US Patent 9200439 Firewall system and method

A firewall system includes a wall stud; a wall covering; and an expansion furring. An expansion furring can have a top having first and second top edges; a side, having a side edge, and extending from one of the first and second top edges; and a furring flange, extending from the side edge, and being formed of one or more deformable materials. The furring flange can be attached to the wall stud and to the wall covering with the expansion furring being disposed between the wall stud and furring. The furring flange absorbs, via deformation, at least a portion of movement of the wall stud due to heat-based expansion of the wall stud.