9 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Merced: Armor Roofing, CR Score 84/100; 4.8★ from 5 Google reviews; open 24/7.
Most-reviewed: Straight Edge Roofing, Inc, 265 Google reviews at 4.9★, the most of 9 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
9 Merced insulation contractors are ranked here by CR Score, from 8 published factors. 1 is open 24/7, 3 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 4.9★ across 9 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Armor Roofing | 84 | 4.8★ (5) | Merced | 24/7 | Overall |
| 2 | C.A.V insulation Inc. | 80 | 5.0★ (25) | Los Banos, 14 mi away | Sat | — |
| 3 | Straight Edge Insulation | 77 | 5.0★ (38) | Atwater, 12 mi away | — | — |
| 4 | Straight Edge Insulation of Turlock | 77 | 5.0★ (18) | Turlock, 25 mi away | — | — |
| 5 | Straight Edge Roofing, Inc | 75 | 4.9★ (265) | Atwater, 12 mi away | — | Most reviews |
| 6 | Blaine Heating & Air Conditioning | 75 | 4.7★ (104) | Merced | — | — |
| 7 | Empire Insulation Inc | 75 | 3.5★ (8) | Turlock, 22 mi away | — | — |
| 8 | Allstate Spray Foam Roofing | 74 | 5.0★ (19) | Ceres, 17 mi away | Sat | — |
| 9 | Specialty Roofing of CA | 73 | 4.9★ (47) | Atwater, 6 mi away | — | — |
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: 4.8★ from 5 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Los Banos, 14 mi away
Ranked #2 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 Atwater, 12 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Turlock, 25 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 Atwater, 12 mi away
Ranked #5 because of its Google rating and review volume: 4.9★ from 265 Google reviews, the most Google reviews on this list (265).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Merced
Ranked #6 because of its Google rating and review volume: 4.7★ from 104 Google reviews, 104 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Turlock, 22 mi away
Ranked #7 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, 17 mi away
Ranked #8 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 Atwater, 6 mi away
Ranked #9 because of its Google rating and review volume: 4.9★ from 47 Google reviews, 47 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
National price ranges in USD, not adjusted for Merced. 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 9 Merced 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 Merced 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 |