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Best Licensed Insulation Contractors in San Dimas, CA

5 insulation companies registered in San Dimas hold current CSLB licenses, verified against official records as of August 17, 2026. All 5 are listed below, ordered by years licensed.

How we chose: We identified 5 companies registered in San Dimas. 5 passed license verification. All 5 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.R E Drywall Contracting Inc.

    ✓ CSLB License #584494 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1990
    Phone
    (626) 336-9629

  2. 2.American Services Group Of California Inc.

    ✓ CSLB License #769061 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1999
    Phone
    (909) 592-6007

  3. 3.Martin A Rogers Inc.

    ✓ CSLB License #928843 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2009
    Phone
    (626) 449-0805

  4. 4.Wiltshire Urethane Foam Company

    ✓ CSLB License #1008304 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2015
    Phone
    (909) 599-1217

  5. 5.Wallcraft Drywall Inc.

    ✓ CSLB License #1064617 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2020
    Phone
    (909) 582-3900

Compare the top 5 at a glance

CompanyLicenseWorkers' compLicensed since
R E Drywall Contracting Inc.#584494On file1990
American Services Group Of California Inc.#769061On file1999
Martin A Rogers Inc.#928843On file2009
Wiltshire Urethane Foam Company#1008304On file2015
Wallcraft Drywall Inc.#1064617On file2020

Los Angeles County insulation licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 133 active C-2 insulation and acoustical licenses in Los Angeles County, 5 of them registered in San Dimas. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median San Dimas license has been held 17 years, and the longest-standing one dates to 1990. 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: 5 of San Dimas's 5 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: 133 of the county's 133 licenses carry the same $25,000 bond California sets by statute. 10 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 San Dimas: common questions

How many licensed insulation contractors are there in San Dimas?

5 active C-2 insulation and acoustical licenses are registered in San Dimas, out of 133 across Los Angeles County. 5 San Dimas-registered companies passed our license verification, and all 5 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. 5 active C-2 insulation and acoustical licenses are registered in San Dimas and 133 across Los Angeles County, the longest-standing issued in 1990. 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 5 of San Dimas's 5 currently carry. 10 Los Angeles County licenses expire within 90 days.

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