Top Rated Insulation Contractors Serving San Jose, 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 San Jose including 95123, 95127, 95111, 95112 and 95122. These insulation specialists provide ceiling insulation and basement insulation, and they also work on energy-efficient insulation, radiant barrier insulation and attic 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
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29008
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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
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  • 5
  • Researched Articles
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    License:
    546944
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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
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    • 7374
    • Rating Surveys
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    • 33
    • Photos
      & Videos
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    • 5
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      License:
      817040
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      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
      Diamond Certified Video Profile
      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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        License:
        800707
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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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        • 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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          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
            • Quick Connect
            Hours CLOSED NOW
            License:
            1011102
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            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
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            • 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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              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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              Sean Madar, CEO-Atticare Construction
              Sean Madar, CEO
              Expert Contributions
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              • 543
              • Rating Surveys
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              • 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 San Jose ZIP Codes

                95123, 95127, 95111, 95112, 95122, 95116, 95125, 95124, 95148, 95136, 95132, 95129, 95121, 95120, 95128, 95126, 95118, 95131, 95117, 95133, 95134, 95135, 95138, 95110, 95130, 95119, 95139, 95113, 95101, 95103, 95106, 95108, 95109, 95115, 95141, 95150, 95151, 95152, 95153, 95154, 95155, 95156, 95157, 95158, 95159, 95160, 95161, 95164, 95170, 95172, 95173, 95190, 95191, 95192, 95193, 95194, 95196

                Diamond Certified Insulation Contractors In San Jose

                Diamond Certified insulation contractors serving San Jose are rated an average of 4.5 out of 5 stars based on 696 reviews of 23 rated insulation contractors.
                Diamond Certified insulation contractors in San Jose Avg. Star Rating.

                  Map of San Jose, CA

                  San Jose was founded in 1777, and today, your 1,025,350 neighbors enjoy galleries, dance parties, paint nights, forest wandering and art markets. San Joseans use Diamond Certified insulation contractors for fiberglass insulation, pipe insulation, ceiling insulation, thermal insulation, vapor barrier installation, and more.

                  Frequently Asked Questions for Insulation in San Jose, CA
                  Q: What are clients of Diamond Certified insulation contractors saying about contractors in San Jose, CA?
                  A: Verified Insulation Guru Inc. dba HVAC Guru Customer, one of 40
                  "They did a clean job, and the owner was great. He helped me out. Just the people, they cleaned up well, and they did a good job." -Donald B.
                  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 San Jose residents?
                  A: Diamond Certified insulation contractors use top-quality brands like Icynene, Duro-Last Roofing, Greenfiber, Applegate Insulation and Fi-Foil Company.
                  Q: What types of crawl space insulation do insulation contractors offer?
                  A: Insulation contractors typically offer a variety of ceiling insulation options, such as fiberglass, cellulose, rock wool, and spray foam insulation. Fiberglass insulation is the most common and cost-effective option, offering excellent thermal performance and sound absorption. Cellulose insulation is made from recycled paper products and is known for its fire and pest-resistant properties. Rock wool insulation is another popular option, providing strong acoustic insulation and fire resistance. Spray foam insulation provides superior air sealing and insulation performance, but it is more expensive than the other types.
                  Q: Can Diamond Certified insulation contractors work with Owens Corning products and similar items so I can get ceiling insulation in San Jose?
                  A: Yes, Diamond Certified insulation contractors in San Jose can work with Owens Corning products and similar items to provide ceiling insulation.
                  Q: What did people search for when they wanted to find the best quality insulation contractors in San Jose?
                  A: Spray Foam Insulation
                  Spray Foam Insulation
                  Energy-Efficient Insulation
                  Thermal Insulation
                  Basement Insulation

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                  Our San Josean's Guide to Local Quality

                  San Jose is our home and we love it! Here you’ll find the best spots to revisit, the San Jose events schedule, local social media links, stories of our San Jose area unsung heroes and much more. Connect with your neighbors and share what you love about our hometown. Plus, join us as a San Jose Diamond Certified Preferred Member (always free).
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                  This aerial shot of downtown San Jose includes the historic Bank of Italy building and the expansive Santa Clara Valley in the distance. Photo: Dreamframer

                  View Our San Josean's Guide to Local Quality
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