Bal FZ through to Bal 12.5 ratings explained

   Bal (bushfire attack level)  ratings for property

.   All sites or properties has one of six possible BAL ratings:

• BAL Low:There is insufficient risk to warrant specific construction requirements

• BAL 12.5:Ember attack. (BAL 12.5 Construction Requirements)

• BAL 19:Increasing levels of ember attack and burning debris ignited by windborne embers, together with increasing heat flux. (BAL 19 Construction Requirements)

• BAL 29:Increasing levels of ember attack and burning debris ignited by windborne embers, together with increasing heat flux. (BAL 29 Construction Requirements)

• BAL 40:Increasing levels of ember attack and burning debris ignited by windborne embers, together with increasing heat flux and with the increased likelihood of exposure to flames. (BAL 40 Construction Requirements)

• BAL FZ:Direct exposure to flames from fire, in addition to heat flux and ember attack. (BAL FZ Construction Requirements)

Where your building is greater than 100m from any classified vegetation the BAL rating will more than likely be BAL–LOW and will not require any special construction requirements.  Where there is a risk or potential that ember attack could affect your property, it recommended that BAL – 12.5 is applied.

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