Waterproof basement - "Fresh concrete composite film"

Hello everyone,

this is about the way our house builder lets a waterproof basement be constructed. To be honest, I have never heard of this before and you can find relatively little about it online....and if you do, it is mostly for commercial/office buildings.

The method is called "fresh concrete composite foil" (FBVK #waterproof) with 2-layer exterior walls 20cm.
One level lower would be the "WU basement" with 2-layer exterior walls 24cm, joint sheet metal. Of course also cheaper (around €3,000).

The plan is to set up a study for me in the basement. Therefore, we would like it to be "properly sealed," preferably also without high humidity through WU concrete.

A soil survey is not yet available!

Do you know the first method? Have you had any experience with it or any other opinion about it?
It would also be interesting to know whether insulation is even possible if an "foil" adjoins the soil on the outside.

I have never read that either, but that means nothing. But aren't you building with Schwörerhaus? Isn't the basement from them?

But exactly, we are building with Schwörerhaus and the basement will also be carried out by them.

We are building without a basement, but according to the [B Plan] we have to create a water- and gas-tight floor slab. Our expert advised us to use [Preprufe] fresh concrete sealing. The architect has included it in the planning. Just google [Preprufe].

Thanks for the tip I have so far only ever read something about "Sika Proof". The information on Preprufe seems to be somewhat more abundant.

Hello, I am familiar with the type of sealing Fresh Concrete Bonding Membrane but I have no experience with it yet!

Why such a complex and expensive execution when you don’t even know what kind of load case applies?
For load case groundwater and usage class A, you can perfectly use a [Weisse-Wanne] with additional vapor barrier sealing!

Best regards.