Head-of-wall fireblock systems and related wall assemblies

Details Head-of-wall fireblock systems and related wall assemblies Head-of-wall fireblock systems and related wall assemblies

2008-08-22

2011-11-15

Chapman, Jeanette E (Department: 3633)

Static structures (e.g., buildings)

Facer held by stiffener-type frame

Facer back abuts and conceals frame

C052S481100, C052S831000, C052S846000

Reexamination Certificate

active

08056293

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 and above a centrally located and outwardly protruding lengthwise corrugated groove. 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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