in Portland?
By CR Score, the highest-ranked insulation contractor in Portland, ME is Evergreen Home Performance with a CR Score of 62/100. It has 4.7★ from 101 Google reviews. Horizon Homes (#2) and Northeast Spray Insulation (#3) follow. We ranked 18 insulation contractors on ten factors, last updated October 22, 2026.
How many insulation contractors are there in Portland?
ContractorsRanked ranks 18 insulation contractors serving Portland, ME. 4 of them are based in Portland; 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 Portland work on weekends?
2 of 18 ranked insulation contractors post Saturday hours and 1 post Sunday hours. The highest-ranked open Saturdays are Simply Pest Solutions (#7) and Kessler Home Consulting LLC (#9). Posted hours are office hours; crews may book weekend jobs separately.
How much does attic insulation cost in Portland?
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 Portland. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Portland insulation contractors have?
The median Google rating among 18 rated insulation contractors in Portland is 4.8★, with a median of 16 reviews. Evergreen Home Performance has the most, 101 reviews, and ranks #1. 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 Portland count in this ranking?
Yes, if they are within 25 mi of the Portland 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.
Can insulation contractors pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Portland
- October 2026: CR Scores recalculated for 18 insulation contractors serving Portland.
More insulation contractors and Portland pages
Insulation contractors near Portland
- Insulation contractors in South Portland, ME17 ranked
- Insulation contractors in South Portland Gardens, ME17 ranked
- Insulation contractors in Westbrook, ME17 ranked
- Insulation contractors in West Scarborough, ME18 ranked
- Insulation contractors in Gorham, ME19 ranked
- Insulation contractors in Yarmouth, ME23 ranked
- Insulation contractors in Old Orchard Beach, ME18 ranked
- Insulation contractors in Buxton, ME20 ranked
- Insulation contractors in Saco, ME18 ranked
- Insulation contractors in Biddeford, ME18 ranked
Other trades in Portland
- Roofers in Portland150 ranked
- Plumbers in Portland113 ranked
- Electricians in Portland113 ranked
- HVAC contractors in Portland167 ranked
- General contractors in Portland136 ranked
- Painters in Portland68 ranked
- Landscapers in Portland91 ranked
- Handymen in Portland44 ranked
- Kitchen remodelers in Portland58 ranked
- Bathroom remodelers in Portland52 ranked
- Flooring contractors in Portland56 ranked
- Tile installers in Portland16 ranked
- Drywall contractors in Portland7 ranked
- Concrete contractors in Portland28 ranked
- Fence contractors in Portland18 ranked
- Deck builders in Portland32 ranked
- Siding contractors in Portland61 ranked
- Window installers in Portland51 ranked
- Gutter installers in Portland36 ranked
- Solar installers in Portland26 ranked
- Garage door repair companies in Portland18 ranked
- Foundation repair companies in Portland20 ranked
- Tree services in Portland75 ranked
- Masonry contractors in Portland54 ranked
- Water damage restoration companies in Portland54 ranked
- Home builders in Portland96 ranked
- Demolition contractors in Portland23 ranked
- All contractors in Portland