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The Qualified Contractor Programs provide architects, Authorities Having Jurisdiction (AHJs), general contractors, manufacturers, building owners and others with a way to identify Contractors that comply with the Qualified Contractor Program Requirements.

For many years, UL has been classifying firestops and listing them in our Fire Resistance Directory. Now, through the UL Qualified Contractor program, UL provides the industry with a means of identifying contractor firms involved in the installation of firestops that have been assessed by an independent third party.

In Canada, Underwriters Laboratories of Canada (ULC) also provides a wide-range of certification services including certifying and listing firestops in the Canadian Fire Resistance Directory.  Firestop contractors interested in coverage for Canada can do so through ULC’s Qualified Firestop Contractor Program.

The Programs include Contractor firms who have demonstrated knowledge and a comprehensive management system that specifically focus on the selection and installation of firestop systems. The Contractor firm systems audited under this Program provide an integrated approach (demonstrated knowledge and management system) to controlling the processes in addressing architectural, AHJs and customer requirements.

Once the Contractor has met the Program Requirements, the Contractor is issued a Certificate effective for one year. Additionally, the Contractor may use the Qualified Firestop Contractor Program marking. Contractors are re-audited annually by UL to assess continued compliance with the program.

If you are a contractor, the following Qualified Contractor Program is available to you:

Contact Us

If you have any questions about or want to apply for the Qualified Firestop Contractor Program, please contact our sales team in the U.S. at 1.877.UL.HELPS (1.877.854.3577) or by email at