Roof Sarking Regulations

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.

When the product is installed under battens it must be rolled out horizontally. Unfasten all clips that take hold of the roof tiles. Recommended for use in warmer climates. Gutters and other openings must be fitted with non combustible ember guards.

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. 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. Roofs must be fully sarked. The junction between roof and wall must be sealed.

Csr recommends that all tiled roofs with a pitch of less than 20 are sarked and the bca mandates this requirement for rafter lengths greater than 4 5 metres. Remove the ridge capping to easily get rid of roof tiles and clips. The limiting u value the maximise u value which cannot be exceeded required under current building regulations for the roof is 0 20w m. Consult a reputable roof sarking supplier within your area to invest in high grade products that will last for years.

Sarking boards with a gap of 2 3 mm between each one. 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. What is the right roof sarking type to choose. 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.

If some are damaged replace them with new ones after putting the tiles back. A typical roof build up that contains sarking is as follows from the bottom. As a general guide it is considered good building practice to sark all tiled roofs as it helps to address the requirement within the bca to protect the. The junction between roof and wall must be sealed.

Roof cladding materials must be non combustible. When rolling horizontally the top layer should overlap the bottom layer by 150mm. Roof tiles or other covering. 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.

Recommended for use in colder climates. The need to install a roof sarking will depend on several criteria bushfire attack level length of the rafter roof pitch and tile profile. Identify the roof dimension to know the correct measurement and number of sarking sheets to buy.