Top Rated Insulation Contractors Serving Gilroy, 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 Gilroy including 95020 and 95021. These insulation specialists provide spray foam insulation and reflective insulation, and they also work on soundproofing insulation, insulation removal and fiberglass 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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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
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    Hours CLOSED NOW
    License:
    1042837
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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
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      License:
      CA: 1051462,
      NJ: 13VH07811700
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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
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      • 5
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        License:
        800707
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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
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          Hours CLOSED NOW
          License:
          1060833
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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
            & Videos
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          • 5
          • Researched Articles
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            Hours CLOSED NOW
            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
            • Researched Articles
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              Hours CLOSED NOW
              License:
              817040
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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
                Learn how to choose a Insulation and more…

                Diamond Certified Insulation Contractors Serve These Gilroy ZIP Codes

                95020, 95021

                Diamond Certified Insulation Contractors In Gilroy

                Diamond Certified insulation contractors serving Gilroy are rated an average of 4.5 out of 5 stars based on 609 reviews of 23 rated insulation contractors.
                Diamond Certified insulation contractors in Gilroy Avg. Star Rating.

                  Map of Gilroy, CA

                  Gilroy was founded in 1798, and today, your 51,450 neighbors enjoy paintball, archery, folk dancing, lake exploring and pottery classes. Gilroyans use Diamond Certified insulation contractors for pipe insulation, rockwool insulation, wall insulation, reflective insulation, blown-in insulation, and more.

                  Frequently Asked Questions for Insulation in Gilroy, CA
                  Q: What are clients of Diamond Certified insulation contractors saying about contractors in Gilroy, CA?
                  A: Verified Insulation Guru Inc. dba HVAC Guru Customer, one of 40
                  "They have always done quality work, and they fit me in their schedule pretty quickly. I like my sales representative, Cory. He gives me good advice, and he is always available." -V.C.
                  All Survey Responses for Insulation Guru Inc. dba HVAC Guru
                  Verified Atticali Customer, one of 82
                  "They are reliable, dependable and do good work. They take before and after pictures, and they will come back for warranty issues. They come out when we really need them and for emergencies." -Kim R.
                  All Survey Responses for Atticali
                  Verified Alcal Specialty Contracting, Inc. Customer, one of 185
                  "I would just say that we had a great experience. They were very helpful. They have a solution to almost everything they found during their inspection." -Eric B.
                  All Survey Responses for Alcal Specialty Contracting, Inc.
                  Q: What are some of the most popular brands that Diamond Certified insulation contractors use when working with Gilroy residents?
                  A: Diamond Certified insulation contractors use top-quality brands like CertainTeed, Henry Company, Reflectix, Thermafiber and Pactiv.
                  Q: What types of radiant barrier insulation do insulation contractors offer?
                  A: Insulation contractors typically offer two types of radiant barrier insulation: reflective insulation and mass-loaded vinyl insulation. Reflective insulation consists of two outer sheets of aluminum foil that are separated by a center layer of air, which helps to keep warm air from passing through walls or leaky roofs. Mass-loaded vinyl insulation, on the other hand, consists of a thick vinyl material that is used to block sound transmission and also helps to reduce heat transfer. Both types of insulation can help to reduce energy costs and provide greater comfort.
                  Q: Can Diamond Certified insulation contractors work with Owens Corning products and similar items so I can get spray foam insulation in Gilroy?
                  A: Yes, Diamond Certified insulation contractors can work with Owens Corning products and similar items to provide spray foam insulation in Gilroy.
                  Q: What did people search for when they wanted to find the best quality insulation contractors in Gilroy?
                  A: Fiberglass Insulation
                  Radiant Barrier Insulation
                  Spray Foam Insulation
                  Soundproofing Insulation
                  Reflective Insulation

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