Firestop sumital

Hi Konny,

Thank you for reaching out to the Hilti Fire Protection Design Team to assist you with your firestop engineering needs. Based off the your attached photo, this floor/ceiling assembly looks a bit unique and wouldn't fall within the parameters of our listed Hilti systems. We would need to evaluate this 1" CPVC passing through this floor/ceiling assembly through an Engineering Judgment, which will be a custom detail showing your exact application with the firestop components required to maintain the stated ratings. We can also address any FT rating questions/requirements you have for this condition as well.

The HILTI CONSTRUCTION PLATFORM (HCP) is the home for all of your Fire Protection Engineering needs, including Engineering Judgment requests. You can find more information on how to access this new platform here: hilti.com/ej (US) or hilti.ca/ej (Canada.)

Along with HCP, Hilti is excited to announce our new mobile app for all your firestop needs: Hilti Firestop Selector. Using the Firestop Selector app gives you easy access to the Hilti Fire Protection Design Team from the jobsite, on the road, or in the office to request a new EJ, an EJ Revision, or ask a Question anytime, anywhere. You can download the app using the appropriate link below.

Hilti Firestop Selector App – Google Play Store

Hilti Firestop Selector App – Apple App Store

If you have any questions, please reach out to our customer service team at 1-800-879-8000 (US) or 1-800-363-4458 (Canada) for assistance or use the following link to access the How-To Videos for HCP on YouTube: Hilti Fire Protection Software How-To Videos Playlist


Thank you,
Anthony Nguyen
Fire Protection Engineer