Fire-rated joint component and wall assembly

Abstract

A fire-rated component for a fire-rated joint, such as a head-of-wall assembly, includes an elongate body having at least a first layer, which can be in the form of a polymer profile. A second layer can be or include a foil lining and a third layer can be or include an intumescent material. The elongate body, such as the first layer, defines an air gap. The foil lining and/or the intumescent material can be positioned within the air gap. A planar lower portion of the first layer of the elongate body is positioned between a header track and a wallboard in the fire-rated joint. A non-planar upper portion of the first layer of the elongate body is positioned at least partially within a deflection gap of the wall assembly and sealingly engages the ceiling.

1 . (canceled) 
     
     
         2 . A fire-rated component for sealing a head of wall gap, the fire-rated component comprising:
 an elongate body comprising a lower planar portion and an upper planar portion, the elongate body configured to be secured to a flange of a header track of a wall assembly between a wall board and a flange of the header track within the head of wall gap such that the wall board at least partially overlaps the lower planar portion of the elongate body in an open position and a closed position of the head of wall gap, the elongate body further comprising:
 a non-metal material layer; 
 a metal sheet layer attached to the non-metal material layer; 
 a heat-expandable fire-resistant material layer attached to the metal sheet layer; 
 a foam layer comprising an adhesive configured to secure the elongate body to the flange of the header track; and 
 a release layer that covers the adhesive of the foam layer. 
   
     
     
         3 . The fire-rated component of  claim 2 , wherein the heat-expandable fire-resistant material layer covers an entirety of the metal sheet layer in a height direction of the elongate body. 
     
     
         4 . The fire-rated component of  claim 3 , wherein the non-metal material layer extends beyond each edge of the heat-expandable fire-resistant material layer in the height direction of the elongate body. 
     
     
         2 . The fire-rated component of claim  2 , wherein a thickness of the heat-expandable fire-resistant material layer is greater than a thickness of the metal sheet layer. 
     
     
         6 . The fire-rated component of  claim 2 , the non-metal material layer extends over the heat-expandable fire-resistant material layer. 
     
     
         7 . The fire-rated component of  claim 2 , wherein the non-metal material layer comprises vinyl, polyethylene, or polyvinyl chloride. 
     
     
         8 . The fire-rated component of  claim 2 , wherein the non-metal material layer is a foam layer. 
     
     
         9 . The fire-rated component of  claim 8 , wherein the heat-expandable fire-resistant material layer comprises an intumescent material. 
     
     
         10 . The fire-rated component of  claim 2 , further comprising an air gap between a portion of the non-metal material layer and the heat-expandable fire-resistant material layer. 
     
     
         11 . The fire-rated component of  claim 2 , wherein the metal sheet layer is attached to the non-metal material layer with an adhesive. 
     
     
         12 . The fire-rated component of  claim 11 , wherein the adhesive is an adhesive tape. 
     
     
         13 . The fire-rated component of  claim 2 , wherein the heat-expandable fire-resistant material layer is attached to the metal sheet layer with an adhesive. 
     
     
         14 . The fire-rated component of  claim 13 , wherein the heat-expandable fire-resistant material layer is an adhesive tape. 
     
     
         15 . A fire-rated head-of-wall assembly that allows dynamic movement, comprising:
 a header track coupled to an overhead structure, the header track having a web and first and second flanges extending from the web in a same direction away from the overhead structure, wherein the web and the first and second flanges define an interior space;   a stud coupled to the header track, an upper end of the stud located in the interior space between the first and second flanges;   a wall board coupled to the stud;   a deflection gap formed between an upper end of the wall board and the overhead structure, the deflection gap being variable between a closed position and an open position relative to one another;   a fire-rated component for sealing the deflection gap, the fire-rated component comprising:
 a non-metal layer; 
 a metal layer; 
 a foam layer; and 
 a heat-expandable fire-resistant material layer; 
   wherein the fire-rated component is positioned between the wall board and one of the first and second flanges of the header track within the deflection gap, wherein the wall board at least partially overlaps the fire-rated component in the open position and the closed position of the deflection gap.   
     
     
         16 . The fire-rated head-of-wall assembly of  claim 15 , wherein the heat-expandable fire-resistant material layer is located between the metal layer and the one of the first and second flanges. 
     
     
         17 . The fire-rated head-of-wall assembly of  claim 15 , wherein the non-metal layer is located between the wall board and the metal layer. 
     
     
         18 . The fire-rated head-of-wall assembly of  claim 15 , wherein the fire-rated component contacts the overhead structure. 
     
     
         19 . The fire-rated head-of-wall assembly of  claim 15 , wherein the wall board at least partially overlaps the metal layer in the open position. 
     
     
         20 . The fire-rated head-of-wall assembly of  claim 15 , wherein the fire-rated component has a height of between one to four inches. 
     
     
         15 . The fire-rated head-of-wall assembly of claim  15 , wherein the non-metal layer is a foam layer.