b'Fire Rated Wall Systems - Fire Resistance Level (FRL)Weathertex cladding can achieve FRL ratings up to and including 120/120/120 when constructed with additional fire rated linings. Weathertex can be conveniently installed over a wide range of fire rated wall systems detailed by the relevant system manufacturer such as CSR Gyprock and Boral. Advice of the system manufacturer should be sought on the appropriate system for your project.All walls must be designed for the applied loads. For load-bearing walls and walls subject to wind pressures, walls shall be designed to the appropriate Australian Standards or construction manuals. Designers should consider Axial Capacity Reduction (ACR) from charring or loss of steel strength due to heat.Guidance on structural design can be sought from the relevant FRL system manufacturer.Standard installation requirements in this installation guide apply to the installation of the Weathertex external cladding component. Fastener lengths must be increased by the thickness of all packing materials used between the frame and Weathertex.Example FRL SystemsNote: Battens shown in diagrams are optional. Timber studs at maximum 600mm centres Direct/ Cavity Fix - 30/30/30 (from outside only)Direct/ Cavity fix - 60/60/60 (from outside only)**ACR Group 2External Wall Side External Wall SideWeathertex 9.5mm Cladding direct/cavity fix Weathertex 9.5mm Cladding direct/cavity fixVapour Permeable Membrane Vapour Permeable Membrane1 layer of 16mm Gyprock Fyrchek MR Plasterboard 1 layer of 16mm Gyprock Fyrchek MR PlasterboardInternal Wall Side Internal Wall Side1 layer of 6mm CeminSeal Wallboard 1 layer of 10mm Gyprock Plus PlasterboardDirect/ Cavity Fix - 90/90/90 (from outside only)Direct/ Cavity Fix - 120/120/120 (from outside only)External Wall Side External Wall SideWeathertex 9.5mm Cladding direct/cavity fix Weathertex 9.5mm Cladding direct/cavity fixVapour Permeable Membrane Vapour Permeable Membrane2 layers of 13mm Gyprock Fyrchek MR Plasterboard 2 layers of 16mm Gyprock Fyrchek MR PlasterboardInternal Wall Side Internal Wall Side1 layer of 10mm Gyprock Plus Plasterboard 1 layer of 10mm Gyprock Plus PlasterboardFor Steel frames: additional allowed systems are listed in the Redbook AddendumFor FRL protection from both sides: additional allowed systems are listed in the Redbook AddendumFor CSR systems, alternative claddings can be:Direct fixed using fixings not greater than 10 gauge, OrStructural batten fixed using fixings not greater than 14 gaugeBattens of non-structural thickness or type should be ignored and the cladding treated as a direct fix scenario by simply using 10 gauge fixing of increased length in order to fix back to the structural frameAll fixings that penetrate fire linings must fix directly into a framing element14'