Bushfire Attack Level

UNDERSTANDING THE BUSHFIRE ATATCK LEVELS IN AUSTRALIA

Bushfire Attack Level (BAL)

In response to devastating bushfires in Victoria in 2009, Australian Standard 3959 was updated and republished AS3959:2009. The Building Code of Australia referenced the new Standard on the 1st May 2010.

The old standard had 4 levels of bushfire attack, the new Standard has 6 levels of severity expressed as Bushfire Attack Levels (BAL):

  • BAL – Low
  • BAL – 12.5
  • BAL – 19
  • BAL – 29
  • BAL – 40
  • BAL – FZ

For more informationĀ click hereĀ to view the PDF Australian Glass & Window Association information sheet on the different construction requirements for windows and doors in each level.

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