Probably a lot better than what happens to modern concrete buildings which are then wrapped in plastic: https://en.wikipedia.org/wiki/Grenfell_Tower_fire https

Probably a lot better than what happens to modern concrete buildings which are then wrapped in plastic: https://en.wikipedia.org/wiki/Grenfell_Tower_fire https://en.wikipedia.org/wiki/Grenfell_Tower_fire Timber doesn't burn as fast as that, especially in a city as wet as London.