Electrical · E-RWXHK

Firestopping For Metal Conduit Penetration

Materials

Elements

Walls Partitions Ceilings Floors / Slabs Roof / Floor Openings

About this detail

Firestop caulk is installed on both sides of the rated wall, ceiling, or partition to seal metal conduit penetrations according to UL Through-Penetration Firestop System No.147 and ASTM E-814 (UL 1479) standards. The maximum annular space between the conduit and the penetration surface shall not exceed 3/16-inch. Caulk is forced into the annular space to the maximum extent possible until flush with the exterior of the penetration surface. The installation is finished with a 1/4-inch minimum bead of caulk applied to the perimeter of the conduit at its egress from the barrier.

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