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a) Mesh The Australian Standard AS/NZS 4200.1-1994 recommends that the "sarking membrane should be supported by wire mesh or be otherwise adequately reinforced". on a roof construction where the distance from one rafter centre to the next is between 600 mm and 900 mm. If the distance between rafter centres exceeds 900 mm, this recommendation becomes a requirement of the Standard. b) Anti-ponding Board On a roof construction with a pitch below 19° 48´, the use of anti-ponding boards is
recommended. The boards are installed to support sarking and ensure that any water collected
by the sarking is correctly discharged into the eaves gutters.
The builder will be required to install this anti-ponding protection which usually consists of
fibre cement sheeting or similar materials.
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