Abstract: A mounting rail for mounting tiles to a backing system of a building wall structure comprises a tile support linked with a back-fixing rail via a tile-support carrier. The tile-support carrier comprises an acoustic damper between the tile support and the back-fixing rail. This impedes the transmission of acoustic energy from the tiles to the backing system, and so improves the acoustic insolation while the mechanical stiffness of the tile-support carrying arm is maintained. The acoustic damper may be provided in the form of one or more angled bends, apertures, an obtusely angled connection of the tile-support carrier to the back-fixing rail or a connection of the tile-support carrier at an upper or lower end of the back-fixing rail, or combinations of two or more of these features.

Abstract: A plank (10) for a fagade system comprises a facia (12), a joining lip (20), and a hook (30). The joining lip (20) is recessed behind and extends alongside the facia (12) to overlap with an adjacent plank. The hook 30 extends behind the facia to engage a wall-mounted retainer (38, FIG. 3D). The plank 10 comprises a rail 26 to conceal the hook (30). In one aspect, the rail 26 extends beyond the hook to abut the wall, to restrict a tilt of the plank. In one aspect, the joining lip 20 comprises alignment features (22) for positioning another retainer (40, FIG. 3D). In one aspect, the facia (12) comprises blind grooves (52, FIG. 8B) mimicking inter-plank interstitial grooves. The aspects individually and combined reduce the resources required for covering a large wall area with aligned cladding facias.