157 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Waltham: HomeWorks Energy, CR Score 64/100; 4.7★ from 2,479 Google reviews; open 24/7.
Best for emergencies (open 24/7): Scaffolding & Shoring Specialists | Lothrop Co, posts 24/7 hours; ranked #9 of 157.
Most-reviewed: Power Home Remodeling, 4,159 Google reviews at 4.7★, the most of 157 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
157 Waltham insulation contractors are ranked here by CR Score, from ten published factors. 11 are open 24/7, 93 open Saturdays and 18 open Sundays, based on posted hours. The median Google rating is 4.9★ across 157 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | HomeWorks Energy | 64 | 4.7★ (2,479) | Arlington, 8 mi away | 24/7 | Overall |
| 2 | EcoShield Pest Solutions | 62 | 4.8★ (3,069) | Winchester, 8 mi away | Sat | — |
| 3 | Neeeco | 61 | 4.9★ (3,580) | Wilmington, 16 mi away | Sat · Evenings | — |
| 4 | Colt Home Services | 60 | 5.0★ (278) | Waltham | Evenings | — |
| 5 | Advanced Green Insulation | 58 | 5.0★ (1,236) | Rockland, 23 mi away | Sat | — |
| 6 | Power Home Remodeling | 58 | 4.7★ (4,159) | Waltham | Sat · Evenings | Most reviews |
| 7 | Weathervane Home Services | 57 | 4.9★ (333) | Burlington, 7 mi away | — | — |
| 8 | Boston Admirals Insulation | 57 | 4.9★ (41) | Everett, 10 mi away | Sat · Sun · Evenings | — |
| 9 | Scaffolding & Shoring Specialists | Lothrop Co | 56 | 4.8★ (9) | Malden, 9 mi away | 24/7 | Emergencies |
| 10 | Massachusetts Spray Foam Insulation | 56 | 5.0★ (29) | Arlington, 5 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: 4.7★ from 2,479 Google reviews, listed on Google as “Insulation contractor”.
Based in Winchester, 8 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 3,069 Google reviews, listed on Google as “Insulation contractor”.
Based in Wilmington, 16 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 3,580 Google reviews, listed on Google as “Insulation contractor”.
Based in Waltham
Ranked #4 because of its Google rating and trade focus: 5.0★ from 278 Google reviews, listed on Google as “Insulation contractor”.
Based in Rockland, 23 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 1,236 Google reviews, listed on Google as “Insulation contractor”.
Based in Waltham
Ranked #6 because of its Google rating and review volume: 4.7★ from 4,159 Google reviews, the most in Waltham.
Based in Burlington, 7 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 333 Google reviews, listed on Google as “Insulation contractor”.
Based in Everett, 10 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 41 Google reviews, listed on Google as “Insulation contractor”.
Based in Malden, 9 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based in Arlington, 5 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Insulation contractor”.
Based in Brookline, 6 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 33 Google reviews, listed on Google as “Insulation contractor”.
Based in Boston, 10 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Insulation contractor”.
Based in Natick, 9 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 32 Google reviews, listed on Google as “Insulation contractor”.
Based in Revere, 12 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 68 Google reviews, listed on Google as “Insulation contractor”.
Based in Woburn, 10 mi away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 59 Google reviews, listed on Google as “Insulation contractor”.
Based in Boston, 5 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 42 Google reviews, listed on Google as “Insulation contractor”.
Based in Watertown, 3 mi away
Ranked #17 because of its Google rating and trade focus: 4.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based in Malden, 8 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based in Waltham
Ranked #19 because of its Google rating and trade focus: 4.8★ from 25 Google reviews, listed on Google as “Insulation contractor”.
Based in West Concord, 10 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based in Waltham
Ranked #21 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based in Billerica, 12 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 40 Google reviews, listed on Google as “Insulation contractor”.
Based in Revere, 11 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 80 Google reviews, listed on Google as “Insulation contractor”.
Based in Wayland, 5 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “Insulation contractor”.
Based in Boston, 11 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 3 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 157 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.
National price ranges in USD, not adjusted for Waltham. 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 157 Waltham 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 Waltham 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 |