79 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Westport: Sono Spray Foam Insulation, CR Score 58/100; 4.9★ from 33 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): PNC Spray Foam Insulation in Fairfield County, posts 24/7 hours; ranked #4 of 79.
Most-reviewed: Power Home Remodeling, 3,916 Google reviews at 4.6★, the most of 79 ranked; ranked #41.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
79 Westport insulation contractors are ranked here by CR Score, from ten published factors. 7 are open 24/7, 52 open Saturdays and 22 open Sundays, based on posted hours. The median Google rating is 5.0★ across 79 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Sono Spray Foam Insulation | 58 | 4.9★ (33) | Norwalk, 4 mi away | Sat · Sun · Evenings | Overall |
| 2 | Discount Insulation Company | 56 | 5.0★ (81) | Greenwich, 20 mi away | Sat · Sun · Evenings | — |
| 3 | New England Performance Insulation | 56 | 5.0★ (153) | Milford, 19 mi away | Sat | — |
| 4 | PNC Spray Foam Insulation in Fairfield County | 55 | 5.0★ (4) | Bridgeport, 9 mi away | 24/7 | Emergencies |
| 5 | Cloud9 Spray Foam | 55 | 5.0★ (17) | Norwalk, 5 mi away | Sat · Evenings | — |
| 6 | Foam A Brothers | 54 | 5.0★ (13) | Darien, 12 mi away | Sat · Sun · Evenings | — |
| 7 | Healthy Home Energy & Consulting, Inc. | 54 | 5.0★ (291) | Mahopac, 21 mi away | — | — |
| 8 | Advanced Insulation Milford | 54 | 5.0★ (39) | Milford, 15 mi away | Sat | — |
| 9 | GAD Construction | 54 | 5.0★ (3) | New Canaan, 5 mi away | Sat · Sun · Evenings | — |
| 10 | Home Comfort Practice, Inc. | 54 | 4.9★ (1,222) | Stratford, 11 mi away | Sat | — |
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 trade focus: 4.9★ from 33 Google reviews, listed on Google as “Insulation contractor”.
Based in Greenwich, 20 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 81 Google reviews, listed on Google as “Insulation contractor”.
Based in Milford, 19 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 153 Google reviews, listed on Google as “Insulation contractor”.
Based in Bridgeport, 9 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based in Norwalk, 5 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based in Darien, 12 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based in Mahopac, 21 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 291 Google reviews, listed on Google as “Insulation contractor”.
Based in Milford, 15 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 39 Google reviews, listed on Google as “Insulation contractor”.
Based in New Canaan, 5 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based in Stratford, 11 mi away
Ranked #10 because of its Google rating and review volume: 4.9★ from 1,222 Google reviews.
Based in Fairfield, 6 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 48 Google reviews, listed on Google as “Insulation contractor”.
Based in Trumbull, 11 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based in Port Chester, 19 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 161 Google reviews, listed on Google as “Insulation contractor”.
Based in Bridgeport, 9 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based in Stamford, 11 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based in Stamford, 9 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based in Shelton, 18 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 113 Google reviews, listed on Google as “Insulation contractor”.
Based in Centereach, 24 mi away
Ranked #18 because of its Google rating and trade focus: 4.3★ from 54 Google reviews, listed on Google as “Insulation contractor”.
Based in Trumbull, 13 mi away
Ranked #19 because of its Google rating and review volume: 4.6★ from 3,018 Google reviews.
Based in Stratford, 12 mi away
Ranked #20 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Insulation contractor”.
Based in Darien, 12 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 15 Google reviews, listed on Google as “Insulation contractor”.
Based in Stamford, 10 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based in Bethel, 19 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Insulation contractor”.
Based in Bethel, 19 mi away
Ranked #24 because of its Google rating and trade focus: 4.7★ from 58 Google reviews, listed on Google as “Insulation contractor”.
Based in Port Chester, 19 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 4 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 79 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 |
|---|---|---|
| Attic Systems | 5.0★ (2) | 23 mi |
| Comfort Zone Heating & Air Conditioning | 4.0★ (2) | 22 mi |
| ecotec spray foam | 5.0★ (2) | 18 mi |
| Efficiency Contractor | 5.0★ (2) | 17 mi |
| Everest Insulation | 5.0★ (1) | 9 mi |
| G&G Contractor LLC | 5.0★ (2) | 18 mi |
| Griffin Insulation | 5.0★ (2) | 16 mi |
| Mavericks Foam and Coatings | 5.0★ (1) | 8 mi |
| Norwalk Insulation | 5.0★ (1) | 3 mi |
| odell development | 5.0★ (2) | In Westport |
| Perfection and Advance Drywall LLC - Drywall Installation Contractor, Drywall Covering Service, Metal Framing | 5.0★ (2) | 13 mi |
| SUPREME INTERIOR & EXTERIOR PAINTING | 5.0★ (2) | 19 mi |
| Temp Chek Services, LLC | 5.0★ (2) | 21 mi |
| The Home Insulators of Armonk | 5.0★ (2) | 18 mi |
| The Home Insulators of Briarcliff | 5.0★ (2) | 25 mi |
| The Home Insulators of Port Chester | 5.0★ (2) | 17 mi |
| The Home Insulators of Pound RIdge | 5.0★ (1) | 8 mi |
| The Home Insulators of Somers | 5.0★ (2) | 21 mi |
| TnR Services Inc | 5.0★ (1) | 9 mi |
| UP Ceilings | 5.0★ (1) | In Westport |
National price ranges in USD, not adjusted for Westport. 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 79 Westport 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 Westport 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 |