19 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Durham: My Home Contracting, CR Score 82/100; 5.0★ from 7 Google reviews; open 24/7.
Most-reviewed: TC Hafford Basement Systems, 290 Google reviews at 4.6★, the most of 19 ranked; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
19 Durham insulation contractors are ranked here by CR Score, from 8 published factors. 1 is open 24/7, 10 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 4.8★ across 19 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | My Home Contracting | 82 | 5.0★ (7) | Concord, 16 mi away | 24/7 | Overall |
| 2 | Spray Foam Insulators By Luke Whitcomb | 79 | 5.0★ (35) | Concord, 24 mi away | — | — |
| 3 | Mill City Energy | 78 | 5.0★ (16) | Auburn, 23 mi away | — | — |
| 4 | Ambient Insulations LLC | 78 | 4.7★ (13) | Hampton, 10 mi away | Sat | — |
| 5 | D&D Insulation LLC | 78 | 4.6★ (14) | Barrington, 5 mi away | Sat | — |
| 6 | Efficient Home Services, LLC | 77 | 5.0★ (13) | Eliot, 10 mi away | Sat | — |
| 7 | A2B Spray Foam | 75 | 5.0★ (3) | Derry, 10 mi away | Sat · Evenings | — |
| 8 | The Green Cocoon, LIC - Home Insulation Contractor | 75 | 4.8★ (73) | Amesbury, 20 mi away | — | — |
| 9 | Sheehan Real Estate LLC | 75 | 4.4★ (27) | Durham | — | — |
| 10 | TC Hafford Basement Systems | 75 | 4.6★ (290) | Biddeford, 21 mi away | Sat · Evenings | Most reviews |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and availability: 5.0★ from 7 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Concord, 24 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Auburn, 23 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Hampton, 10 mi away
Ranked #4 because of its Google rating and trade focus: 4.7★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Barrington, 5 mi away
Ranked #5 because of its Google rating and trade focus: 4.6★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Eliot, 10 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 on 6 of 8 factors; credentials and recency not yet collected.
Based in Derry, 10 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Amesbury, 20 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 73 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Durham
Ranked #9 because of its Google rating and trade focus: 4.4★ from 27 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Biddeford, 21 mi away
Ranked #10 because of its Google rating and review volume: 4.6★ from 290 Google reviews, the most Google reviews on this list (290).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lebanon, 19 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 39 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Pembroke, 18 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bedford, 21 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chester, 17 mi away
Ranked #14 because of its Google rating and review volume: 4.9★ from 233 Google reviews, 233 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Portsmouth, 9 mi away
Ranked #15 because of its Google rating and trade focus: 3.8★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Concord, 18 mi away
Ranked #16 because of its Google rating and availability: 4.2★ from 5 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sanford, 21 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Auburn, 25 mi away
Ranked #18 because of its Google rating and trade focus: 3.5★ from 20 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Haverhill, 24 mi away
Ranked #19 because of its Google rating and trade focus: 2.0★ from 3 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
16 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 |
|---|---|---|
| Bad Apple | 14 mi | |
| Foam Fellas | 3.0★ (2) | 4 mi |
| Foam Fellas LLC Spray foam Insulation - Professional Spray Foam Insulation Contractor in Dover NH | 4 mi | |
| Fox Hill Spray Foam | 3.0★ (2) | 7 mi |
| GM Building Company, LLP | 23 mi | |
| Insulating Technologies Inc | 21 mi | |
| Insulkings | 12 mi | |
| Irex Energy Solutions | 22 mi | |
| Jones Boys Insulation Inc | 9 mi | |
| Krempel Insulation Technologies LP | 5.0★ (1) | 19 mi |
| Portsmouth Spray Foam Insulation Pros | 5.0★ (1) | 8 mi |
| Seacoast Home Services & Energy Auditing | 11 mi | |
| Tailored Insulation LLc | 19 mi | |
| The Energy Hound | 19 mi | |
| The Worthmore Group | 5.0★ (1) | 23 mi |
| Urban Insulation | 21 mi |
National price ranges in USD, not adjusted for Durham. 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 19 Durham 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 Durham 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 |