b'1.4.5LENGTH OF WALL REQUIREMENTSFor continuous walls less than 5.5m, all product specific joining methods may be used. On continuous walls greater than 5.5m, traditional & aluminium joining methods must only be used. For continuous walls greater than 11m long, engineers/designers must assess additional requirements for frame and cladding control joints, alternatively please call Weathertex (Ph 1800 040 080) for additional advice. NOTES:For specific joining methods applicable to each product, refer to specific product section.1.4.6MOISTURE MANAGEMENT AND FLASHINGWeathertex weatherboards are intended for use as internal and external cladding in standard stud wall systems. It is the responsibility of the Designer or Specifier to identify moisture related risks associated with any particular building design. Wall construction and design must effectively manage moisture, considering both the interior and exterior environments of the building, particularly in buildings that have a high risk of wind driven rain or are artificially heated or cooled. Adequate design of ventilation, flashings and moisture management systems must ensure that the wall cavity and the back of the Weathertex board will remain dry at all times.In addition, all wall openings, penetrations, junctions, vertical and horizontal joins, connections, window heads, sills and jambs or other components, must incorporate appropriate NCC complying flashing for waterproofing to prevent moisture exposure on the back of the Weathertex. Flashing materials and methods must comply with the requirements of Weathertex, and where flashing materials are not specified by Weathertex refer to the Australian Standards &/or NCC. Failure to appropriately flash all penetrations will void the Weathertex Manufacturers Warranty. On walls projecting from the roof line in upper storey construction, keep the bottom edge of Weathertex cladding 70mm clear of the lower storey roof claddings. Weatherproof with an approved flashing. For product specific details please refer to the relevant construction details on weathertex.com.au.1.4.7WALL SARKING REQUIREMENTSVapour permeable membrane must be used under all Weathertex external wall systems. The vapour permeable membrane allows for the controlled escape of vapour from within the building whilst restricting the ingress of liquid moisture.Weathertex recommends the use of Vapour permeable membrane in conjunction with the Weathertex Cavity Installation System to provide the best protection against condensation problems such as mould, timber rot, corrosion and loss of thermal resistance. Resources such as the ABCB Condensation Handbook and NATSPEC offer general information on condensation principles. NOTE: Soft compressible products such as insulation installed directly between the front of the wall studs and Weathertex cladding is not compatible with Weathertex products and will void the product warranty.SARKING REQUIREMENTS FOR CLIMATE ZONES 2 - 8Material Standard AS/NZS 4200.1Installation Standard AS 4200.2MANDATORY PROPERTIESVapour Resistance Class 4Water Barrier Passing AS/NZS 4201.4Flammability indexNOT MORE THAN 5*sarking products are unsuitable if classed as a Non-water Barrier as per AS/NZS 4200.1 clause 5.3.5. and will void the Weathertex product warranty.Weathertex 9'