15 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Conning Towers-Nautilus Park: Anchor Home Inspection, CR Score 62/100; 5.0★ from 611 Google reviews; open evenings.
Best for emergencies (open 24/7): Klaus Larsen Roofing, posts 24/7 hours; ranked #3 of 15.
Most-reviewed: Klaus Larsen Roofing, 521 Google reviews at 4.8★, the most of 15 ranked after Anchor Home Inspection; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
15 Conning Towers-Nautilus Park insulation contractors are ranked here by CR Score, from ten published factors. 2 are open 24/7, 6 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.7★ across 15 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Anchor Home Inspection | 62 | 5.0★ (611) | East Haddam, 8 mi away | Evenings | Overall |
| 2 | Best Home Performance | 55 | 4.6★ (43) | East Haddam, 20 mi away | Sat · Sun | — |
| 3 | Klaus Larsen Roofing | 55 | 4.8★ (521) | Hebron, 25 mi away | 24/7 | Emergencies, Most reviews |
| 4 | Nealon Insulation of Connecticut | 53 | 5.0★ (66) | Guilford, 23 mi away | — | — |
| 5 | A/Z Corporation | 52 | 4.5★ (11) | Groton, 11 mi away | — | — |
| 6 | Nescor | 52 | 4.0★ (4) | Old Saybrook, 19 mi away | Sat · Sun · Evenings | — |
| 7 | C & R Insulation Inc | 51 | 4.6★ (18) | Hebron, 18 mi away | — | — |
| 8 | Quality Insulation of Eastern CT | 51 | 3.7★ (26) | Norwich, 13 mi away | — | — |
| 9 | Anchor Insulation | 51 | 4.3★ (9) | Norwich, 13 mi away | — | — |
| 10 | John Wills Painting & Power Washing Co., LLC | 49 | 4.9★ (53) | East Haddam, 21 mi away | Sat · Evenings | — |
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: 5.0★ from 611 Google reviews, the most in Conning Towers-Nautilus Park.
Based in East Haddam, 20 mi away
Ranked #2 because of its Google rating and trade focus: 4.6★ from 43 Google reviews, listed on Google as “Insulation contractor”.
Based in Hebron, 25 mi away
Ranked #3 because of its Google rating and review volume: 4.8★ from 521 Google reviews.
Based in Guilford, 23 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 66 Google reviews, listed on Google as “Insulation contractor”.
Based in Groton, 11 mi away
Ranked #5 because of its Google rating and trade focus: 4.5★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based in Old Saybrook, 19 mi away
Ranked #6 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based in Hebron, 18 mi away
Ranked #7 because of its Google rating and trade focus: 4.6★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based in Norwich, 13 mi away
Ranked #8 because of its Google rating and trade focus: 3.7★ from 26 Google reviews, listed on Google as “Insulation contractor”.
Based in Norwich, 13 mi away
Ranked #9 because of its Google rating and trade focus: 4.3★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based in East Haddam, 21 mi away
Ranked #10 because of its Google rating and review volume: 4.9★ from 53 Google reviews.
Based in East Haddam, 18 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based in Norwich, 16 mi away
Ranked #12 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
Based in East Haddam, 19 mi away
Ranked #13 because of its Google rating and review volume: 4.7★ from 82 Google reviews.
Based in Groton, 9 mi away
Ranked #14 because of its Google rating and trade focus: 4.6★ from 16 Google reviews, listed on Google as “Construction company”.
Based in Bridgeport, 21 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “General contractor”.
10 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 |
|---|---|---|
| Alex's Energy Insulation Construction LLC | 5.0★ (2) | 23 mi |
| ASW Construction | 22 mi | |
| Capalbo's Waste Service | 15 mi | |
| Green Energy Insulation & Chimney Caps and Covers ltd | 19 mi | |
| Mega Innovations LLC | 21 mi | |
| R & R Insulators LLC | 16 mi | |
| R-Value Insulation LLC | 5.0★ (1) | 19 mi |
| R-Value Insulation LLC | 9 mi | |
| Superior Seamless Solutions | In Conning Towers-Nautilus Park | |
| The Superior Group LLC | 5.0★ (1) | In Conning Towers-Nautilus Park |
National price ranges in USD, not adjusted for Conning Towers-Nautilus Park. 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 15 Conning Towers-Nautilus Park 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 Conning Towers-Nautilus Park 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 |