Head-of-wall fireblocks

Details Head-of-wall fireblocks Head-of-wall fireblocks

2010-03-18

2010-10-19

Chilcot, Jr., Richard E (Department: 3635)

Static structures (e.g., buildings)

Irreversibly reactive component

C052S481100, C052S302100, C052S241000, C052S001000

Reexamination Certificate

active

07814718

ABSTRACT:
The invention disclosed herein is directed to a fire retardant head-of-wall assembly configured to seal a linear head-of-wall construction joint or gap when exposed to a heat source such as a building fire. The inventive fire retardant head-of-wall assembly comprises a header track having an elongated intumescent strip affixed lengthwise on at least one of the outer sidewall surfaces of the header track. When exposed to a heat source such as a building fire, the intumescent strip is able to expand so as to at least partially fill the head-of-wall construction joint or gap; and in so doing, retard or prevent the spread of smoke and fire. The inventive fire retardant head-of-wall assembly has been certified as complaint with respect to Underwriters Laboratories, Inc.'s standards set forth in its Tests for Fire Resistance of Building Joint Systems—UL 2079.

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