Top Rated Insulation Contractors Serving San Leandro, 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 Leandro including 94577, 94578 and 94579. These insulation specialists provide ceiling insulation and soundproofing insulation, and they also work on attic insulation, roof 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
2278
29008
1 of 1
Bay Valley Insulation installs and removes cellulose and fiberglass insulation for residential and commercial clients in Alameda, Contra Costa, Santa ...
Read More

Main Services

Insulation
loarrowgo

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
Hours CLOSED NOW
License:
546944
Learn how to choose a Insulation and more…

Diamond Certified Insulation Contractors Serve These San Leandro ZIP Codes

94577, 94578, 94579

Diamond Certified Insulation Contractors In San Leandro

Diamond Certified insulation contractors serving San Leandro are rated an average of 4.8 out of 5 stars based on 290 reviews of 21 rated insulation contractors.
Diamond Certified insulation contractors in San Leandro Avg. Star Rating.

    Map of San Leandro, CA

    San Leandro was founded in 1872, and today, your 89,830 neighbors enjoy horse racing, nature photography, olive oil tasting, scuba diving and beekeeping. San Leandrans use Diamond Certified insulation contractors for air sealing, fiberglass insulation, reflective insulation, soundproofing insulation, basement insulation, and more.

    Frequently Asked Questions for Insulation in San Leandro, CA
    Q: What are clients of Diamond Certified insulation contractors saying about contractors in San Leandro, 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 San Leandro residents?
    A: Diamond Certified insulation contractors use top-quality brands like CertainTeed, Dow, Insulfoam, Duro-Last Roofing and Fi-Foil Company.
    Q: What types of attic insulation do insulation contractors offer?
    A: Insulation contractors typically offer two types of radiant barrier insulation: foil-faced insulation and fiberglass-faced insulation. Foil-faced insulation is a reflective material that has a thin layer of aluminum foil on one side and often comes in a roll or sheet form. Fiberglass-faced insulation is a blanket of fiberglass fibers sandwiched between two layers of reflective material. This type of insulation is usually installed in attic spaces and is usually more effective than foil-faced insulation.
    Q: Can Diamond Certified insulation contractors work with Owens Corning products and similar items so I can get ceiling insulation in San Leandro?
    A: Yes, Diamond Certified insulation contractors in San Leandro 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 Leandro?
    A: Wall Insulation
    Duct Insulation
    Ceiling Insulation
    Wall Insulation
    Basement Insulation

    Go to Area Guide

    Our San Leandran's Guide to Local Quality

    San Leandro is our home and we love it! Here you’ll find the best spots to revisit, the San Leandro events schedule, local social media links, stories of our San Leandro area unsung heroes and much more. Connect with your neighbors and share what you love about our hometown. Plus, join us as a San Leandro Diamond Certified Preferred Member (always free).
    done

    Downtown San Leandro features numerous local shops, eateries and community events. Photo: Matt Gush