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Best Licensed Insulation Contractors in Fontana, CA

4 insulation companies registered in Fontana hold current CSLB licenses, verified against official records as of August 17, 2026. All 4 are listed below, ordered by years licensed.

How we chose: We identified 4 companies registered in Fontana. 4 passed license verification. All 4 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.Southcoast Acoustical Interiors Inc.

    ✓ CSLB License #738787 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1997
    Phone
    (909) 428-2600

  2. 2.Dlab Drywall Inc.

    ✓ CSLB License #986090 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2013
    Phone
    (909) 527-4567

  3. 3.Sahuaro Insulation Services

    ✓ CSLB License #1038848 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2018
    Phone
    (909) 232-5205

  4. 4.Alta Insulation & Construction Inc.

    ✓ CSLB License #1078786 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2021
    Phone
    (909) 717-1566

Compare the top 4 at a glance

CompanyLicenseWorkers' compLicensed since
Southcoast Acoustical Interiors Inc.#738787Exempt or none on file1997
Dlab Drywall Inc.#986090Exempt or none on file2013
Sahuaro Insulation Services#1038848Exempt or none on file2018
Alta Insulation & Construction Inc.#1078786On file2021

San Bernardino County insulation licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 53 active C-2 insulation and acoustical licenses in San Bernardino County, 4 of them registered in Fontana. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Fontana license has been held 8 years, and the longest-standing one dates to 1997. 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: 1 of Fontana's 4 licenses (25.0%) carries a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 53 of the county's 53 licenses carry the same $25,000 bond California sets by statute. 4 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 Fontana: common questions

How many licensed insulation contractors are there in Fontana?

4 active C-2 insulation and acoustical licenses are registered in Fontana, out of 53 across San Bernardino County. 4 Fontana-registered companies passed our license verification, and all 4 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. 4 active C-2 insulation and acoustical licenses are registered in Fontana and 53 across San Bernardino County, the longest-standing issued in 1997. 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 1 of Fontana's 4 currently carry. 4 San Bernardino County licenses expire within 90 days.

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