Waterproof basement - "Fresh concrete composite film"

Hm, thanks for the hint.

Our original thought was that the home office in the basement should really not experience any moisture from the outside.
Also with regard to wall coverings, floor coverings, and the like, we wanted to keep it as dry as possible.

In a WU basement, the humidity level is not higher than in other types of construction - provided that the construction moisture is outside.

Well, moisture diffusing through is still an issue with a waterproof concrete basement. We want to avoid that.

The additional cost from a "normal" waterproof basement to sealing with FBVB would be €3000. It would be worth it to us.

It is not. Seems to me to be an internet legend.

The statement unfortunately seems poorly founded... sorry to say it like that. But then the next user here in the forum can come along, claim the exact opposite, and it cancels out. For example, me: It is. A few references are always nice in such cases (no links, as they are prohibited) - Building physics studies from TU-Berlin - Information sheets from the Informationszentrum Beton GmbH in Erkrath - Publications of the German Committee for Reinforced Concrete are just three of many sources that confirm this. What one makes of it must be decided individually. We decide to play it safe. Also with regard to possible cracks later on. We want to enjoy the basement as long and as carefree as possible.

Hello Wissi,

so you are getting a WW with the additional membrane waterproofing? and that is supposed to cost 3000 euros more?

Then I would do it!