88 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Darien: Sono Spray Foam Insulation, CR Score 83/100; 4.9★ from 33 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Innovative Air Solutions Inc., posts 24/7 hours; ranked #5 of 88.
Most-reviewed: EcoShield Pest Solutions, 5,457 Google reviews at 4.8★, the most of 88 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
88 Darien insulation contractors are ranked here by CR Score, from 8 published factors. 10 are open 24/7, 67 open Saturdays and 36 open Sundays, based on posted hours. The median Google rating is 5.0★ across 88 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Sono Spray Foam Insulation | 83 | 4.9★ (33) | Norwalk, 4 mi away | Sat · Sun · Evenings | Overall |
| 2 | Foam A Brothers | 83 | 5.0★ (13) | Darien | Sat · Sun · Evenings | — |
| 3 | Discount Insulation Company | 82 | 5.0★ (81) | Greenwich, 16 mi away | Sat · Sun · Evenings | — |
| 4 | EcoShield Pest Solutions | 82 | 4.8★ (5,457) | Hicksville, 22 mi away | Sat | Most reviews |
| 5 | Innovative Air Solutions Inc. | 81 | 4.9★ (976) | Larchmont, 22 mi away | 24/7 | Emergencies |
| 6 | Right Way Insulation | 81 | 5.0★ (33) | Darien | Sat | — |
| 7 | Elite Foam Insulation & Exteriors | 81 | 5.0★ (7) | Stamford, 4 mi away | Sat · Sun · Evenings | — |
| 8 | Energy Management Solutions | 81 | 4.9★ (171) | Valley Cottage, 25 mi away | Sat · Sun · Evenings | — |
| 9 | Pro Legacy Corp | 80 | 5.0★ (100) | Greenburgh, 13 mi away | 24/7 | — |
| 10 | Nu-Way Insulation | 80 | 4.9★ (56) | Larchmont, 18 mi away | Sat · Sun | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 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 Darien
Ranked #2 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based in Greenwich, 16 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 81 Google reviews, listed on Google as “Insulation contractor”.
Based in Hicksville, 22 mi away
Ranked #4 because of its Google rating and review volume: 4.8★ from 5,457 Google reviews, the most Google reviews on this list (5,457).
Based in Larchmont, 22 mi away
Ranked #5 because of its Google rating and availability: 4.9★ from 976 Google reviews, open 24/7.
Based in Darien
Ranked #6 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Insulation contractor”.
Based in Stamford, 4 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based in Valley Cottage, 25 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 171 Google reviews, listed on Google as “Insulation contractor”.
Based in Greenburgh, 13 mi away
Ranked #9 because of its Google rating and availability: 5.0★ from 100 Google reviews, open 24/7.
Based in Larchmont, 18 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 56 Google reviews, listed on Google as “Insulation contractor”.
Based in Centereach, 22 mi away
Ranked #11 because of its Google rating and availability: 4.3★ from 54 Google reviews, open 24/7.
Based in Port Chester, 12 mi away
Ranked #12 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
Based in Norwalk, 2 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based in Mahopac, 24 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 262 Google reviews, listed on Google as “Insulation contractor”.
Based in Greenburgh, 16 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Insulation contractor”.
Based in Darien
Ranked #16 because of its Google rating and trade focus: 4.9★ from 15 Google reviews, listed on Google as “Insulation contractor”.
Based in Stamford, 3 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based in Stamford, 4 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based in Mahopac, 24 mi away
Ranked #19 because of its Google rating and availability: 4.7★ from 420 Google reviews, open 24/7.
Based in New Canaan, 12 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based in Bridgeport, 16 mi away
Ranked #21 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
Based in Port Chester, 12 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 161 Google reviews, listed on Google as “Insulation contractor”.
Based in Yonkers, 23 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based in Bridgeport, 16 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based in Greenburgh, 15 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
National price ranges in USD, not adjusted for Darien. 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 88 Darien 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 Darien 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 |