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Metal roof sarking.
Roof sarking a house roof is a fairly complicated structure made up of joist battens trusses and the roof cover such as corrugated sheet metal.
Csr recommends that all tiled roofs with a pitch of less than 20 are sarked and the bca mandates this requirement for rafter lengths greater than 4 5 metres.
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The importance of sarking.
Sarking under residential metal roofs is popular because of the many benefits it delivers for little additional cost whether it s as reflective thermal insulation a protective second skin against burning embers in a bushfire area or as a way to control condensation csr bradford has a product solution to suit your application.
Environmental the risk of condensation formation under metal roofs increases in colder climates refer to the climate map on the bradford website where the temperature of the metal roof sheet purlins rafters and battens can fall below dew point particularly metal battens.
It is usually installed directly underneath your roof and acts as an additional barrier for heat and moisture.
It s the layer that sits between your roof itself and the ceiling.
Aside from the structural components it is fitted with insulation and roof sarking.
What is roof sarking.
It is mandatory under the building code of australia bca that all tiled residential roofs regardless of roof pitch with a rafter length greater than 6 metres must be sarked.
Combined with a protective waterproof cover sarking ensures that your property is kept dry while your roof installer executes your metal roofing installation.
Roof sarking sarking is a pliable membrane that sits under your roof tiles like a protective second skin.
Sarking protects your home during roof installation during metal roof insulation sarking is installed first providing some protection against the rain during the installation process.
Sarking under metal roofs can improve thermal performance in warmer climates.
In these regions the use of vapour permeable sarking or anticon.
What is roof sarking.