Top Rated Insulation Contractors Serving Berkeley, 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 Berkeley including 94704, 94703, 94702, 94705 and 94707. These insulation specialists provide blown in insulation and insulation removal, and they also work on radiant barrier insulation, crawl space insulation and wall 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 Sep 30, 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 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

  • Quick Connect
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License:
546944
Learn how to choose a Insulation and more…

Diamond Certified Insulation Contractors Serve These Berkeley ZIP Codes

94704, 94703, 94702, 94705, 94707, 94709, 94708, 94710, 94720, 94701, 94712

Diamond Certified Insulation Contractors In Berkeley

Diamond Certified insulation contractors serving Berkeley are rated an average of 4.8 out of 5 stars based on 305 reviews of 21 rated insulation contractors.
Diamond Certified insulation contractors in Berkeley Avg. Star Rating.

    Map of Berkeley, CA

    Berkeley was founded in 1878, and today, your 122,651 neighbors enjoy bonfire gatherings, ziplining, balloon rides, beachcombing and pottery classes. Berkeleyites use Diamond Certified insulation contractors for fiberglass insulation, crawl space insulation, roof insulation, vapor barrier installation, foam board insulation, and more.

    Frequently Asked Questions for Insulation in Berkeley, CA
    Q: What are clients of Diamond Certified insulation contractors saying about contractors in Berkeley, CA?
    A: Verified American Attic Customer, one of 60
    "They are pretty efficient and they have a reasonable price. They are efficient and they have a reasonable price." -Bill L.
    All Survey Responses for American Attic
    Q: What are some of the most popular brands that Diamond Certified insulation contractors use when working with Berkeley residents?
    A: Diamond Certified insulation contractors use top-quality brands like Icynene, Guardian Building Products, Kingspan Insulation, Applegate Insulation and Roxul.
    Q: What types of wall insulation do insulation contractors offer?
    A: Insulation contractors typically offer a variety of basement insulation solutions, including spray foam insulation, fiberglass batt insulation, loose-fill insulation, and rigid foam board insulation. Spray foam insulation is often the best choice for basement insulation, as it can be applied to virtually any surface, forming an airtight seal that prevents air infiltration. Fiberglass batts are also a popular choice and offer good thermal performance, while loose-fill and rigid foam board insulation are great options for insulating hard-to-reach areas.
    Q: Can Diamond Certified insulation contractors work with Owens Corning products and similar items so I can get blown in insulation in Berkeley?
    A: Yes, Diamond Certified insulation contractors can work with Owens Corning products and similar items to provide blown in insulation in Berkeley.
    Q: What did people search for when they wanted to find the best quality insulation contractors in Berkeley?
    A: Blown In Insulation
    Blown-In Insulation
    Crawl Space Insulation
    Fiberglass Insulation
    Blown In Insulation

    Go to Area Guide

    Our Berkeleyite's Guide to Local Quality

    Berkeley is our home and we love it! Here you’ll find the best spots to revisit, the Berkeley events schedule, local social media links, stories of our Berkeley area unsung heroes and much more. Connect with your neighbors and share what you love about our hometown. Plus, join us as a Berkeley Diamond Certified Preferred Member (always free).
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    This panoramic view of the University of California, Berkeley campus features the iconic Sather Tower (The Campanile) standing tall against the backdrop of the San Francisco Bay. Photo: coralimages