Clay will release and absorb moisture, from both air and surrounding soil. Great for traditional ovens, not great for a room with books, electronics...
Drywall: same problems.
Concrete less so but still permeable. Can be sealed on the surface but risk of water pressure pushing it off after rains.
Metal will corrode.
Not fond of fibre-reinforced plastic, but maybe best option.,,?
You could fire the whole interior... 😅
Y'know, best idea yet!
I have good ideas at times.
You do.
I could also wimp out and tile everything. Less dramatic failure modes, but nowhere near as fun...
Tile is hard to come by if you're building with materials you find on the land. Fired mud brick comes to mind.
Mud brick will still be porous unless first hard-fired then glazed. Finding adequate clay isn't THAT hard around here, but firing at a high enough temperature is.
Hmmm. Gets really hard if you depend on locally made materials.
Firing them isn't too hard. Glazing might be more difficult, but, not impossible.
Yes, but, every place holds the solution to the issues, it seems.
Traditional Finnish sauna style
I don't know enough about those.
they used to build a small log house without windows, and would light a fire in the center of the room. keep it going for a while, then add stones, let it smoke and burn all day. then let it burn out, and sit in there smacking themselves with oak branches. quite a party.
Women would give birth in there, because they believed the smoke and steam drove out the evil spirits. which is another way of saying the heat, smoke, and steam completely sterilized the room.
