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Polyurethane Expandable Foam - Use Of

Is it acceptable to use fire rated polyurethane expandable foam?

Any examples are for illustrative purposes only.

NFPA 101 (2012 edition) Life Safety Code requires penetrations in fire-rated walls and assemblies to be sealed with a product that is UL-Listed for the appropriate fire rating of the wall or assembly.   

Products that are marketed as "fire block," such as polyurethane expandable foam, are typically not UL listed for firestop application in a fire rated wall.  These products are used in residential construction to restrict air movement in a wall cavity.

When choosing a fire stop product, look for products that are marketed for commercial use.  Keep documentation on hand of the fire stop product and its UL Listing for surveyor review and inspection.
Reference LS.02.01.10 EP14
Manual: Nursing Care Center
Chapter: Life Safety LS
First published date: April 11, 2016 This Standards FAQ was first published on this date.
This page was last updated on October 29, 2021
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