Doing some more reading this morning about the mechanisms by which homes burn in the large wildfires we're seeing in the west. Turns out it's not direct impingement of sheets of flame, but rather wind blown embers that lodge in nooks and crannies. Those same nooks and crannies that tend to trap pine needles, leaves, dust, and other flammable material, and cracks or vents that lead into attics and vents. Some can be easily plugged, but especially in older homes, it's not easy.
This article tells of how one man designed a home built sprinkler system he mounted under the eves that he credits for saving his house. Let's see, a one gallon spray head every eight feet, 40x70 house, that's 1650 GPH or almost 40,000 gallons per 24 hour period. So the draw back to that approach is you have to flip the pumps on as the flames approach, and there's a very good chance the fire may have already blocked your route out. So you're betting everything, the house and your life, that the system will work. That or you've a very high confidence that you have some sort of fire shelter that will withstand the storm of embers.
If you do evacuate, in my experience you may have to leave well before the fire actually arrives. So that means you need a way of remotely triggering the pumps, and a way of deciding when to do it. That implies TV cameras monitoring the compass points for fire, and a satellite internet connection powered by a huge battery bank or a generator. I read of a similar approach a gal took for the big fire in Big Sur a few years ago, except she had big tanks of fire retardant that sprayed the house and the surrounding grounds. She watched over the internet as the flames approached, and pushed a button on her cell phone to set things in motion. I contacted the company that built the system last year for a quote, and never got a response after the initial conversation. Maybe they thought my place was a lost cause? That, or all my junk visible in the satellite imagery led them to think I couldn't afford it.:shocked::laughing:
Anyway, thought provoking reading...