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According to the National Construction Code, building materials used as internal linings need to comply with set fire hazard properties.
Fletcher Insulation’s Sisalation® Vapawrap™ range of vapour permeable construction fabrics represent the latest in moisture control, vapour permeable watertight membranes. These products are constructed to reduce the risk of condensation developing on surfaces within the building envelope where they are unwanted. At the same time as allowing moisture to pass outward from the inside of the building, these modern membranes prevent the entry of dust and water from the outside environment both during and after construction. In contrast to traditional foil faced sarking products, the high ...
Since May 2019, the revised test standard for NCC 2019, C1.10, regarding the fire rating of internal linings or materials, has been confusing architects, builders and contractors as to how they should determine if a timber lining product is Fire Group 1, 2, 3 or 4, or even non-combustible. There are two main reasons for this confusion. Firstly, timber has traditionally been regarded as a ‘safe’ product, which requires minimal certification to comply. However, the NCC 2019 does not give natural timber, timber batten or panel products any special status or easier route to compliance, even t...