33 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Sonoma: KC Home Services Plumbing, Heating & AC Repair, CR Score 58/100; 4.9★ from 827 Google reviews; open 24/7.
Best for emergencies (open 24/7): Reactic Restoration, posts 24/7 hours; ranked #2 of 33.
Most-reviewed: Under The House., 62 Google reviews at 5.0★, the most of 33 ranked after KC Home Services Plumbing, Heating & AC Repair; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
33 Sonoma insulation contractors are ranked here by CR Score, from ten published factors. 5 are open 24/7, 16 open Saturdays and 11 open Sundays, based on posted hours. The median Google rating is 5.0★ across 33 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | KC Home Services Plumbing, Heating & AC Repair | 58 | 4.9★ (827) | Santa Rosa, 16 mi away | 24/7 | Overall |
| 2 | Reactic Restoration | 58 | 5.0★ (57) | Richmond, 22 mi away | 24/7 | Emergencies |
| 3 | Under The House. | 57 | 5.0★ (62) | Santa Rosa, 20 mi away | Sat · Sun · Evenings | Most reviews |
| 4 | Reactic Restoration | 56 | 4.7★ (10) | Novato, 14 mi away | 24/7 | — |
| 5 | Atticare | 55 | 5.0★ (15) | Petaluma, 11 mi away | Sat | — |
| 6 | Attic Kings | 54 | 5.0★ (26) | Vallejo, 18 mi away | Sat | — |
| 7 | Clean CrawlSpace Inc. | 54 | 5.0★ (57) | Santa Rosa, 16 mi away | — | — |
| 8 | Noble Insulation Inc | 54 | 5.0★ (44) | Richmond, 25 mi away | Sat · Evenings | — |
| 9 | Eco Attic Systems | 53 | 4.8★ (49) | Corte Madera, 25 mi away | Sat · Evenings | — |
| 10 | SOS Restoration | 53 | 5.0★ (3) | San Rafael, 20 mi away | 24/7 | — |
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 review volume: 4.9★ from 827 Google reviews, the most in Sonoma.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Richmond, 22 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 57 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 20 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Novato, 14 mi away
Ranked #4 because of its Google rating and trade focus: 4.7★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Petaluma, 11 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vallejo, 18 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 26 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 16 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 57 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Richmond, 25 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Corte Madera, 25 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 49 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Rafael, 20 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 16 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 29 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 19 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 17 mi away
Ranked #13 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 Petaluma, 10 mi away
Ranked #14 because of its Google rating and trade focus: 3.5★ from 19 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 7 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 24 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 20 mi away
Ranked #17 because of its Google rating and trade focus: 4.0★ 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 Santa Rosa, 16 mi away
Ranked #18 because of its Google rating and trade focus: 4.4★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cotati, 14 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Rafael, 20 mi away
Ranked #20 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 Fairfield, 22 mi away
Ranked #21 because of its Google rating and availability: 5.0★ from 10 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 24 mi away
Ranked #22 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Rafael, 23 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 18 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 19 mi away
Ranked #25 because of its Google rating and trade focus: 3.8★ from 5 Google reviews, listed on Google as “Roofing 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 #33, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Vezer's Roofing | 45 | 4.6★ (9) | 25 mi |
| 27 | Electrify My Home | 45 | 4.9★ (46) | 24 mi |
| 28 | Roofmasters | 45 | 4.7★ (42) | 23 mi |
| 29 | Marin Pest Control | 45 | 4.0★ (4) | 22 mi |
| 30 | R&T Pro Remodeling | 45 | 5.0★ (4) | 24 mi |
| 31 | Certified Coatings of Calif | 43 | 4.7★ (3) | 21 mi |
| 32 | Alliance Environmental Group | 42 | 2.5★ (10) | 18 mi |
| 33 | Performance Contracting Inc | 40 | 3.0★ (5) | 24 mi |
18 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 |
|---|---|---|
| AG Painting | 5.0★ (1) | 9 mi |
| B & D Insulation | 5.0★ (1) | 15 mi |
| California State Insulation | 5.0★ (2) | 18 mi |
| CELInsulation | 5.0★ (1) | 23 mi |
| Certified Specialists, Inc. | 5.0★ (2) | 16 mi |
| Dublin A+ Insulation | 22 mi | |
| Ecco Insulation | In Sonoma | |
| Equinox Roofing Solutions | 5.0★ (1) | 20 mi |
| Ferrando's Plumbing | In Sonoma | |
| North Bay Insulation | 20 mi | |
| North Bay Pacific Insulators | 5.0★ (1) | 19 mi |
| PEM Insulation Company, Inc. | 18 mi | |
| Petrochem Insulation Inc | 1.0★ (2) | 18 mi |
| Protek Cargo | 5.0★ (2) | 12 mi |
| R.A. Wilson Construction | 5.0★ (23) | In Sonoma |
| Rohnert Park attic insulation | 1.0★ (1) | 13 mi |
| S.A.F.E- Mold, Attics & Ceawl Space Restoration | 18 mi | |
| Valente's Handyman Service | 1.0★ (1) | 21 mi |
National price ranges in USD, not adjusted for Sonoma. 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 33 Sonoma 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 Sonoma 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 |