What is sarking board used for?
Sarking boards are softwood boards that are designed to fit onto roof rafters, providing extra strength to the building structure. Although sarking boards are not a requirement on all buildings, they are commonly used in areas of high rainfall or in environments where torrential rain and high winds are commonplace.
What is sarking made of?
In modern usage of the term in Australia, sarking refers to a laminated aluminium foil layer, or reflective foil laminate (RFL), that is installed on the roof trusses, beneath the battens, supporting a tile or metal deck roof.
Are sarking boards waterproof?
Permeable sarking board PAVATEX sarking boards can be exposed to the weather for three months, and are “waterproof” according to the European standard EN 14964 for sarking boards. ISOLAIR sarking boards are simultaneously also insulation boards, and can therefore be included in the calculation of the heat transfer.
What is roofing sarking?
Sarking is a pliable membrane that sits under your roof tiles, like a protective second skin. It helps insulation work more efficiently, and protects the things you value from storm driven rain and dust, condensation and bush fire ember attack.
What does sarking mean?
Definition of sarking 1 chiefly Scottish : thin boards for sheathing (as under shingles or slates) 2 Scottish : linen shirting.
Is sarking an insulation?
Sarking is classified as a type of insulation and will help increase the total R-Value of your home when installed properly. R-Value refers to how well the insulation resists the flow of heat.
What is a sarking membrane?
The term ‘sarking’ can also refer to a pliable membrane such as a layer of felt, polystyrene or reflective foil, that insulates or reflects heat and can provide extra weather resistance. It can act as a protective second skin for the roof by helping to prevent storm-driven rain penetrating into the roof cavity.
Does sarking go under roof battens?
It is considered good building practice to install roof sarking parallel to the eaves (horizontal roll-out) and affix under the battens to allow water to cascade down the lap joints and provide a drying passage between the sarking and roof sheet.