14 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in California: RetroFoam of Pittsburgh, CR Score 79/100; 4.9★ from 163 Google reviews.
Best for emergencies (open 24/7): Everlast Insulation, Inc., posts 24/7 hours; ranked #3 of 14.
Most-reviewed: Mincin Insulation Service Inc, 174 Google reviews at 4.8★, the most of 14 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
14 California insulation contractors are ranked here by CR Score, from 8 published factors. 1 is open 24/7, 1 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 4.8★ across 14 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | RetroFoam of Pittsburgh | 79 | 4.9★ (163) | Duquesne, 22 mi away | — | Overall |
| 2 | Mincin Insulation Service Inc | 79 | 4.8★ (174) | Pittsburgh, 23 mi away | — | Most reviews |
| 3 | Everlast Insulation, Inc. | 79 | 4.7★ (15) | Greensburg, 25 mi away | 24/7 | Emergencies |
| 4 | The Spray Foam Company of Pittsburgh | 78 | 3.5★ (8) | Jefferson Hills, 15 mi away | — | — |
| 5 | Koala Insulation of Pittsburgh | 78 | 4.8★ (74) | Bethel Park, 19 mi away | — | — |
| 6 | Pittsburgh Protective Coatings | 77 | 4.9★ (62) | Bethel Park, 20 mi away | Evenings | — |
| 7 | Insulright | 74 | 5.0★ (20) | Duquesne, 22 mi away | — | — |
| 8 | Tim Grindle Insulation | 74 | 4.6★ (11) | Uniontown, 14 mi away | — | — |
| 9 | Chiz Bros: Refractory and Insulation Specialists | 73 | 4.5★ (8) | Clairton, 15 mi away | — | — |
| 10 | ZND-MDEW Attic-Solution & Insulation's & Roofing Service North Versailles, PA | 71 | 4.9★ (10) | Duquesne, 22 mi away | Evenings | — |
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 trade focus: 4.9★ from 163 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Pittsburgh, 23 mi away
Ranked #2 because of its Google rating and review volume: 4.8★ from 174 Google reviews, the most Google reviews on this list (174).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greensburg, 25 mi away
Ranked #3 because of its Google rating and availability: 4.7★ from 15 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Jefferson Hills, 15 mi away
Ranked #4 because of its Google rating and trade focus: 3.5★ from 8 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Bethel Park, 19 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 74 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bethel Park, 20 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 62 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Duquesne, 22 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Uniontown, 14 mi away
Ranked #8 because of its Google rating and trade focus: 4.6★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Clairton, 15 mi away
Ranked #9 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Duquesne, 22 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in White Oak, 20 mi away
Ranked #11 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Duquesne, 23 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “Contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greensburg, 24 mi away
Ranked #13 because of its Google rating and review volume: 5.0★ from 34 Google reviews, 34 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in McKeesport, 18 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 6 Google reviews, listed on Google as “Manufacturer”.
Based on 6 of 8 factors; credentials and recency not yet collected.
10 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 |
|---|---|---|
| A.A. Construction & Painting | 5 mi | |
| Bartko Insulation Services, LLC | 24 mi | |
| Centerpoint Painting Systems | 23 mi | |
| PM Construction | 25 mi | |
| Positive Energy Consulting | 17 mi | |
| Precision Painting & Maintenance | 3.0★ (2) | 25 mi |
| Spray Wizard | 23 mi | |
| Suretight Insulated Panels | 23 mi | |
| Timeless Painting & Resurfacing | 24 mi | |
| TSF Insulation | 5.0★ (1) | 17 mi |
National price ranges in USD, not adjusted for California. 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 14 California 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 California 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 |