Roof Sarking Regulations

What is the right roof sarking type to choose.

Roof sarking regulations.

The junction between roof and wall must be sealed. 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. Enviroseal proctorwrap roof sarking is vapour permeable allowing water vapour to pass through it whilst preventing the entry of liquid water and dust from outside. Roof sarking should be installed under battens with a maximum sag of 40mm to manage thermal performance and be angled at 2º to facilitate drainage.

Roof cladding materials must be non combustible. When the product is installed under battens it must be rolled out horizontally. When rolling horizontally the top layer should overlap the bottom layer by 150mm. Recommended for use in colder climates.

Unfasten all clips that take hold of the roof tiles. The need to install a roof sarking will depend on several criteria bushfire attack level length of the rafter roof pitch and tile profile. The limiting u value the maximise u value which cannot be exceeded required under current building regulations for the roof is 0 20w m. The junction between roof and wall must be sealed.

Identify the roof dimension to know the correct measurement and number of sarking sheets to buy. Vapour permeable sarking controls the risk of condensation by allowing water vapour to be. Roof cladding materials must be non combustible. Consult a reputable roof sarking supplier within your area to invest in high grade products that will last for years.

Gutters and other openings must be fitted with non combustible ember guards. Remove the ridge capping to easily get rid of roof tiles and clips. If the homeowner s roofing condition falls into any of those criteria they will be obliged to follow the required regulations such as. Roof tiles or other covering.

Sarking boards with a gap of 2 3 mm between each one. If some are damaged replace them with new ones after putting the tiles back. Recommended for use in warmer climates. 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.

Roofs must be fully sarked. Insulation sitting either between and under or between and over the rafters. Building regulations for insulating a roof heat rises and therefore the building regulations requirements for heat loss through roofs are more stringent than those for walls.