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Best Licensed Insulation Contractors in Clayton, CA

3 insulation companies registered in Clayton hold current CSLB licenses, verified against official records as of August 17, 2026. All 3 are listed below, ordered by years licensed.

How we chose: We identified 3 companies registered in Clayton. 3 passed license verification. All 3 are listed below. Our methodology

We earn a fee when you call businesses through numbers on this site. This never affects who is listed or how they rank.

  1. 1.G N Henley Inc.

    ✓ CSLB License #373161 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1979
    Phone
    (925) 557-6898

  2. 2.J & R Floor Services

    ✓ CSLB License #714096 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1995
    Phone
    (925) 998-0735

  3. 3.Christian Hvac

    ✓ CSLB License #1029082 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2017
    Phone
    (925) 695-4074

Compare the top 3 at a glance

CompanyLicenseWorkers' compLicensed since
G N Henley Inc.#373161On file1979
J & R Floor Services#714096On file1995
Christian Hvac#1029082On file2017

Contra Costa County insulation licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 42 active C-2 insulation and acoustical licenses in Contra Costa County, 3 of them registered in Clayton. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Clayton license has been held 30 years, and the longest-standing one dates to 1979. California law requires workers' compensation cover for C-2 licensees, so it is a legal baseline rather than a way to tell two contractors apart: 3 of Clayton's 3 licenses (100.0%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 42 of the county's 42 licenses carry the same $25,000 bond California sets by statute. 2 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.

Insulation Contractors in Clayton: common questions

How many licensed insulation contractors are there in Clayton?

3 active C-2 insulation and acoustical licenses are registered in Clayton, out of 42 across Contra Costa County. 3 Clayton-registered companies passed our license verification, and all 3 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.

Does California license insulation contractors?

Yes. California licenses contractors by classification, and C-2 is the CSLB classification that authorises this work. 3 active C-2 insulation and acoustical licenses are registered in Clayton and 42 across Contra Costa County, the longest-standing issued in 1979. Only CLEAR, unexpired licenses appear here.

How do I check an insulation contractor's license in California?

Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which California requires of C-2 licensees and 3 of Clayton's 3 currently carry. 2 Contra Costa County licenses expire within 90 days.

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