Cellar Building

[John Silver]

What are the best building materials to line the walls of a cellar? Since clay walls have an insulation factor of 0.95 wouldn’t that be the best? Suggestions please!

[Voronja]

Do not built walls what’s so ever. Just leave the soil as walls and soil around the outside as floor.

EG. 6x10 room. Only tile 4x8 flooring, leaving 1 tile all the way around the outside as bare soil with bare soil walls. As long as you go down 2 flights of stairs and the floor, walls and ceiling are soil and the area is closed off with doors the area should be cool enough to prevent spoilage.

Still need help? Search YouTube for how to build underground cellars.

[kittyalliance]

Originally posted by what are you doing step bro??:

What are the best building materials to line the walls of a cellar? Since clay walls have an insulation factor of 0.95 wouldn’t that be the best? Suggestions please!

The Fundamentals to Cold Room Temperature (with addendum on Stability): https://steamcommunity.com/sharedfiles/filedetails/?id=2506438750

[Philtre]

In case you want the TL;DR version- the game has a very simple temperature model that essentially considers natural soil/rock to be "cold"; the "insulation" that player-built walls and flooring provide is basically treated as always raising the temperature (i.e., "insulation" helps keep you warm but does not keep you cold). So you want as much natural wall as possible, and enough bare floor to keep the temperature low even during heatwaves.

[kittyalliance]

Also realize that the room is influenced by 2 blocks past it's interior footprint... so the wall, and the block beyond the wall. You would not want structures or floors immediately on the other side of the wall either, as it would influence temperature within the room itself (see pictures and discussion in link posted above).

[Jez]

you need about a 1:3 ratio of storage space (with flooring to stop spoilage) to 3 squares of dirt. This should keep the temperature even as each bit of flooring slightly insulates the room. You can use the 3 squares of dirt to store items that don't spoil without on a built floor (bricks, ingots, stone etc)

[kittyalliance]

Originally posted by Jez:

you need about a 1:3 ratio of storage space (with flooring to stop spoilage) to 3 squares of dirt. This should keep the temperature even as each bit of flooring slightly insulates the room. You can use the 3 squares of dirt to store items that don't spoil without on a built floor (bricks, ingots, stone etc)

Is that ratio based on a room with no other structures, including no support beams?

I like the approach of the author of that guide (linked above), where there are 2 adjoining expandable rooms - basically one with flooring for food, and one without flooring. The room width is designed so that no supports are necessary for either room and there are no doors except for one leading in from a hallway. In that design, pretty much the only consideration is flooring since there are no other structures and the ratio is much less than you've suggested.

eta: I had to stop playing due to heat issues, so I cannot experiment for myself atm.