What is Roof Sarking and Why Do You Need to Know it?

During house construction, one might often hear tradies mention the word ‘sarking’. Especially when installing the roof or walls. But what is sarking all about?

What is sarking?

Sarking is a pliable membrane that improves the thermal performance of the house, making it more comfortable and energy efficient. Aside from providing thermal insulation, it also serves as a protective layer against draught, dust, heat, fire embers (caused by bushfire) and rain.

Sarking is installed either under the main roof material or between the wall cladding and wrap materials. The purpose of the two is closely similar. The only distinctive difference between the two is the required regulations to follow under building Code of Australia.

When installing wall wraps (sarking), the tradies are only required to follow the requirements for bushfire prone areas. Unlike with roof sarking,  it needs to follow several regulations in the building code of Australia.

What are the roof sarking regulations?

The need to install a roof sarking will depend on several criteria – bushfire attack level, length of the rafter, roof pitch, and tile profile. If the homeowner’s roofing condition falls into any of those criteria, they will be obliged to  follow the required regulations, such as:

roof sarking regulations

What is the right roof sarking type to choose?

After learning what is roof sarking required regulations to follow, the next thing to do is choose the right type that will best fit their location’s climate. Here, in Australia, there are parts that have a tropical influence – hot and humid during summer and somewhat warm and dry during the winter.

For these types of climate, the recommended is a non-permeable type of roof sarking. This can maintain the home comfortable even experiencing extreme heat or cold.

But there are also parts (southern) that have cooler and mild summers, and sometimes rainy winters type of climate. For this climate condition, the best type to choose is a vapour permeable type. This is a good type of roof sarking that reduces the risk of mould growth and structural decay.

Another factor to consider is what is roof sarking type to choose according to roof shape (e.g. elevated, pitch, etc.). Just like with the climate, there are different criteria to consider on this stage. To guarantee an accurate answer, it’s best to consult a trusted tradie.

With today’s climate change, it’s only wise to prepare the home with materials that can maintain its comfortable setting. Sarking just happens to be one of the best materials that everyone can avail nowadays.

Learning what sarking is all about, or even just what roof sarking is can help everyone to have a stress-free wall or roof replacement. And to guarantee success on the replacement/installation, hire a trusted professional to install it.

Featured Photo Courtesy of Antranias via Pixabay

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