Does it make any sense to talk about the foundations and the upper structures as being separately insurable ? Can foundations be reused ?
I assume the foundations are concrete, and the rest is wood, cardboard and any combination of the two, so I could see that the foundation would survive a fire
Get out of here, who is building a home out of cardboard?
Drywall is two sheets of paper/cardboard cladding (increasingly) low density gypsum.
Soundproofing material is also often made of cardboard (though we do have alternatives for that, unlike drywall).
Right, so the house is not constructed out of cardboard. Soundproofing in my part of the US is often rockwool and not cardboard.
Well it contains cardboard and wood, so it's made of cardboard and wood, among other non-flammables. If I say the house I live in is made of stone, brick, cement and rocks, obviously you know it has windows and insulation, and whatnot. It's still made of stone.