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ContractorsRanked

Best Insulation Contractors in Ben Lomond, CA (2026)

45 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Ben Lomond: Los Gatos Top Insulation, CR Score 86/100; 4.9★ from 86 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Attic Pros, posts 24/7 hours; ranked #2 of 45.

  3. 3

    Most-reviewed: Service Champions, 3,407 Google reviews at 4.9★, the most of 45 ranked; ranked #3.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

45 Ben Lomond insulation contractors are ranked here by CR Score, from 8 published factors. 18 are open 24/7, 30 open Saturdays and 30 open Sundays, based on posted hours. The median Google rating is 5.0★ across 45 rated businesses.

Most of this list also appears on the Insulation contractors in San Jose ranking. See Insulation contractors in San Jose

Top 10 insulation contractors in Ben Lomond at a glance

Top 10 insulation contractors in Ben Lomond at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Los Gatos Top Insulation864.9★ (86)Los Gatos, 11 mi away24/7Overall
2Attic Pros844.7★ (104)San Jose, 19 mi away24/7Emergencies
3Service Champions834.9★ (3,407)San Jose, 24 mi away24/7Most reviews
4TRIO Heating, Air & Plumbing824.9★ (1,142)San Jose, 21 mi away24/7—
5911 Attic Insulation825.0★ (19)Fremont, 24 mi away24/7—
6Reactic Restoration825.0★ (16)Palo Alto, 24 mi away24/7—
7Attic City San Jose814.6★ (14)San Jose, 18 mi away24/7—
8Everlast Attic815.0★ (7)San Jose, 17 mi away24/7—
9Delta Spray Foam Insulation805.0★ (34)Mountain View, 21 mi awaySat · Sun · Evenings—
10Attic Masters Insulation Services805.0★ (7)Canoga Park, 19 mi away24/7—

The 45 best insulation contractors in Ben Lomond, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  2. #2 Attic Pros

    Based in San Jose, 19 mi away

    84/100CR Score

    Ranked #2 because of its Google rating and availability: 4.7★ from 104 Google reviews, open 24/7.

    • 4.7★ from 104 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    3071 Monterey Rd suit b, San Jose, CA 95111
    View profile for Attic Pros(800) 543-0382

  3. #3 Service Champions

    Based in San Jose, 24 mi away

    83/100CR Score

    Ranked #3 because of its Google rating and review volume: 4.9★ from 3,407 Google reviews, the most Google reviews on this list (3,407).

    • 4.9★ from 3,407 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2161 Del Franco St, San Jose, CA 95131
    View profile for Service Champions(408) 549-7376

  8. #8 Everlast Attic

    Based in San Jose, 17 mi away

    81/100CR Score

    Ranked #8 because of its Google rating and availability: 5.0★ from 7 Google reviews, open 24/7.

    • 5.0★ from 7 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1567 Alta Glen Dr suit 2, San Jose, CA 95125
    View profile for Everlast Attic(408) 981-5346

  11. #11 Trap Guard

    Based in Redwood Shores, 23 mi away

    80/100CR Score

    Ranked #11 because of its Google rating and availability: 5.0★ from 13 Google reviews, open 24/7.

    • 5.0★ from 13 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for Trap Guard(669) 302-8041

  22. #22 Attic Team

    Based in San Jose, 20 mi away

    76/100CR Score

    Ranked #22 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Insulation contractor”.

    • 5.0★ from 27 Google reviews
    Hours
    Mon–Fri 9 AM–6 PM · Sat closed · Sun 11 AM–6 PM
    Address
    2175 The Alameda #209, San Jose, CA 95126
    View profile for Attic Team(408) 750-9546

  23. #23 Attic Bros, Inc.

    Based in San Jose, 23 mi away

    75/100CR Score

    Ranked #23 because of its Google rating and trade focus: 4.9★ from 266 Google reviews, listed on Google as “Insulation contractor”.

    • 4.9★ from 266 Google reviews
    Hours
    Mon 8 AM–6 PM · Tue–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    1942 O'Toole Way, San Jose, CA 95131
    View profile for Attic Bros, Inc.(408) 990-6418

  24. #24 SJ Mold Removal

    Based in San Jose, 18 mi away

    75/100CR Score

    Ranked #24 because of its Google rating and availability: 5.0★ from 7 Google reviews, open 24/7.

    • 5.0★ from 7 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    356 Santana Row #4017, San Jose, CA 95128
    View profile for SJ Mold Removal(408) 543-2770

  25. #25 AttiCity

    Based in Redwood Shores, 20 mi away

    75/100CR Score

    Ranked #25 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Insulation contractor”.

    • 5.0★ from 67 Google reviews
    Hours
    Mon–Fri 9 AM–6:30 PM · Sat–Sun closed
    View profile for AttiCity(408) 544-0804

How much do insulation contractors cost in Ben Lomond?

National price ranges in USD, not adjusted for Ben Lomond. Each row names its basis and the month we checked it.

How much do insulation contractors cost in Ben Lomond?
JobLowTypicalHighBasisChecked
Attic insulation$1,700$2,100$2,500Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national rangeOctober 2026

How we ranked Ben Lomond insulation contractors

We scored 45 Ben Lomond 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Ben Lomond data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

Insulation contractors in Ben Lomond: frequently asked questions

Who is the best insulation contractor in Ben Lomond?

By CR Score, the highest-ranked insulation contractor in Ben Lomond, CA is Los Gatos Top Insulation with a CR Score of 86/100. It has 4.9★ from 86 Google reviews. It is open 24/7. Attic Pros (#2) and Service Champions (#3) follow. We ranked 45 insulation contractors on 8 factors, last updated October 22, 2026.

How many insulation contractors are there in Ben Lomond?

ContractorsRanked ranks 45 insulation contractors serving Ben Lomond, CA. Counts are as of October 2026.

Which insulation contractors in Ben Lomond are open 24/7?

18 ranked insulation contractors in Ben Lomond post 24/7 hours. The highest-ranked are Los Gatos Top Insulation (#1), Attic Pros (#2) and Service Champions (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which insulation contractors in Ben Lomond work on weekends?

30 of 45 ranked insulation contractors post Saturday hours and 30 post Sunday hours. The highest-ranked open Saturdays are Los Gatos Top Insulation (#1), Attic Pros (#2) and Service Champions (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does attic insulation cost in Ben Lomond?

Attic insulation typically costs $1,700 to $2,500, with $2,100 typical (Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range). This is a national range, not adjusted for Ben Lomond. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Ben Lomond insulation contractors have?

The median Google rating among 45 rated insulation contractors in Ben Lomond is 5.0★, with a median of 16 reviews. Service Champions has the most, 3,407 reviews, and ranks #3. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ContractorsRanked rank insulation contractors?

Each insulation contractor gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Do insulation contractors outside Ben Lomond count in this ranking?

Yes, if they are within 25 mi of the Ben Lomond city center, our service radius for insulation contractors. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.

Update log for Ben Lomond

  1. October 2026: CR Scores recalculated for 45 insulation contractors serving Ben Lomond.

More insulation contractors and Ben Lomond pages

Other trades in Ben Lomond