Patent attributes
A composite fire-rated gasket for use in building construction is disclosed that comprises, in a multi-layered stacked configuration, the following elements: (1) a flexible flat sheet metal strip having a width and opposing first and second faces; (2) an intumescent strip adjacent to the first face of the sheet metal strip; (3) a first foamed plastic strip adjacent to the second face of the sheet metal strip; (4) a second foamed plastic layer adjacent to the intumescent strip; and (5) an elongated non-foamed protective material layer adjacent to the second foamed plastic layer. In a preferred embodiment, the flat metal strip is in the form of a spine having a plurality of ribs outwardly extending therefrom. The composite fire-rated gaskets and related building construction assemblies disclosed herein slow and impede the spread of fire and smoke (during a fire) and also reduces sound transmission between adjacent rooms in a building.
