Should i live in an area of prolific open bush fires! I would trial a 3/4 bore galvanised pipe along my roof ridge with regularly spaced spray heads with water, from my large hole in the ground i would name a ‘swimming pool’ in a ceremony of canned beers and crisps and a small fossil fuel water pump to drench or baptise my building when it is raining flaming embers from the sky! No reliance on the water hydrant! Nor an electric pump, as its cable is first to get the chop! I’ve often supplied burning coals to the permanent way gangs with my long handled shovel, But the fires that ensue are well tended.