Floor in concrete optic / Screed floor

Which screed do you need?

We were recommended the Thermorapid by Chemotechnik.

The Thermorapid is a rapid-setting cement, extremely low in shrinkage, certainly the "Mercedes among cementitious binders."
The [KANN] can, but does not have to be included as a requirement. Well, it was not written that way either.
For a screed floor, a normal standard cement screed CT-C25-F4 is basically sufficient.
The price, also one of the previous questions, is partly due to the product itself, but also due to the installation.
No, not everyone with "two left hands" will manage to produce such a screed or unique floor in a way that the peace at home with their beloved will not be disturbed for the next decades.
The difficulties during installation are manifold. And anyone who does not possess spiked shoes and a spike roller to immediately vent the fresh self-leveling mortar should quickly give up on installation as a do-it-yourself procedure.
Screed floor used to mean it was manually trowelled. Today, self-leveling flowing compounds are used to avoid the otherwise unavoidable trowel marks when trowelling on.
This also means pre-filling the blowholes in the ground screed surface with a filled primer or by scratch trowelling, which in turn must be ground.
All of this requires a high level of expertise. And exactly that must – together with the warranty already mentioned elsewhere – be paid for.

Thank you for the very informative post. Is the filling no longer done by hand at all? It looks like that in some internet pictures, as you can see the trowel marks. So is it rather standard that you don’t see them?

There are countless options for a stylish floor. Therefore, I would not advise you to choose something so tricky; unless, for specific reasons, you have always wanted exactly that kind of floor.

At first, I also thought I wanted a floor without joints. Until I realized the following:
- Expansion joints must be planned
- Installation is complicated, so expensive and you have to find skilled personnel
- The floor is more sensitive than expected, e.g., water should be removed
- Cleaning with a steam cleaner is not possible
- Discoloration and scratches are possible

I also greatly appreciate ’s expertise and detailed answers. One thing, however, has been getting on my nerves for some time. You are probably not even aware of it and don’t notice how it comes across; maybe it really stems from your experience, but your remarks about wives and household peace come across as condescending and chauvinistic (actually even sexist). There are also men who have an increased desire for flawless and aesthetically pleasing craftsmanship, and just as there are DIY men, there are also DIY women. Once, I would have said nothing about it, but as often as you bring up that phrase, I couldn’t bring myself to leave it uncommented this time. So please don’t take it badly, but just understand it as a hint and maybe reflect on it. On topic: We were also interested in BetonCire for the bathroom. Unfortunately, it is almost impossible to find a professional here who does that. Even a craftsman recommended by BetonCire didn’t even have time for a preliminary discussion. It didn’t even come to a cost estimate. Now we will just have the tiles (done).