Is Sarking Required Under Colorbond Roof

A layer of sarking reflective foil laminate or rfl is then put in place.

Is sarking required under colorbond roof.

Ventilated roof spaces in high humid climates like queensland that are under metal roofs can result in excessive condensation within the roof space at night. 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. Sarking and the building code of australia.

While this isn t strictly compulsory in all cases sarking s generally considered to be very important for metal roofs to help prevent condensation. Roof sarking is a membrane that is fitted during tile or metal roof construction. 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. Sagging of the sarking to facilitate drainage to the gutter is required but not more than 40mm.

In many installations both are installed. In bushfire prone areas flying embers cannot enter this space through the roof due to sarking protection. The flexible membrane is usually installed under the battens to provide thermal insulation and to prevent water and dust penetration in the roof space. 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.

Sarking is not mandatory however it helps to protect your roof frames from acquiring moulds stains and other decaying issues. 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. The other type is called underlayments aka sarking.