Is Sarking Required Under Colorbond Roof

Sarking and the building code of australia.

Is sarking required under colorbond roof.

Roof sarking is mandatory in all bal 12 5 to 40 rated areas to meet the bush fire ember attack requirements in accordance with australian standard 3959 where it provides a secondary form of ember protection for the roof space1. This video answer the question what is sarking. Commonly referred to as sarking. A layer of sarking reflective foil laminate or rfl is then put in place.

Vapour permeable sarking controls the risk of condensation by allowing water vapour to be. Roof sarking improves performance and comfort by providing the following benefits. Lighter coloured roofs irrespective of material reflect more heat than darker shades. Sarking is pliable laminated membrane well that s how bradford describes anyway.

What is roof sarking. Sagging of sarking to avoid the sarking contacting the underside of the roof sheet but not more than 40mm is recommended to avoid temperature transfer from the roof sheet. Helps protect your home from unseen mould growth or even worse ceiling staining or permanent damage which can result from the entry of storm driven rain into the roof cavity. Colorbond steel and zincalume steel are thermally efficient roofing materials radiating less heat into your home as they cool down faster at night.

You can prevent condensation dripping off the underside of metal roofing onto the ceiling by installing sarking under the metal roof or closing the vents at night to prevent night air from entering the roof space. While this isn t strictly compulsory in all cases sarking s generally considered to be very important for metal roofs to help prevent condensation. The laminate must be allowed to drape between the roof supports.