So the outcome of our Bushfire report we needed for CDC is as we expected and we remain at a rating of BAL12.5 due to being within 100 metres of the bush at Cattai Creek reserve.
Wisdom have raised a variation for the items we require in order to be compliant with the Australian Standard AS 3959-2009 ‘Construction of buildings in bushfire prone land’ and other developmental standards.
They are also raising an additional variation with items that we would like but that are not compulsory ie. Security screen doors and gutter guards.
The Australian Window Association has also produced a helpful guide to windows and doors in a bushfire prone area:
So in addition to what our builder includes as standard our BAL12.5 requirements are:
- Weepa Vents & stainless steel spark arrestors to vents & weepholes $865
- Fire-retardant Merbau door frames to Entry & balcony doors $795
- Seals to garage door top and sides to prevent entry to embers $520
- Spark guards to whirlybirds on roof $90
- Non-combustible sealant and/or sarking to Colourbond roof joints $870
Giving a BAL12.5 compliant measures total of $3140
Additionally we have:
- upgraded to a Merbau external Front Entry hinged door in lieu of standard $580
- upgraded to a Merbau external Balcony hinged door in lieu of standard $310
- Aluminium flyscreens with aluminium flymesh to all openable windows (21) $1050
- Diamond grill sliding flydoors with .316 Stainless steel flymesh & triple lock to Home Theatre and Laundry $1090
- Diamond grill stacking flydoors with .316 Stainless steel flymesh & triple lock to Dining & Leisure $2000
This gives us a grand total of $8170 against our provisional allowance of $7K.
We have not gone for gutter guards ($5K) at present as in the meantime our site costs have increased due to the need for a drop edged beam but that’s a story for another time.
A solid dense termite resistant hardwood from SE Asia and Queensland Australia.
I have checked with Wisdom about where they source their supplies from with respect to concerns over illegal logging in SE Asia. Wisdom’s Merbau is sourced overseas and has the relevant certification ( Certisource and SVLK).
The Indonesian Government has agreed to improve its forest management certification system – the Timber Legality Assurance System (SVLK). You can read more about it by following this WWF link:
I have also asked if Wisdom use any of the other bushfire resisting timbers:
Red River Gum