89 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Shrewsbury: Energy Protectors, CR Score 58/100; 5.0★ from 330 Google reviews; open Sundays until 5 PM.
Best for emergencies (open 24/7): Efficient Buildings LLC, posts 24/7 hours; ranked #2 of 89.
Most-reviewed: Power Home Remodeling, 4,159 Google reviews at 4.7★, the most of 89 ranked; ranked #31.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
89 Shrewsbury insulation contractors are ranked here by CR Score, from ten published factors. 5 are open 24/7, 45 open Saturdays and 8 open Sundays, based on posted hours. The median Google rating is 4.9★ across 89 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Energy Protectors | 58 | 5.0★ (330) | Spencer, 14 mi away | Sun | Overall |
| 2 | Efficient Buildings LLC | 56 | 5.0★ (10) | Hudson, 9 mi away | 24/7 | Emergencies |
| 3 | Northeast Home & Energy | 56 | 4.9★ (225) | Grafton, 5 mi away | 24/7 | — |
| 4 | Endless Energy | 54 | 4.7★ (513) | Marlborough, 7 mi away | Sat · Sun · Evenings | — |
| 5 | Green Idea Insulation Corp | 54 | 4.7★ (14) | Auburn, 5 mi away | Sat | — |
| 6 | OnTime Insulation Services Inc. | 54 | 5.0★ (103) | Holliston, 15 mi away | — | — |
| 7 | Colt Home Services | 54 | 5.0★ (278) | Waltham, 25 mi away | Evenings | — |
| 8 | Freedom Insulation | 53 | 4.9★ (40) | Billerica, 17 mi away | Sat · Evenings | — |
| 9 | Wattson Home Solutions | 53 | 4.3★ (110) | Worcester, 6 mi away | — | — |
| 10 | Custom Insulation Company, Inc. | 53 | 4.7★ (47) | Worcester, 7 mi away | — | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 330 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hudson, 9 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Grafton, 5 mi away
Ranked #3 because of its Google rating and review volume: 4.9★ from 225 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Marlborough, 7 mi away
Ranked #4 because of its Google rating and review volume: 4.7★ from 513 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Auburn, 5 mi away
Ranked #5 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Holliston, 15 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 103 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waltham, 25 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 278 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Billerica, 17 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 40 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Worcester, 6 mi away
Ranked #9 because of its Google rating and trade focus: 4.3★ from 110 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Worcester, 7 mi away
Ranked #10 because of its Google rating and trade focus: 4.7★ from 47 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sutton, 9 mi away
Ranked #11 because of its Google rating and trade focus: 4.5★ from 17 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Framingham, 12 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 54 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sutton, 14 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Uxbridge, 19 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Boylston, 5 mi away
Ranked #15 because of its Google rating and trade focus: 3.4★ from 15 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Natick, 19 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 32 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gardner, 23 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 26 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Auburn, 9 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Worcester, 5 mi away
Ranked #19 because of its Google rating and trade focus: 3.3★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Spencer, 17 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 48 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Holliston, 16 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 46 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Franklin, 23 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Marlborough, 10 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Framingham, 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 on 8 of 10 factors; credentials and recency not yet collected.
Based in Norfolk, 22 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#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 89 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 |
|---|---|---|
| Bay State Insulation | 5.0★ (2) | 16 mi |
| Brothers Painting | 5.0★ (2) | 16 mi |
| EcoMax Insulation | 5.0★ (2) | 9 mi |
| FRIG Attic Insulation & Roofing Services Framingham, MA | 5.0★ (1) | 15 mi |
| Greenstar Spray foam | 5.0★ (2) | 17 mi |
| HMHI (Home Maintenance Home Improvement) | 5.0★ (1) | In Shrewsbury |
| HomeWorks Energy | 1.0★ (2) | 13 mi |
| Hot & Cold Energy | 1.0★ (1) | 16 mi |
| I&W Insulation | 1.0★ (2) | 13 mi |
| J E Fournier Chimney and Roofing Contractors | 4.8★ (38) | In Shrewsbury |
| Jan Carpentry Inc | 5.0★ (1) | 15 mi |
| KB Home Improvement | 4.9★ (68) | In Shrewsbury |
| MAK Insulation | 1.0★ (2) | 18 mi |
| Mass Spray Foam Inc | 5.0★ (2) | 18 mi |
| Mass Spray Foam Inc | 5.0★ (1) | 15 mi |
| MX AZTECA INSULATION | 5.0★ (1) | 15 mi |
| Patrick Handyman LLC | 5.0★ (1) | 16 mi |
| Preserve Services | 5.0★ (14) | In Shrewsbury |
| Sullivan Environmental Services | 5.0★ (1) | 6 mi |
| ZND-JACK Attic-Solution & Insulation's & Roofing Service Acton, MA | 5.0★ (2) | 20 mi |
National price ranges in USD, not adjusted for Shrewsbury. 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 89 Shrewsbury 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 Shrewsbury 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 |