Fire Stop

As of May 2010 The Australian Building Codes Board (ABCB) endorsed the final draft version of the Australian Standards 3959 - Building in Bushfire Prone Areas code, which is now referenced by the Building Code of Australia.

There is now a specified methodology for the determination of building's construction requirements. These determining factors are:

  1. Whether the building is in a designated bushfire prone area.
  2. The bushfire attack level (BAL) of the building based upon the site classification
  3. The selection of the appropriate construction solutions for the determined BAL rating.

The levels are based on radiant heat flux exposure and range from 'Low' to 'Flame Zone' These are now recognized as the six levels of bushfire attack.

Bushfire Attack Level
Bal - Low
Bal - 12.5
Bal - 19
Bal - 29
Bal - 40
Bal – Flame Zone
Description of predicted bushfire attack and level of exposure
There is insufficient risk to warrant specific construction requirements <12.5 kW/m2
Ember attack 12.5 kW/m2
Increasing levels of ember attack and burning debris ignited by windborne embers together with increasing heat flux between 12.5 and 19 kW/m2
Increasing levels of ember attack and burning debris ignited by windborne embers together with increasing heat flux between 19 and 29 kW/m2
Increasing levels of ember attack and burning debris ignited by windborne embers together with increasing heat flux and increased likelihood of flame exposure to 40 kW/2m
Direct exposure to flames from fire front in addition to heat flux and ember attack > 40 kW/m2

Because of Australia's ongoing history of bushfire prevalence many homes will come under periodic threat from serious bushfire danger. Acol Skylights is mindful of this threat and for this reason we have released a range of skylights which comply with the new ABCB code. Firestop skylights are completely non-combustible.

FireStop Skylights are externally finished with a pane of toughened glass rather than our standard Polycarbonate dome. Fire Stop is available on any square or rectangular skylight in our Supa-Lite Range, and because all the materials used in manufacture are completely non-combustible they are ideal for fire risk applications. To eliminate any threat and comply fully with the requirements of the code Acol Skylights seals all gaps in the skylight greater than 3mm to eliminate ember attack. For this reason we do not offer FireStop with the venting option.

FireStop Skylights provide a flame retardant barrier in the event of a fire and are ideal for property boundaries, bushfire prone areas, and even as an architectural feature. FireStop skylights can also be used in conjunction with a plaster shaft to provide the internal look of a fixed roof window while offering the installation ease which comes with a standard skylight.

FireStop glazing is available in a variety of finishes, Single glazed toughened, Double Glazed or even Low"E" Solar Glass. They can also be fabricated to suit any roof type and come complete with full installation instructions.

More information.

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