Floor in concrete optic / Screed floor

It is probably also a question of your expectations for something like this and whether you are willing to forgive small flaws in the result. Against this background, I have often had things done by people whose work quality I know well, and we then "took the risk" together.

Yes, that is the question whether we take the risk. I am willing to forgive flaws if it still looks good overall. It's the same with laying flooring. If someone lays parquet as a favor, I have to be able to forgive flaws. After all, I saved a lot overall.

Exactly......possibly no risk - no fun!

... but your remarks about wives and domestic peace come across as condescending and are chauvinistic (actually even sexist). .

Thanks for the note! I will obviously avoid that in the future. Regards: KlaRa

Visually, I also found the seamless coatings really cool, but especially in the bathroom, you should be aware that a waterproofing layer (on top) is necessary (with almost all manufacturers), typically a PU sealing. That was the reason for me to distance myself from it. Concrete look with a plastic feel was not my thing. (By the way, it’s really annoying if something breaks on it) If you decide to do it: have example surfaces of your craft shown to you. The trowel pattern can become very distinctive! We looked at various ones, from "expressive" to almost completely uniform everything was there, so you should find the craftsman that suits you.

Dear forum,
I am following this topic with interest. I am new to this forum and hope to post my questions in the correct thread (if not, I would be grateful for hints as to where it might be better placed).
For us, the planning of the floor coverings is currently becoming very relevant.
In the entire upper floor (except bathroom) we want to have installed: Wineo 1500 Purline Biofloor Wood XL, decor Crafted Oak, glued installation, with joint, size 1500 x 250 mm, product thickness 2.5 mm, usage class 23/34/43.

On the ground floor (hallway, living room, kitchen, guest room) we would like to have a (seamless) floor in concrete look. There are various terms or systems for this (self-leveling screed, exposed screed, epoxy resin floor, ...).

Our construction company is installing CT-C25-F4 screed onto our underfloor heating.

On this screed we then want to apply a concrete-look floor.

Currently we have considered:
(1) Pandomo Floor (K3 surface screed) from Ardex

Does anyone have experience with this provider/system?

Visually, we like it very much because of the homogeneity / calmer design. However, we have concerns about the strength / hardness of the screed compound (Should not be much harder than good parquet, susceptible to scratches / signs of wear over time).

What is your experience regarding the load capacity of screed floor (especially Pandomo)?

(2) Industrial flooring CT-C60 made from mineral semi-dry mortar RHEOBOND 007; surface troweled smooth, Floorfinish 430, application OBTEGO R400

Does anyone have experience with this system?

(3) Screed floor or epoxy resin floor from TopCiment

Does anyone happen to have experience with this?

We would like a concrete-look floor that does not look too wild / busy and that is also reasonably durable.

I am already grateful for your valuable advice, tips and remarks.
Best regards and wishing you a good start to the new year

Hello questioner.
Here are the answers to your questions:
If you want an optically homogeneous surface in so-called "concrete look," you will not be really happy with any of your suggestions!
And this for understandable reasons.
The Pandomo system, as well as the "TopCiment" consisting of a cement dispersion, are mineral-bound systems that ultimately have different absorbency after curing. Pandomo is usually treated with a so-called stone oil, which inevitably (due to the different absorbency of the cement surface) causes different penetration depths.
This means that optically cloud-like, differently visible areas arise, which have nothing to do with "optical uniformity," but are unavoidable from a craft perspective.
The Rheobond from Chemotechnik Abstatt is known to me from various large projects, most recently in Berlin.
Rheobond is a classic industrial coating, as used for hall floors but also in commercial buildings. A condition for an optically appealing surface is machine smoothing and thereby uniform structural consolidation. This cannot be accomplished in small rooms (residential objects); manual work is necessary due to protruding room corners, etc. Such surfaces treated with an impregnation (here: OBTEGO) create strong cloud-like shadows with varying intense effects (see photo on the right).
A rotary sander had to be used on the left of the picture to smooth the surface before applying impregnation. You can also see this.
For an industrial coating these features would be completely irrelevant, in large projects it leads to disputes but ultimately must be accepted; in private rooms, you cannot accept such a final appearance.



The tendency to scratch cannot be excluded with Pandomo as well as with TopCiment.
If you want an optically flawless, i.e., homogeneous appearance, you will not avoid a pigmented sealing, for example in RAL 7046.
There are abrasion-resistant material systems available that do not yellow and still serve their purpose for many years.
You must always be aware that such floor systems, as you have listed, are so-called "unique floors." How they look afterwards depends on several aspects.
DIN-A4 sized sample areas do not help either (see photo 1), they are also unsuitable as legally secure evidence in case of a dispute to demonstrate optical inequalities.
We are not even talking about suitability for underfloor heating or compressive strength of the systems, as all systems fulfill the necessary requirements.
The decision is now yours. As my last remark on this: the term "concrete look" is meaningless. A concrete look as known to me from professional practice and also usual, you certainly do not want to find in the residential area.
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Regards: KlaRa