A properly designed Earth Sheltered House is the most bushfire resistant houses available today . . . . because the walls are protected by earth mounds and the roof with half a metre of sand and soil.
Because they don't have a conventional roof space, they eliminate any possibility of embers, sparks or flame entering the interior through the roof, which is the main source of ember ingress in traditional houses.
If the windows and external doors are protected with shutters and screens appropriate to the Bushfire Attack Level (BAL), and if the house and surroundings are properly prepared for a fire event, then the chances of fire entering the house are virtually nil
ShelterSpace home owners are encouraged to have a Fire Plan just like anyone else, but the maintenance of such things as gutters, eaves, ridges, valleys, gables, flashings and barge caps etc is simply not required . . . our houses don't have them . . . so you can spend more time on the other aspects of your 'evacuation or stay' fire plan . . . and we all know that time is of the essence in a bushfire.
We have designed several Earth Sheltered Houses in Flame Zone areas and many in BAL40 . . . . and all our houses include an air-lock entry, double glazing and roller shutters.
ShelterSpace earth sheltered house design at Biggs Flat - South Australia