Tiling in a level-floor shower

Once again, very slowly. I don’t understand anything about "Gefälle" at first.

What slope did YOU work into the screed? Anything other than a sloped screed is nonsense. The slope in the screed is then automatically transferred to the tiles, possibly with diagonal cuts or similar, when you reach the [Rinne].

Once again, very slowly. I initially don't understand anything about the "slope". What slope did YOU incorporate into the screed? Anything other than a sloped screed is actually nonsense. The slope in the screed is then automatically carried over to the tiles, possibly with diagonal cuts or similar when you reach the drain.

Since my drain is practically slanted, I leveled it and pulled the screed from left to back where I stand and from right to back. I also created a slope from the left towards the drain. That should fit more or less, even if not exactly. Now my question is how I have to lay the tiles so that the water doesn’t run to the edge. The long left side will later be fitted with a shower wall. I think if I had a picture with markings, it would be easier for me to lay them.

So, I think you are making it too simple for yourself with the slope in your imagination and also that your screed was already executed incorrectly because of that. From my understanding, you need two “bends” in the screed, which are then used as guides where the tiles are laid. But then you have to create slopes in two directions. In the end, with the large tiles, you only get a terrible mosaic of many small triangles.

So, I think you are imagining the slope too simply and also that your screed has already been wrongly executed because of it. As I understand it, you need two "bends" in the screed, which are then used as guides where the tiles are laid. Then you have to lay the slopes in two directions. In the end, with the large tiles, you only get a terrible mosaic of many small triangles.
[ATTACH alt="fliesen-legen-in-bodengleicher-dusche-660215-1.jpeg"]85279[/ATTACH]

We wanted the big tiles like that, it’s simply more beautiful.
Is there anything that can be done now or does everything have to be taken out again?

We wanted the large tiles like that, it just looks nicer

Sorry, this is not a decision and not an "I like it, I don't like it"... it doesn't work THAT way. You basically have to build a funnel towards the drain in the shower, with the complication of edges running straight from above and a floor you can stand on. And I don't see a complete 60 cm tile there, only small diamonds and freeform pieces... the surface is too small... this is going to look terrible because you'll only be cutting. And from your posts, I think the screed was installed incorrectly too. I probably won't be overstepping if I say you won't manage to do this satisfactorily. This is already a challenge if you have symmetry, but nothing fits for you. You can try to recreate it with cardboard in a shoebox lid - in such a way that water only runs towards the channel and nowhere else. You should already organize an appointment with a professional now.

I actually managed the screed quite well thanks to this forum

What exactly does that mean?
I naturally assumed that a sloped screed was meant.

If you do it right, it also works with the desired tiles.

What was the plan for the edge on which the glass shower wall is supposed to rest? If there is to be no visible edge, you need a slope towards the central joint as you want to lay it – I repeat myself. We have it like that, only with a straight channel.

And yes, the tiler already set that up when laying the screed.

Tip with the shoebox is not the worst.