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Bushfire Rating

Australia offers a unique bush lifestyle, however the threat of bushfires is always present and this needs to be considered when purchasing windows and doors

At Windoor we can manufacture your windows and doors from bushfire resistant timbers. Timbers including Merbau, Blackbutt and Spotted Gum to name a few, also we can offer recycled timbers (Australian Hardwoods)

For more information about Timber in Bushfire Prone Areas visit (The Australian Timber Database). The information below is taken from the website.

In many parts of Australia, the construction of new buildings and additions to existing buildings will be assessed as being in a Bushfire Prone Area. The relevant Australian Standard — AS 3959 — provides for a range of Bushfire Attack Levels for proposed construction. Each Level is based on the assessed threat and as the assessed threat increases, so do the restrictions on the building materials that may be used. Where there are restrictions on the building materials, timber is permitted in the lower levels provided the timber species meets certain criteria.

There are 2 main criteria:

  1. For some applications, AS 3959 indicates that there are no requirements or permits the use of timber. For such applications any timber may be used (where appropriate) provided that the timber meets the requirements of all the other standards and codes that apply to the construction.
  2. For some applications, AS 3959 restricts the use of timber to a fire-retardant-treated timber. However, the Standard does provide that some timber species are capable of meeting the required parameters (for resisting fire) without having to be subjected to fire retardant treatment. Again, the timber used must meet the requirements of all the other standards and codes that apply to the construction.

The following timber species have been tested and found to meet the required parameters without having to be subjected to fire retardant treatment:

  • Blackbutt
  • Merbau
  • Red Ironbark
  • River Red Gum
  • Silvertop Ash
  • Spotted Gum
  • Turpentine

The 2010 BCA (Building Code of Australia) and amended AS3959 cover all aspects of the external built environment, including windows and doors. AS3959 outlines different construction practices and building materials for five bushfire hazard levels, known as Bushfire Attack Levels (BALs)

  • BAL 12.5 : Low
  • BAL 19 : Moderate
  • BAL 29 : High
  • BAL 40 : Very High
  • BAL FZ : Flame Zone
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