The Building Code of Australia requires the construction of building in bushfire prone areas to follow the specific requirements of Australian standard: 3959.
These building requirements for house designs and constructions vary according to the Bushfire Attack Level (BAL) that a development falls into.
Low Rating Bushfire Construction
Australian standards requirements for a low rating bushfire construction:
- Weephole in the brickwork to require a weephole protector that has a stainless steel mesh inserted.
- All windows require 5mm toughened glazing in lieu of 4mm standard glazing.
- Fly and security screens are required to have an aluminium wire rather than a poly wore and the screen needs to cover the fixed window, not just the opening sash. (Effectively twice as many screens)
- Front door needs to have a fireporrf frme and also requires a screen over the door and any side light glazing.
- Garage door needs fire resistant weather strips.
- Roof is required to be fully sarked and roof vents to have fire resistant weather strips.
Medium Rating Bushfire Construction
Australian standard requirements for a medium rating bushfire construction:
- All inclusions required by the low rating bushfire construction plus the following additions.
- Facia and gutters need to be fixed at 450mm centres in lieu of 600mm centres which require noggins to be installed between the truss tails.
High Rating Bushfire Construction
Australian standard requirements for a high rating bushfire construction:
- All inclusions required by the low and medium rating bushfire construction plus the following additions.
- All windows require 6mm toughened glazing in lieu of 4mm standard glazing.
- Roof penetration requires stainless steel mesh inserted to prevent embers from entering.
- Eave sheeting needs to be 6mm in lieu of our standard 4.5mm.