Bush fire retardant our top priority

Bushfire proofing (well a retardant house anyway). Our location does not gives us the opportunity to flee, too much bush and a winding road through the bush to get out. First the roof, magnesium oxide sheeting under the colourbond roof, no heat transfer. It is incorporated into the eaves and fascia as well. The product we chose was too brittle and hard to use, but had specs for bushfires. The walls, easy as strawbale walls are cobbed so the render is sufficient to deter fire. Shutters on windows and fire retardant (hardwood door). A store room with all of the above surrounding it with air tanks is where we will see out the passing inferno.