23 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Modesto: Straight Edge Insulation of Modesto, CR Score 90/100; 5.0★ from 15 Google reviews; open 24/7.
Best for emergencies (open 24/7): California duct cleaning, posts 24/7 hours; ranked #17 of 23.
Most-reviewed: EcoGuard Pest Management, 142 Google reviews at 5.0★, the most of 23 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
23 Modesto insulation contractors are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 13 open Saturdays and 8 open Sundays, based on posted hours. The median Google rating is 4.9★ across 23 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Straight Edge Insulation of Modesto | 90 | 5.0★ (15) | Modesto | 24/7 | Overall |
| 2 | CA Attic Solutions | 87 | 4.9★ (70) | Modesto | Sat | — |
| 3 | Atticare Tracy | 83 | 5.0★ (16) | Livermore, 15 mi away | Sat · Sun · Evenings | — |
| 4 | Straight Edge Insulation of Turlock | 82 | 5.0★ (18) | Turlock, 12 mi away | — | — |
| 5 | Elite Spray Foam Ceres | 82 | 4.2★ (5) | Ceres, 3 mi away | Sat · Sun | — |
| 6 | EcoGuard Pest Management | 82 | 5.0★ (142) | Lathrop, 20 mi away | Sat · Sun · Evenings | Most reviews |
| 7 | Precision Insulation Inc's | 81 | 4.9★ (11) | Modesto | Sun · Evenings | — |
| 8 | Best Insulation Co | 80 | 5.0★ (3) | Ceres, 3 mi away | Sat · Sun · Evenings | — |
| 9 | Valley Master Insulation Corp | 80 | 5.0★ (25) | Manteca, 17 mi away | Sat | — |
| 10 | Masterguard Insulation | 80 | 5.0★ (4) | Modesto | Sat | — |
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 15 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Modesto
Ranked #2 because of its Google rating and trade focus: 4.9★ from 70 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Livermore, 15 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 6 of 8 factors; credentials and recency not yet collected.
Based in Turlock, 12 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Ceres, 3 mi away
Ranked #5 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lathrop, 20 mi away
Ranked #6 because of its Google rating and review volume: 5.0★ from 142 Google reviews, the most Google reviews on this list (142).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Modesto
Ranked #7 because of its Google rating and trade focus: 4.9★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ceres, 3 mi away
Ranked #8 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 Manteca, 17 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Modesto
Ranked #10 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Modesto
Ranked #11 because of its Google rating and trade focus: 4.3★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Turlock, 15 mi away
Ranked #12 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 Ceres, 3 mi away
Ranked #13 because of its Google rating and availability: 4.9★ from 8 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in August, 22 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Modesto
Ranked #15 because of its Google rating and review volume: 4.9★ from 40 Google reviews, 40 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ceres, 20 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Stockton, 23 mi away
Ranked #17 because of its Google rating and availability: 5.0★ from 6 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ceres, 3 mi away
Ranked #18 because of its Google rating and trade focus: 2.3★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Galt, 11 mi away
Ranked #19 because of its Google rating and trade focus: 3.7★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Turlock, 12 mi away
Ranked #20 because of its Google rating and trade focus: 3.2★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Stockton, 24 mi away
Ranked #21 because of its Google rating and trade focus: 4.0★ from 8 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lathrop, 21 mi away
Ranked #22 because of its Google rating and trade focus: 3.6★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Modesto
Ranked #23 because of its Google rating and review volume: 3.4★ from 17 Google reviews, 17 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
9 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 |
|---|---|---|
| American Insulation inc. | 3.0★ (1) | 15 mi |
| Attic Top Team | 5.0★ (1) | 23 mi |
| Brunk Industries Inc | 5.0★ (1) | 12 mi |
| Custom Spray Systems | 3.0★ (2) | In Modesto |
| G Star Duct Cleaning | In Modesto | |
| LEGACY INSULATION | 5.0★ (2) | 12 mi |
| Platinum Insulation Inc. | 5.0★ (1) | 20 mi |
| Valley Spray Foam Insulation | In Modesto | |
| Western Building Materials Co | 4.0★ (1) | 24 mi |
National price ranges in USD, not adjusted for Modesto. 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 23 Modesto 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 Modesto 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 |