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Best Licensed Insulation Contractors in Riverside, CA

23 insulation companies registered in Riverside hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by years licensed.

How we chose: We identified 23 companies registered in Riverside. 23 passed license verification. The 8 below are the top-ranked of those. 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. Verified
    August 17, 2026
    Licensed since
    1987
    Phone
    (951) 682-3336
  2. Verified
    August 17, 2026
    Licensed since
    1989
    Phone
    (951) 369-1332
  3. Verified
    August 17, 2026
    Licensed since
    1990
    Phone
    (951) 776-9100
  4. Verified
    August 17, 2026
    Licensed since
    1994
    Phone
    (951) 905-5116
  5. Verified
    August 17, 2026
    Licensed since
    1994
    Phone
    (951) 681-9790
  6. Verified
    August 17, 2026
    Licensed since
    1998
    Phone
    (909) 478-3422
  7. Verified
    August 17, 2026
    Licensed since
    2006
    Phone
    (951) 776-4616
  8. Verified
    August 17, 2026
    Licensed since
    2007
    Phone
    (951) 784-5028

Compare the top 6 at a glance

CompanyLicenseWorkers' compLicensed since
Hasco Heating Airconditioning Service Company Inc.#519360On file1987
National Paving Company Inc.#583376On file1989
J Francis Company#585103Expired on file1990
Berry Roofing Inc.#691947On file1994
Wilson Acoustical Ceilings#699454On file1994
Accurate Acoustics Inc.#756641On file1998

Riverside County insulation licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 69 active C-2 insulation and acoustical licenses in Riverside County, 23 of them registered in Riverside. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Riverside license has been held 9 years, and the longest-standing one dates to 1987. 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: 17 of Riverside's 23 licenses (73.9%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 69 of the county's 69 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 Riverside: common questions

How many licensed insulation contractors are there in Riverside?

23 active C-2 insulation and acoustical licenses are registered in Riverside, out of 69 across Riverside County. 23 Riverside-registered companies passed our license verification, and the 8 on this page are the top-ranked of those. 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. 23 active C-2 insulation and acoustical licenses are registered in Riverside and 69 across Riverside County, the longest-standing issued in 1987. 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 17 of Riverside's 23 currently carry. 4 Riverside County licenses expire within 90 days.

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