Cavedale Rhônes's Post

@ai6yr I’m going to go with radiant heat. Before we learned about the 0-5 foot area around houses that collect embers, the gold standard was 30 feet (10 meters) of clearance from the house to large groups of shrubs. You can find videos of the tests online that show that a wood sided building can resist significant radiant heat from 30 feet.

The houses in the center look like they are closer than 30 feet, plus they probably have shrubs and wooden fences separating them for privacy. So if one goes up due to embers, the surrounding ones would be well within the 30 foot zone and could ignite from the radiant heat.