74 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Cupertino: Los Gatos Top Insulation, CR Score 61/100; 4.9★ from 86 Google reviews; open 24/7.
Best for emergencies (open 24/7): Service Champions, posts 24/7 hours; ranked #2 of 74.
Most-reviewed: Service Champions, 3,407 Google reviews at 4.9★, the most of 74 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
74 Cupertino insulation contractors are ranked here by CR Score, from ten published factors. 27 are open 24/7, 52 open Saturdays and 49 open Sundays, based on posted hours. The median Google rating is 5.0★ across 74 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Los Gatos Top Insulation | 61 | 4.9★ (86) | Los Gatos, 8 mi away | 24/7 | Overall |
| 2 | Service Champions | 60 | 4.9★ (3,407) | San Jose, 9 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Attic Pros | 59 | 4.7★ (104) | San Jose, 11 mi away | 24/7 | — |
| 4 | Delta Spray Foam Insulation | 58 | 5.0★ (34) | Mountain View, 5 mi away | Sat · Sun · Evenings | — |
| 5 | TRIO Heating, Air & Plumbing | 58 | 4.9★ (1,142) | San Jose, 8 mi away | 24/7 | — |
| 6 | Attic Star | 58 | 4.9★ (156) | Redwood City, 14 mi away | Sat · Sun · Evenings | — |
| 7 | Attic Elite | 58 | 4.9★ (474) | Newark, 15 mi away | Sun | — |
| 8 | 911 Attic Insulation | 58 | 5.0★ (19) | Fremont, 9 mi away | 24/7 | — |
| 9 | Reactic Restoration | 58 | 5.0★ (16) | Palo Alto, 9 mi away | 24/7 | — |
| 10 | Attic City San Jose | 58 | 4.6★ (14) | San Jose, 6 mi away | 24/7 | — |
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, 9 mi away
Ranked #2 because of its Google rating and review volume: 4.9★ from 3,407 Google reviews, the most in Cupertino.
Based in San Jose, 11 mi away
Ranked #3 because of its Google rating and trade focus: 4.7★ from 104 Google reviews, listed on Google as “Insulation contractor”.
Based in Mountain View, 5 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 34 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 8 mi away
Ranked #5 because of its Google rating and review volume: 4.9★ from 1,142 Google reviews.
Based in Redwood City, 14 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 156 Google reviews, listed on Google as “Insulation contractor”.
Based in Newark, 15 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 474 Google reviews, listed on Google as “Insulation contractor”.
Based in Fremont, 9 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Insulation contractor”.
Based in Palo Alto, 9 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 6 mi away
Ranked #10 because of its Google rating and trade focus: 4.6★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based in Redwood Shores, 10 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 7 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 8 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 266 Google reviews, listed on Google as “Insulation contractor”.
Based in Redwood Shores, 4 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based in Santa Clara, 7 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based in Saratoga, 3 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Insulation contractor”.
Based in Canoga Park, 10 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 8 mi away
Ranked #18 because of its Google rating and trade focus: 4.6★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based in Redwood Shores, 4 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 6 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Insulation contractor”.
Based in Fremont, 14 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based in Fremont, 13 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 8 mi away
Ranked #23 because of its Google rating and review volume: 4.8★ from 291 Google reviews.
Based in Ashland, 8 mi away
Ranked #24 because of its Google rating and review volume: 5.0★ from 148 Google reviews.
Based in Hayward, 25 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 48 Google reviews, listed on Google as “Insulation contractor”.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 74 ranked insulation contractors here; the rest are on their profiles.
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 |
|---|---|---|
| Aim High Stucco & Plastering | 4.8★ (18) | In Cupertino |
| Attic Bros of Milpitas | 5.0★ (2) | 11 mi |
| Attic CA | In Cupertino | |
| Attic Total Cleaning & Proofing | 5.0★ (1) | In Cupertino |
| Attic Wise Cleaning | 5.0★ (2) | 12 mi |
| Atticali of Sunnyvale | 5.0★ (1) | In Cupertino |
| Bay Plastering | 3.0★ (2) | 24 mi |
| Bear Insulation and Services | 5.0★ (2) | 8 mi |
| Cupertino Insulation | In Cupertino | |
| Denali Builders & Design | 5.0★ (31) | In Cupertino |
| Insulation & Air Duct Crew | 5.0★ (2) | 23 mi |
| Jake's Roofing & Coatings | 5.0★ (1) | In Cupertino |
| My Steam Rug & Sofa Cleaning | 5.0★ (2) | 12 mi |
| Premier Roofing & Retro-Fit | 5.0★ (31) | In Cupertino |
| PRO ATTIC RESTORATION | 5.0★ (2) | 25 mi |
| Santa Clara A+ Insulation Service | 5.0★ (2) | In Cupertino |
| Saratoga Insulation | In Cupertino | |
| Signature Home Insulation and Rodent Control | 5.0★ (1) | In Cupertino |
| Silver Peak Construction Group Inc. | 5.0★ (2) | 6 mi |
| South Bay Heating and Cooling | 4.9★ (71) | In Cupertino |
National price ranges in USD, not adjusted for Cupertino. 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 74 Cupertino 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 Cupertino 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 |