63 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Los Gatos: Los Gatos Top Insulation, CR Score 63/100; 4.9★ from 86 Google reviews; open 24/7.
Best for emergencies (open 24/7): Attic Pros, posts 24/7 hours; ranked #2 of 63.
Most-reviewed: Service Champions, 3,407 Google reviews at 4.9★, the most of 63 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
63 Los Gatos insulation contractors are ranked here by CR Score, from ten published factors. 22 are open 24/7, 41 open Saturdays and 42 open Sundays, based on posted hours. The median Google rating is 5.0★ across 63 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Los Gatos Top Insulation | 63 | 4.9★ (86) | Los Gatos | 24/7 | Overall |
| 2 | Attic Pros | 60 | 4.7★ (104) | San Jose, 8 mi away | 24/7 | Emergencies |
| 3 | Service Champions | 59 | 4.9★ (3,407) | San Jose, 13 mi away | 24/7 | Most reviews |
| 4 | TRIO Heating, Air & Plumbing | 58 | 4.9★ (1,142) | San Jose, 10 mi away | 24/7 | — |
| 5 | Attic City San Jose | 58 | 4.6★ (14) | San Jose, 7 mi away | 24/7 | — |
| 6 | Everlast Attic | 57 | 5.0★ (7) | San Jose, 6 mi away | 24/7 | — |
| 7 | 911 Attic Insulation | 57 | 5.0★ (19) | Fremont, 13 mi away | 24/7 | — |
| 8 | Attic Masters Insulation Services | 57 | 5.0★ (7) | Canoga Park, 8 mi away | 24/7 | — |
| 9 | AttiCal Insulation and Rodents | 57 | 5.0★ (11) | Redwood Shores, 6 mi away | Sat · Sun · Evenings | — |
| 10 | Delta Spray Foam Insulation | 57 | 5.0★ (34) | Mountain View, 13 mi away | Sat · Sun · Evenings | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 8 mi away
Ranked #2 because of its Google rating and trade focus: 4.7★ from 104 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 13 mi away
Ranked #3 because of its Google rating and review volume: 4.9★ from 3,407 Google reviews, the most in Los Gatos.
Based in San Jose, 10 mi away
Ranked #4 because of its Google rating and review volume: 4.9★ from 1,142 Google reviews.
Based in San Jose, 7 mi away
Ranked #5 because of its Google rating and trade focus: 4.6★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 6 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based in Fremont, 13 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Insulation contractor”.
Based in Canoga Park, 8 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based in Redwood Shores, 6 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 in Mountain View, 13 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 34 Google reviews, listed on Google as “Insulation contractor”.
Based in Newark, 22 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 474 Google reviews, listed on Google as “Insulation contractor”.
Based in Redwood City, 22 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 156 Google reviews, listed on Google as “Insulation contractor”.
Based in Saratoga, 4 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 12 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 266 Google reviews, listed on Google as “Insulation contractor”.
Based in Palo Alto, 17 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 11 mi away
Ranked #16 because of its Google rating and trade focus: 4.6★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based in Redwood Shores, 17 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based in Santa Clara, 11 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 8 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Insulation contractor”.
Based in Redwood Shores, 9 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 9 mi away
Ranked #21 because of its Google rating and review volume: 4.9★ from 148 Google reviews.
Based in Ashland, 10 mi away
Ranked #22 because of its Google rating and review volume: 5.0★ from 148 Google reviews.
Based in San Jose, 11 mi away
Ranked #23 because of its Google rating and review volume: 4.8★ from 291 Google reviews.
Based in Fremont, 19 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based in Fremont, 19 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
National price ranges in USD, not adjusted for Los Gatos. 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 63 Los Gatos insulation contractors on ten 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. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, 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 Los Gatos data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |