tear it down and start over,

you cannot afford the building materials that would be necessary to keep you house from burning in a forest fire the likes of which we have seen lately.

there isn't a paint or siding or any other coating that will save your home, there are photos of the all steel building that melted in these fires.

proper mitigation and good insurance is a better place to spend your money,

even if you home survives the fire it may have to be torn down anyway due to smoke damage

if it were as simple as coating the homes in something then everyone would do it.