Tile planning single-family house - slip resistance/strength/quality

Good day everyone,

Yesterday we had our "pre-sampling" for our tiles in our single-family house.

We are planning tiles in 120x30cm - wood look in our living-dining-kitchen area
--> Model: Craco - unglazed porcelain stoneware - slip resistance R10/A - thickness 10mm

Hallway ground floor/lower floor + guest WC tiles with 60x30cm
--> Model: Emarese - unglazed porcelain stoneware - slip resistance R9 - thickness 9.5mm

Bathroom upper floor tiles with 90x45cm
--> Model: Conco - unglazed porcelain stoneware - slip resistance R10 - thickness 9.5mm

Now I have the following questions regarding this:

Regarding the living-kitchen-dining area: Do I have any disadvantages with increased slip resistance such as R10A (which is currently planned for us)? As far as I know, this is usually only necessary in the bathroom. Of course, the tile is slightly rougher, which personally doesn’t bother me, quite the opposite.

Regarding hallway ground floor/lower floor + guest WC: Is R9 sufficient here?

Bathroom upper floor: Here we only have R10 - shouldn’t R10/A or R10/B be planned here? What does R10 mean in general if there is no A or B behind it? Should one be careful here or should one opt for a different tile?

--> How important is the thickness of the tiles in general?

--> Unglazed porcelain stoneware fits, I think, right?

Hello questioner.
The assessment of slip resistance in barefoot areas exposed to moisture is carried out, for example, as R10 A.
In all non-moisture-exposed areas, the "normal designation" R9 to R13 applies.
For all residential areas, the rating group R9 is sufficient.
The fact that the term actually has nothing "to do" in residential areas, as it is incorrectly applied here, will not be further commented on here. Unfortunately, it is communicated this way everywhere.
Yes, R9 is enough for your object here and R10 in the bathroom (as long as it does not concern the floor of a shower with a slope) is also acceptable.
The thickness of a ceramic tile becomes relevant when we are in the commercial sector. Here, higher traffic loads, possibly a certain impact resistance, and the possibility of driving with forklifts or pedestrian-operated industrial trucks come into play.
This does not apply to residential areas, so with about 10mm material thickness we can actually absorb all the usual loads in residential construction without damage, even with slight hollow areas.
Unglazed porcelain stoneware obviously requires a separate surface protection in the form of impregnation or a film-forming measure.
Good luck: KlaRa

Thank you very much for your response!

Is R10 therefore sufficient for the bathroom without the "A", or is R10A absolutely necessary?

With R10A for the living area, I therefore have no "disadvantages", correct?

Does it make sense to use glazed porcelain stoneware tiles instead of unglazed ones, for example in the bathroom? I had read that this is easier to maintain.

Hello questioner,
Here are the answers to your questions:
"Is R10 without the "A" for the bathroom sufficient, or is R10A absolutely necessary?"
Answer:
No, the addition of A is not absolutely necessary for the living area, but in the bathroom, especially in and in front of the shower tray, it is advisable.
That means: In the bathroom, the slip resistance of the tiles or porcelain stoneware for the barefoot area should be tested.
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"With R10A for the living area, I thus have no 'disadvantages,' correct?"
Answer:
Yes, that is correct.
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"Does it make sense to use glazed porcelain stoneware tiles instead of unglazed ones, for example in the bathroom? I had read that they are easier to maintain."
Answer:
The type of soiling in more intimate bathrooms is understandably different compared to that in the hallway entrance.
However, in both surface areas, over time, dirt deposits on both glazed and unglazed porcelain stoneware are unavoidable, as they settle in the (microscopic) surface depressions.
In this respect, from my point of view, there is neither an advantage nor a disadvantage for either surface.
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Good luck going forward: KlaRa

With R10A for the living area, I therefore have no "disadvantages," correct?

Socks and tights might wear out faster. :)

No joke, depending on the tile, that's actually the case.

Socks and tights might wear out faster. :)

No joke, depending on the tile, that’s actually true.

Yep, that’s how it is for us. Doesn’t matter. With underfloor heating you can walk barefoot.

However, I would tile hallways and living areas uniformly. It looks more spacious.
The gray tile seems deceptively sensitive to me. You’ll see every grain of sand on it.