Remove the ridge capping to easily get rid of roof tiles and clips.
Roof sarking regulations.
A typical roof build up that contains sarking is as follows from the bottom.
Insulation sitting either between and under or between and over the rafters.
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.
Recommended for use in warmer climates.
The limiting u value the maximise u value which cannot be exceeded required under current building regulations for the roof is 0 20w m.
Roof cladding materials must be non combustible.
What is the right roof sarking type to choose.
Unfasten all clips that take hold of the roof tiles.
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.
When rolling horizontally the top layer should overlap the bottom layer by 150mm.
The junction between roof and wall must be sealed.
Recommended for use in colder climates.
Consult a reputable roof sarking supplier within your area to invest in high grade products that will last for years.
Roof tiles or other covering.
Roofs must be fully 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.
The need to install a roof sarking will depend on several criteria bushfire attack level length of the rafter roof pitch and tile profile.
When the product is installed under battens it must be rolled out horizontally.
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.
Gutters and other openings must be fitted with non combustible ember guards.
Roof sarking should be installed under battens with a maximum sag of 40mm to manage thermal performance and be angled at 2ยบ to facilitate drainage.
Identify the roof dimension to know the correct measurement and number of sarking sheets to buy.
If the homeowner s roofing condition falls into any of those criteria they will be obliged to follow the required regulations such as.
Vapour permeable sarking controls the risk of condensation by allowing water vapour to be.
Roof cladding materials must be non combustible.
Sarking boards with a gap of 2 3 mm between each one.
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.
