89/100CR Score
Ranked #1 because of its Google rating and availability: 4.8★ from 1,938 Google reviews, open 24/7.
- 4.8★ from 1,938 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 718 Douglas Ave, Oakland, CA 94603
Best Insulation Contractors in Clayton, CA (2026)
83 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Clayton: Attic Pros, CR Score 89/100; 4.8★ from 1,938 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Miller Attics, posts 24/7 hours; ranked #2 of 83.
- 3
Most-reviewed: Service Champions, 5,220 Google reviews at 4.9★, the most of 83 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
83 Clayton insulation contractors are ranked here by CR Score, from 8 published factors. 21 are open 24/7, 52 open Saturdays and 40 open Sundays, based on posted hours. The median Google rating is 4.9★ across 83 rated businesses.
Top 10 insulation contractors in Clayton at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Attic Pros | 89 | 4.8★ (1,938) | Oakland, 20 mi away | 24/7 | Overall |
| 2 | Miller Attics | 88 | 5.0★ (46) | Walnut Creek, 7 mi away | 24/7 | Emergencies |
| 3 | Service Champions | 87 | 4.9★ (5,220) | Martinez, 10 mi away | 24/7 | Most reviews |
| 4 | Alamo Attic Insulation Pro | 87 | 4.9★ (94) | Alamo, 8 mi away | 24/7 | — |
| 5 | Service Champions | 85 | 4.9★ (4,721) | Livermore, 19 mi away | 24/7 | — |
| 6 | Freschi Service Experts | 84 | 4.8★ (1,046) | Concord, 7 mi away | 24/7 | — |
| 7 | EcoGuard Pest Management | 84 | 4.9★ (279) | Dublin, 16 mi away | Sat · Sun · Evenings | — |
| 8 | American Attic | 84 | 5.0★ (219) | Oakland, 18 mi away | Sat · Sun | — |
| 9 | Reactic Restoration | 84 | 5.0★ (57) | Richmond, 22 mi away | 24/7 | — |
| 10 | EcoGuard Pest Management | 84 | 4.8★ (1,198) | Concord, 8 mi away | Sat | — |
The 83 best insulation contractors in Clayton, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Walnut Creek, 7 mi away
88/100CR ScoreRanked #2 because of its Google rating and availability: 5.0★ from 46 Google reviews, open 24/7.
- 5.0★ from 46 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 161 N Civic Dr, Walnut Creek, CA 94596
Based in Martinez, 10 mi away
87/100CR ScoreRanked #3 because of its Google rating and review volume: 4.9★ from 5,220 Google reviews, the most Google reviews on this list (5,220).
- 4.9★ from 5,220 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 261 Arthur Rd, Martinez, CA 94553
Based in Alamo, 8 mi away
87/100CR ScoreRanked #4 because of its Google rating and availability: 4.9★ from 94 Google reviews, open 24/7.
- 4.9★ from 94 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 220 Alamo Plaza, Alamo, CA 94507
Based in Livermore, 19 mi away
85/100CR ScoreRanked #5 because of its Google rating and availability: 4.9★ from 4,721 Google reviews, open 24/7.
- 4.9★ from 4,721 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 207 Boeing Ct, Livermore, CA 94551
Based in Concord, 7 mi away
84/100CR ScoreRanked #6 because of its Google rating and availability: 4.8★ from 1,046 Google reviews, open 24/7.
- 4.8★ from 1,046 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2440 Sprig Ct, Concord, CA 94520
Based in Dublin, 16 mi away
84/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 279 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 279 Google reviews
- Hours
- Mon–Sun 7 AM–9 PM
Based in Oakland, 18 mi away
84/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 219 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 219 Google reviews
- Hours
- Mon–Sun 7 AM–6 PM
- Address
- 2721 106th Ave, Oakland, CA 94605
Based in Richmond, 22 mi away
84/100CR ScoreRanked #9 because of its Google rating and availability: 5.0★ from 57 Google reviews, open 24/7.
- 5.0★ from 57 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3049 Research Dr, Richmond, CA 94806
Based in Concord, 8 mi away
84/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 1,198 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 1,198 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 8 AM–12 PM · Sun closed
- Address
- 420 N Buchanan Cir STE 3, Pacheco, CA 94553
Based in Hayward, 20 mi away
84/100CR ScoreRanked #11 because of its Google rating and availability: 4.9★ from 48 Google reviews, open 24/7.
- 4.9★ from 48 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1340 A St, Hayward, CA 94541
#12 Atticare USA
Based in San Leandro, 19 mi away
83/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.8★ from 439 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 439 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat–Sun 9 AM–6 PM
- Address
- 303 W Joaquin Ave Unit #103, San Leandro, CA 94577
Based in Pleasanton, 17 mi away
83/100CR ScoreRanked #13 because of its Google rating and availability: 4.8★ from 2,337 Google reviews, open 24/7.
- 4.8★ from 2,337 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7020 Commerce Dr, Pleasanton, CA 94588
Based in San Leandro, 21 mi away
83/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 151 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 151 Google reviews
- Hours
- Mon–Sat 8 AM–6 PM · Sun 9 AM–4 PM
- Address
- 456 Hester St, San Leandro, CA 94577
Based in Livermore, 19 mi away
83/100CR ScoreRanked #15 because of its Google rating and availability: 4.9★ from 1,331 Google reviews, open 24/7.
- 4.9★ from 1,331 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 96 Rickenbacker Cir, Livermore, CA 94551
Based in Oakland, 20 mi away
82/100CR ScoreRanked #16 because of its Google rating and availability: 4.7★ from 31 Google reviews, open 24/7.
- 4.7★ from 31 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2632 International Blvd #155b, Oakland, CA 94601
Based in Berkeley, 19 mi away
82/100CR ScoreRanked #17 because of its Google rating and availability: 4.7★ from 14 Google reviews, open 24/7.
- 4.7★ from 14 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2113B Delaware St, Berkeley, CA 94709
#18 Mr Attic
Based in Martinez, 11 mi away
81/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.7★ from 23 Google reviews, listed on Google as “Insulation contractor”.
- 4.7★ from 23 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun 7 AM–5 PM
- Address
- 3816 Alhambra Way, Martinez, CA 94553
#19 Eagle Air
Based in Livermore, 20 mi away
81/100CR ScoreRanked #19 because of its Google rating and availability: 4.9★ from 549 Google reviews, open 24/7.
- 4.9★ from 549 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5542 Brisa St Ste B, Livermore, CA 94550
Based in Berkeley, 19 mi away
80/100CR ScoreRanked #20 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
- 5.0★ from 4 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Berkeley, 20 mi away
80/100CR ScoreRanked #21 because of its Google rating and availability: 4.6★ from 5 Google reviews, open 24/7.
- 4.6★ from 5 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1227 Hopkins St, Berkeley, CA 94702
Based in Pleasanton, 19 mi away
80/100CR ScoreRanked #22 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
- 5.0★ from 3 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4303 Valley Ave, Pleasanton, CA 94566
Based in Alameda, 18 mi away
80/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.8★ from 39 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 39 Google reviews
- Hours
- Mon–Sun 8 AM–7 PM
Based in Walnut Creek, 7 mi away
80/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 29 Google reviews
- Hours
- Mon–Sat 8 AM–5 PM · Sun closed
- Address
- 1255 Treat Blvd suite 300, Walnut Creek, CA 94597
Based in Berkeley, 18 mi away
79/100CR ScoreRanked #25 because of its Google rating and availability: 3.4★ from 5 Google reviews, open 24/7.
- 3.4★ from 5 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1569 Arch St, Berkeley, CA 94708
Insulation contractors ranked #26 to #50
#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 83 ranked insulation contractors here; the rest are on their profiles.
Also serving Clayton
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 |
|---|---|---|
| Adams Field Services LLC. | 3.0★ (2) | 5 mi |
| Airseal Inc | 3.0★ (2) | 12 mi |
| All pro Insulation and junk solutions | 5.0★ (1) | 15 mi |
| Attic Fix Pro | 5.0★ (1) | 11 mi |
| Attic Solutions | 3.0★ (2) | 4 mi |
| Bayside Insulation-Construction Inc | 5.0★ (1) | 7 mi |
| Brandon's Attic Control | 5.0★ (2) | 18 mi |
| Brick & Hammer | 5.0★ (2) | 8 mi |
| Canyon Insulation Inc | 5.0★ (2) | 20 mi |
| CELInsulation | 5.0★ (1) | 14 mi |
| Grats Decor Interior Design & Build, Inc. | 5.0★ (16) | In Clayton |
| Insulation & Air Duct Crew | 5.0★ (2) | 22 mi |
| Kevin's insulation Co Antioch | 5.0★ (1) | 8 mi |
| Panda Heating & Cooling | 3.5★ (2) | 20 mi |
| Peak Core Insulation | 5.0★ (2) | 20 mi |
| Performance Contracting Inc | 1.0★ (2) | 20 mi |
| Petrochem Insulation Inc | 1.0★ (2) | 20 mi |
| Prime Air Duct Cleaning | 5.0★ (2) | 20 mi |
| PRO ATTIC RESTORATION | 5.0★ (2) | 20 mi |
| Quality Pro Guard | 1.0★ (2) | 12 mi |
How much do insulation contractors cost in Clayton?
National price ranges in USD, not adjusted for Clayton. 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 |
How we ranked Clayton insulation contractors
We scored 83 Clayton 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 Clayton 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 |
Insulation contractors in Clayton: frequently asked questions
Who is the best insulation contractor in Clayton?
By CR Score, the highest-ranked insulation contractor in Clayton, CA is Attic Pros with a CR Score of 89/100. It has 4.8★ from 1,938 Google reviews. It is open 24/7. Miller Attics (#2) and Service Champions (#3) follow. We ranked 83 insulation contractors on 8 factors, last updated October 22, 2026.
How many insulation contractors are there in Clayton?
ContractorsRanked ranks 83 insulation contractors serving Clayton, CA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which insulation contractors in Clayton are open 24/7?
21 ranked insulation contractors in Clayton post 24/7 hours. The highest-ranked are Attic Pros (#1), Miller Attics (#2) and Service Champions (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which insulation contractors in Clayton work on weekends?
52 of 83 ranked insulation contractors post Saturday hours and 40 post Sunday hours. The highest-ranked open Saturdays are Attic Pros (#1), Miller Attics (#2) and Service Champions (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does attic insulation cost in Clayton?
Attic insulation typically costs $1,700 to $2,500, with $2,100 typical (Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range). This is a national range, not adjusted for Clayton. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Clayton insulation contractors have?
The median Google rating among 83 rated insulation contractors in Clayton is 4.9★, with a median of 26 reviews. Service Champions has the most, 5,220 reviews, and ranks #3. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank insulation contractors?
Each insulation contractor gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do insulation contractors outside Clayton count in this ranking?
Yes, if they are within 25 mi of the Clayton city center, our service radius for insulation contractors. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Update log for Clayton
- October 2026: CR Scores recalculated for 83 insulation contractors serving Clayton.
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