Top Rated Insulation Contractors Serving Los Altos, CA

If you really care about choosing a quality insulation contractor, we’re here for you. Here’s your access to the best insulation contractors serving Los Altos including 94024, 94022 and 94023. These insulation specialists provide soundproofing insulation and spray foam insulation, and they also work on foam board insulation, attic insulation and radiant barrier insulation. For 22 years we’ve conducted the most accurate ratings and deepest research of local contractors, so you’ll be confident in choosing.

  • Last Updated Dec 05, 2025
  • 29,008 people sourced companies in Insulation
    2,278 Verified Insulation Customers Surveyed
2278
29008
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Insul-Techs Inc

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Insul-Techs Inc provides a wide range of insulation services for residential and commercial clients in Contra Costa, Alameda, Santa Clara, San Francis...
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Main Services

Insulation
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Additional Services

Insulation Installation, Removal & Repair, Spray Foam & Fiberglass Insulation, Attic Cleanouts & Sanitation, Title 24 Requirements, Roof Insulation, Weatherization & Air Sealing, Soundproofing

Brands

Carlisle, CertainTeed, Greenfiber, Huntsman, International Fireproof Technology Inc, International Fireproof Technology Inc. (DC315 Paint), Natural Polymers, STI Firestop, Thermafiber

Coverage Areas

Contra Costa County, Alameda County, Santa Clara County, San Francisco County, Marin County, Solano County, Sonoma County, San Mateo County, Napa County

Established in 2016
Established in 2016
Residential & Commercial
Residential & Commercial
Free Quotes & Consultations
Free Quotes & Consultations
Text Responses Available
Text Responses Available
Diamond Certified Video Profile
Insulation - Insul-Techs Inc - Contra Costa County
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Luis Ramos, Owner-Insul-Techs Inc
Luis Ramos, Owner
Expert Contributions
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  • 120
  • Rating Surveys
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  • 26
  • Photos
    & Videos
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  • 5
  • Researched Articles
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    Hours CLOSED NOW
    License:
    1011102
    2 of 7

    Bay Valley Insulation

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    Bay Valley Insulation installs and removes cellulose and fiberglass insulation for residential and commercial clients in Alameda, Contra Costa, Santa ...
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    Main Services

    Insulation
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    Additional Services

    Cellulose & Fiberglass Insulation, Windows, Roof & Foundation Ventilation, Minor Duct Repairs, Energy Leakage Inspections

    Brands

    Greenfiber, Johns Manville

    Coverage Areas

    Alameda County, Contra Costa County, Santa Clara County, San Mateo County

    Diamond Certified Video Profile
    Insulation - Bay Valley Insulation - Alameda County
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    • 45
    • Rating Surveys
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    • 6
    • Photos
      & Videos
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    • 5
    • Researched Articles
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      License:
      546944
      3 of 7

      Los Gatos Roofing

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      Los Gatos Roofing offers residential reroofing services to clients in Southern San Mateo, Santa Clara and Santa Cruz Counties. With expertise across a...
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      Main Services

      Roofing
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      Insulation
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      Additional Services

      Residential Reroofing, Residential Roofing Repairs, Gutter Repair & Replacement

      Brands

      CertainTeed, GAF, Newpoint Concrete Roof Tile, Owens Corning

      Coverage Areas

      Southern San Mateo County, Santa Clara County, Santa Cruz County

      Established in 2001
      Established in 2001
      Residential Only
      Residential Only
      Free Quotes & Consultations
      Free Quotes & Consultations
      Live Phone Call Answers
      Live Phone Call Answers
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      Roofing - Los Gatos Roofing - Southern San Mateo County
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      Cameron Radonich, Marketing Director-Los Gatos Roofing
      Cameron Radonich, Marketing Director
      Expert Contributions
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      • 642
      • Rating Surveys
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      • 26
      • Photos
        & Videos
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      • 5
      • Researched Articles
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        Hours CLOSED NOW
        License:
        800707
        4 of 7

        San Jose Heating & Cooling

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        San Jose Heating & Cooling installs and removes insulation, repairs and installs HVAC systems, cleans attics and crawl spaces, and provides other serv...
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        Main Services

        Insulation
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        Heating & Air Conditioning

        Additional Services

        Insulation Removal & Installation, HVAC Installation & Repair, Air Duct Repair & Replacement, Attic & Crawl Space Cleaning, Radiant Barriers

        Brands

        Carrier

        Coverage Areas

        Bay Area

        Established in 2018
        Established in 2018
        Residential Only
        Residential Only
        Free Estimates
        Free Estimates
        Coupon on Website
        Coupon on Website
        Diamond Certified Video Profile
        Insulation - San Jose Heating & Cooling - Bay Area
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        Armando Garcia, Owner-San Jose Heating & Cooling
        Armando Garcia, Owner
        Expert Contributions
        ratings icon
        • 17
        • Rating Surveys
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        • 19
        • Photos
          & Videos
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        • 5
        • Researched Articles
          • Quick Connect
          Hours CLOSED NOW
          License:
          1060833
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          All Bay Insulation & HVAC

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          All Bay Insulation & HVAC cleans attics and crawl spaces, installs HVAC systems, and provides other services that are designed to improve indoor air q...
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          Main Services

          Attic & Crawl Space Cleaning
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          Insulation

          Additional Services

          Air Sealing, Whole-Home Insulation, Air Duct Cleaning, Repair and Replacement, HVAC Installation, Dryer Vent Cleaning, Energy Audits, Home Remodeling

          Brands

          Carrier, CertainTeed, Owens Corning

          Coverage Areas

          Bay Area

          Established in 2015
          Established in 2015
          Senior Discount
          Senior Discount
          Residential & Commercial
          Residential & Commercial
          Appointments Available
          Appointments Available
          Diamond Certified Video Profile
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          Diamond Certified Company Report
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          • 45
          • Rating Surveys
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          • 9
          • Photos
            & Videos
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          • 5
          • Researched Articles
            • Quick Connect
            Hours CLOSED NOW
            License:
            1042837
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            Service Champions

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            Service Champions is a premier provider of home services in Northern California. The company's expertise includes heating, cooling, plumbing, electric...
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            Main Services

            Air Duct Cleaning
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            Heating & Air Conditioning
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            Air Quality - Indoor
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            Insulation
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            Additional Services

            Furnaces and Air Conditioners, Ductwork and Insulation, Electrical, Plumbing, Water Filtration, Air Filtration

            Coverage Areas

            East Bay, South Bay, Sacramento Areas

            Residential Only
            Residential Only
            Weekend Hours
            Weekend Hours
            Free Estimates
            Free Estimates
            Live Phone Call Answers
            Live Phone Call Answers
            Diamond Certified Video Profile
            Air Duct Cleaning - Service Champions - East Bay
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            Kevin Comerford, Founder-Service Champions
            Kevin Comerford, Founder
            Expert Contributions
            ratings icon
            • 7374
            • Rating Surveys
            video icon
            • 33
            • Photos
              & Videos
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            • 5
            • Researched Articles
              • Quick Connect
              Hours CLOSED NOW
              License:
              817040
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              Atticare Construction

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              Atticare Construction is a family-owned business specializing in attic and crawl space services since 2012. The company focuses on what matters most i...
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              Main Services

              Attic & Crawl Space Cleaning
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              Insulation
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              Roofing
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              Additional Services

              Attic and Crawl Space Cleanup, Insulation Removal and Replacement, Rodent Proofing, Whole House Fan Installation

              Brands

              Knauf, Owens Corning

              Coverage Areas

              the San Francisco Bay Area, Greater Los Angeles, New Jersey

              Free Quotes & Consultations
              Free Quotes & Consultations
              Weekend Hours
              Weekend Hours
              Free Estimates
              Free Estimates
              Appointments Available
              Appointments Available
              Diamond Certified Video Profile
              Attic & Crawl Space Cleaning - Atticare Construction - the San Francisco Bay Area
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              Diamond Certified Company Report
              Sean Madar, CEO-Atticare Construction
              Sean Madar, CEO
              Expert Contributions
              ratings icon
              • 543
              • Rating Surveys
              video icon
              • 40
              • Photos
                & Videos
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              • 5
              • Researched Articles
                • Quick Connect
                Hours CLOSED NOW
                License:
                CA: 1051462,
                NJ: 13VH07811700
                Learn how to choose a Insulation and more…

                Diamond Certified Insulation Contractors Serve These Los Altos ZIP Codes

                94024, 94022, 94023

                Diamond Certified Insulation Contractors In Los Altos

                Diamond Certified insulation contractors serving Los Altos are rated an average of 4.5 out of 5 stars based on 641 reviews of 23 rated insulation contractors.
                Diamond Certified insulation contractors in Los Altos Avg. Star Rating.

                  Map of Los Altos, CA

                  Los Altos was founded in 1896, and today, your 28,976 neighbors enjoy off-roading, open mic nights, yoga, hot tubbing and beer tasting. Los Altans use Diamond Certified insulation contractors for fiberglass insulation, roof insulation, vapor barrier installation, basement insulation, insulation upgrades, and more.

                  Frequently Asked Questions for Insulation in Los Altos, CA
                  Q: What are clients of Diamond Certified insulation contractors saying about contractors in Los Altos, CA?
                  A: Verified Insulation Guru Inc. dba HVAC Guru Customer, one of 40
                  "They are a good company, and they provide a good service. The guy that did the walk through was professional, and he answered all of our questions." -Anna H.
                  All Survey Responses for Insulation Guru Inc. dba HVAC Guru
                  Verified Alcal Specialty Contracting, Inc. Customer, one of 185
                  "They are reliable and easy to work with. They are very responsive. They are reliable and easy to work with. They are very responsive." -K.C.I.
                  All Survey Responses for Alcal Specialty Contracting, Inc.
                  Verified Atticali Customer, one of 82
                  "They are pretty good and very helpful. The repair experience was pretty good and efficient. They had good knowledge of the repair and they told me how to repair it." -Eric S.
                  All Survey Responses for Atticali
                  Q: What are some of the most popular brands that Diamond Certified insulation contractors use when working with Los Altos residents?
                  A: Diamond Certified insulation contractors use top-quality brands like Guardian Building Products, Greenfiber, Reflectix, GAF and Pactiv.
                  Q: What types of reflective insulation do insulation contractors offer?
                  A: Insulation contractors offer a variety of rockwool insulation to meet different insulation needs. Common types of rockwool insulation include loose-fill insulation, batts, and rigid boards. Loose-fill insulation is designed to be poured into open cavities and attics, while batts are designed to be cut and fit between wall studs. Rigid boards are designed to insulate foundations, floors, walls, and roofs. Each type of rockwool insulation offers different levels of thermal resistance, making it an ideal choice for a variety of insulation needs.
                  Q: Can Diamond Certified insulation contractors work with Owens Corning products and similar items so I can get soundproofing insulation in Los Altos?
                  A: Yes, Diamond Certified insulation contractors can work with Owens Corning products and similar items to provide soundproofing insulation in Los Altos.
                  Q: What did people search for when they wanted to find the best quality insulation contractors in Los Altos?
                  A: Radiant Barrier Insulation
                  Soundproofing Insulation
                  Fiberglass Insulation
                  Pipe Insulation
                  Spray Foam Insulation

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