24 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in San Martin: Attic Pros, CR Score 89/100; 4.7★ from 104 Google reviews; open 24/7.
Best for emergencies (open 24/7): Los Gatos Top Insulation, posts 24/7 hours; ranked #2 of 24.
Most-reviewed: Newhaus Roofing & Construction, 148 Google reviews at 4.9★, the most of 24 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
24 San Martin insulation contractors are ranked here by CR Score, from 8 published factors. 10 are open 24/7, 13 open Saturdays and 13 open Sundays, based on posted hours. The median Google rating is 5.0★ across 24 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Attic Pros | 89 | 4.7★ (104) | San Jose, 19 mi away | 24/7 | Overall |
| 2 | Los Gatos Top Insulation | 88 | 4.9★ (86) | Los Gatos, 23 mi away | 24/7 | Emergencies |
| 3 | Coast Building Products: | 83 | 4.6★ (7) | Gilroy, 5 mi away | — | — |
| 4 | Newhaus Roofing & Construction | 83 | 4.9★ (148) | San Jose, 24 mi away | 24/7 | Most reviews |
| 5 | Trio Heating & Air Hayward | 82 | 5.0★ (148) | Ashland, 25 mi away | 24/7 | — |
| 6 | Attic City San Jose | 82 | 4.6★ (14) | San Jose, 23 mi away | 24/7 | — |
| 7 | Attic Masters Insulation Services | 82 | 5.0★ (7) | Canoga Park, 20 mi away | 24/7 | — |
| 8 | Everlast Attic | 81 | 5.0★ (7) | San Jose, 22 mi away | 24/7 | — |
| 9 | AttiCal Insulation and Rodents | 80 | 5.0★ (11) | Redwood Shores, 25 mi away | Sat · Sun · Evenings | — |
| 10 | Attic Bros of San Jose | 79 | 4.6★ (7) | San Jose, 25 mi away | 24/7 | — |
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: 4.7★ from 104 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Los Gatos, 23 mi away
Ranked #2 because of its Google rating and availability: 4.9★ from 86 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gilroy, 5 mi away
Ranked #3 because of its Google rating and trade focus: 4.6★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in San Jose, 24 mi away
Ranked #4 because of its Google rating and review volume: 4.9★ from 148 Google reviews, the most Google reviews on this list (148).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ashland, 25 mi away
Ranked #5 because of its Google rating and review volume: 5.0★ from 148 Google reviews, the most Google reviews on this list (148).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in San Jose, 23 mi away
Ranked #6 because of its Google rating and availability: 4.6★ from 14 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Canoga Park, 20 mi away
Ranked #7 because of its Google rating and availability: 5.0★ from 7 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in San Jose, 22 mi away
Ranked #8 because of its Google rating and availability: 5.0★ from 7 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Redwood Shores, 25 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in San Jose, 25 mi away
Ranked #10 because of its Google rating and availability: 4.6★ from 7 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Fremont, 9 mi away
Ranked #11 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 Santa Cruz, 24 mi away
Ranked #12 because of its Google rating and availability: 5.0★ from 13 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hollister, 18 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in San Jose, 25 mi away
Ranked #14 because of its Google rating and availability: 5.0★ from 7 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Watsonville, 17 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Aptos, 23 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 6 of 8 factors; credentials and recency not yet collected.
Based in Prunedale, 17 mi away
Ranked #17 because of its Google rating and trade focus: 4.6★ from 12 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in San Jose, 15 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in San Jose, 20 mi away
Ranked #19 because of its Google rating and availability: 5.0★ from 8 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gilroy, 5 mi away
Ranked #20 because of its Google rating and review volume: 4.9★ from 53 Google reviews, 53 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Morgan Hill, 23 mi away
Ranked #21 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gilroy, 8 mi away
Ranked #22 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Half Moon Bay, 22 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Prunedale, 15 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 6 of 8 factors; credentials and recency not yet collected.
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 |
|---|---|---|
| 911 Insulation Contractor | 22 mi | |
| ALCAL Specialty Contracting Gilroy - Home Service Division | 7 mi | |
| Alliance Insulation | 5.0★ (1) | 20 mi |
| Attic Clean Up San Jose | 22 mi | |
| Attic Crew | 21 mi | |
| Attic Insulation Pros Campbell | 22 mi | |
| Atticare San Jose | 9 mi | |
| Bay Area Rodent Solutions | 23 mi | |
| Cal Spray Foam Insulation | 22 mi | |
| Gr8 Attic Insulation San Jose | 10 mi | |
| Jake's Roofing & Coatings | 5.0★ (1) | 19 mi |
| San Jose Insulation Pros | 19 mi | |
| Saratoga Insulation | 9 mi | |
| Signature Home | 23 mi | |
| Silver Peak Construction Group Inc. | 5.0★ (2) | 24 mi |
| South Bay Spray Foam | 4 mi | |
| Stellar Attic Inc. | 5.0★ (1) | 21 mi |
| Superb Attic Cleaning Morgan Hill | 5.0★ (1) | 5 mi |
| Temp Control-HVAC | Best Hvac Services in san jose | 5.0★ (1) | 19 mi |
| Triumph Insulation Solution San Jose | 17 mi |
National price ranges in USD, not adjusted for San Martin. 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 24 San Martin 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 San Martin 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 |