We are going to build a temporary interior wall in our basement. If the room division works well, the wall will likely remain for many years. For that reason, I am eager to do it right so that we don't encounter moisture and mold issues.

The basement is heated, and there is a ventilated parquet floor. My idea is to place the wall on top of the parquet floor; from a moisture standpoint, I find it hard to imagine there would be any problems. What I am most concerned about is how to connect to the outer wall. The outer wall is plastered leca. The outer wall is dry, as the house has been modernly redeveloped, but we have had issues with moisture penetration in some places. Therefore, I believe it's still sensible to make the connection properly. My idea is to otherwise build the interior wall with wooden studs in the usual way.

I am grateful for any tips!
 
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As you say, there's likely no problem with using a regular wall with wooden studs and drywall. You might want to have a 10mm plastic spacer between the outer wall and the first stud so it doesn't "wick" moisture, and keeping the drywall 5-10mm away probably won't hurt either so you can apply a flexible sealant there.

An alternative is to use metal studs and fermacell boards to minimize organic material that might start to smell if it gets damp. However, as mentioned, you may not have this issue, but it might still be worth considering this solution.

Fermacell boards have better properties than drywall when it comes to sound, fire, and fastenings. So, if you plan to use drywall/plywood in the wall, generally one layer of fermacell is sufficient.
 
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