Firestop Applications Engineering
Information on firestop UL systems, specifications, CAD details, code compliance, and installation information is available instantaneously on our website.
STI Firestop Technical Support
We also offer live, professional engineering technical support - available M-F, during our normal business hours 8AM–6PM EST.
Toll Free: 1-800-992-1180 ext 2
Office: (908) 526-8000 ext 2
Fax: (908) 526-9623
You can also contact us via email for professional engineering and application support including information on safety, jobsite troubleshooting, and alternative solutions to immediate firestop compliance issues.