92 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Woodside: Attic Pros, CR Score 61/100; 4.8★ from 1,938 Google reviews; open 24/7.
Best for emergencies (open 24/7): Reactic Restoration, posts 24/7 hours; ranked #3 of 92.
Most-reviewed: Service Champions, 3,407 Google reviews at 4.9★, the most of 92 ranked; ranked #13.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
92 Woodside insulation contractors are ranked here by CR Score, from ten published factors. 31 are open 24/7, 66 open Saturdays and 61 open Sundays, based on posted hours. The median Google rating is 5.0★ across 92 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Attic Pros | 61 | 4.8★ (1,938) | Oakland, 22 mi away | 24/7 | Overall |
| 2 | Attic Star | 61 | 4.9★ (156) | Redwood City, 4 mi away | Sat · Sun · Evenings | — |
| 3 | Reactic Restoration | 59 | 5.0★ (16) | Palo Alto, 6 mi away | 24/7 | Emergencies |
| 4 | Trap Guard | 58 | 5.0★ (13) | Redwood Shores, 5 mi away | 24/7 | — |
| 5 | Attic Elite | 58 | 4.9★ (474) | Newark, 15 mi away | Sun | — |
| 6 | Reactic Restoration | 58 | 5.0★ (12) | San Carlos, 6 mi away | 24/7 | — |
| 7 | Atticare USA | 58 | 4.8★ (439) | San Leandro, 21 mi away | Sat · Sun · Evenings | — |
| 8 | Insulation Solutions | 57 | 5.0★ (11) | San Mateo, 9 mi away | 24/7 | — |
| 9 | Los Gatos Top Insulation | 57 | 4.9★ (86) | Los Gatos, 21 mi away | 24/7 | — |
| 10 | Delta Spray Foam Insulation | 57 | 5.0★ (34) | Mountain View, 10 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: 4.8★ from 1,938 Google reviews, listed on Google as “Insulation contractor”.
Based in Redwood City, 4 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 156 Google reviews, listed on Google as “Insulation contractor”.
Based in Palo Alto, 6 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 in Redwood Shores, 5 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Insulation contractor”.
Based in Newark, 15 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 474 Google reviews, listed on Google as “Insulation contractor”.
Based in San Carlos, 6 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Insulation contractor”.
Based in San Leandro, 21 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 439 Google reviews, listed on Google as “Insulation contractor”.
Based in San Mateo, 9 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based in Los Gatos, 21 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “Insulation contractor”.
Based in Mountain View, 10 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 Oakland, 22 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 219 Google reviews, listed on Google as “Insulation contractor”.
Based in San Leandro, 21 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 151 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 20 mi away
Ranked #13 because of its Google rating and review volume: 4.9★ from 3,407 Google reviews, the most in Woodside.
Based in Dublin, 24 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 279 Google reviews, listed on Google as “Insulation contractor”.
Based in Hayward, 20 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 48 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 25 mi away
Ranked #16 because of its Google rating and trade focus: 4.7★ from 104 Google reviews, listed on Google as “Insulation contractor”.
Based in Fremont, 20 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Insulation contractor”.
Based in San Jose, 20 mi away
Ranked #18 because of its Google rating and review volume: 4.9★ from 1,142 Google reviews.
Based in Fremont, 18 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
Based in Fremont, 18 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “Insulation contractor”.
Based in San Mateo, 11 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based in Redwood Shores, 10 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based in Fremont, 18 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Insulation contractor”.
Based in Palo Alto, 6 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 39 Google reviews, listed on Google as “Insulation contractor”.
Based in Palo Alto, 8 mi away
Ranked #25 because of its Google rating and review volume: 4.9★ from 87 Google reviews.
#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 92 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 |
|---|---|---|
| Attic Bros of Milpitas | 5.0★ (2) | 20 mi |
| Attic Wise Cleaning | 5.0★ (2) | 20 mi |
| Atticali of Sunnyvale | 5.0★ (1) | 13 mi |
| Bear Insulation and Services | 5.0★ (2) | 15 mi |
| Brandon's Attic Control | 5.0★ (2) | 25 mi |
| Certified Pro Restorations, INC | 5.0★ (1) | 5 mi |
| Emerald Insulation & Acoustical Inc. | 5.0★ (2) | 25 mi |
| Equinox Roofing Solutions | 5.0★ (1) | 18 mi |
| Insulation & Air Duct Crew | 5.0★ (2) | 18 mi |
| My Steam Rug & Sofa Cleaning | 5.0★ (2) | 3 mi |
| Panda Heating & Cooling | 3.5★ (2) | 22 mi |
| Premium Shield | 5.0★ (1) | 16 mi |
| PRO ATTIC RESTORATION | 5.0★ (2) | 20 mi |
| San Mateo Attic Insulation Now | 5.0★ (1) | 3 mi |
| Santa Clara A+ Insulation Service | 5.0★ (2) | 20 mi |
| SF Bay Attic Cleaning | 5.0★ (1) | 11 mi |
| Silicon Thermal | 4.0★ (1) | 10 mi |
| Silver Peak Construction Group Inc. | 5.0★ (2) | 20 mi |
| Tigre Firestop & Insulation | 5.0★ (1) | 18 mi |
| True Arc Insulation | 5.0★ (1) | 15 mi |
National price ranges in USD, not adjusted for Woodside. 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 92 Woodside 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 Woodside 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 |