BUILDING FAÇADE WITH A SHEATHING INCLUDING A FIRE BARRIER

A sheathing of an outer surface of a building façade (4) is disclosed wherein the sheathing comprises a plurality of mounting rails (3, 5), each supported by the building façade (4), a plurality of façade elements (1) being fixed to the mounting rails (3, 5) to form a substantially closed part of a building envelope, and wherein the sheathing further comprises at least one heat-expanding fire barrier (7) extending horizontally and comprising an intumescent material (9), so as to ensure that the space (8) between the outer surface (10) of the building façade (4) and the façade elements (1) can be filled by the fire barrier (7) in case of fire.