At least take the furniture out and then carefully lift the floor, it's floating installed if I understood correctly, right?
Exactly, it is floating installed. We have already moved all the furniture except the bed. Lifting it will be difficult because it was installed before the doors were put in. We will probably have to take it apart a bit and check.
I would try to slightly lift the floor somewhere on the wall in a corner and then try to get underneath with, for example, a tissue. The goal is just to somehow find out if it is wet under the foil at all.
I would try to slightly lift the floor somewhere on the wall in a corner and then try to get underneath with, for example, a tissue. It's just about finding out somehow whether it is wet under the foil at all.
or also click out 2-3 parquet boards at one spot.
We did that. It is not noticeably wet or damp... I am attaching some pictures.