ᐅ The screed has settled outside the shower area.

Hausbaer schrieb:

OK, the question is whether it can be considered a construction defect that can be reported to the developer, or if subsidence of the screed in the bathroom due to the wall waterproofing is not regarded as a defect.

Subsidence of the screed to some extent is probably never a defect, but rather normal. It is related to the insulation layer underneath. Only if the wrong material was used, which is not sufficiently load-bearing, could it be considered a defect.
Has the joint to the wall cracked?

That is also why it is recommended not to install baseboards immediately in the house, since the screed can still settle and gaps may then appear.

nordanney schrieb:

Some settling of the screed within a certain range is probably not considered a defect but is normal. It is related to the insulation beneath it. Only if the wrong material was used, which is not sufficiently pressure-resistant, could it be a defect. Has the joint to the wall cracked?

That’s also why it is recommended not to install baseboards immediately, since the screed can still settle and joints may then appear.

Hello, I understand. My question is whether stricter or special building regulations apply in wet rooms due to the increased water exposure, or if this is instead managed through the wall waterproofing. I suspect it’s the latter, but you never know—perhaps someone here in the forum has more knowledge about this.

ypg schrieb:

So far, it’s not really clear which corner or how far that corner is from the shower area, or where exactly the screed has settled.
It’s normal for screed to settle over the first one or two years.
That’s why I’m referring to a photo again!

I don’t have a photo handy right now, and I’m not really comfortable sharing a picture of my bathroom online at the moment.

The corner is about half a meter to one meter (about 20 to 40 inches) away from the shower area. The shower area itself has its own screed with a slope. Meanwhile, the adjacent screed (not part of the shower area) also has a slope so that any water coming from showering (we don’t have a glass door, so water easily ends up there) can drain away from the non-shower area—but not into a channel; rather, the water collects along a wall in the non-shower area.

I’m hoping that the wall and floor waterproofing can handle this.

Hausbaer schrieb:

Whether stricter or special regulations apply in sanitary areas due to the increased amount of water during construction, or if this is then regulated through waterproofing on the walls. I suspect the latter,

Actually the latter. There is surface waterproofing applied under floors and on walls for that purpose.

Hausbaer schrieb:

I don’t have a photo at hand right now, and I’m also not very comfortable sharing one of my bathroom on the internet.

If the need for a photo is greater than the concern about a possible construction defect, you can also end the thread here...

Hausbaer schrieb:

I just hope that the waterproofing on the walls and floor will hold up.

It should hold up. Whether the tile adhesive and the wall will withstand it in the long term, or if damage will occur, is another matter.

Which of the knowledgeable people here is actually asking what could be the cause of a "sinking screed," and whether this might qualify as a warranty case against the screed installer (who presumably also installed the insulation)?
Jumping to conclusions and saying "oh, it’s not that serious" are not helpful responses.
And every repair, without exception, is only carried out once the cause of a defect has been identified.
That is not the case here. No one is asking why a floating screed in residential construction can settle.
Yes, the construction must be opened up. Ideally, this should be done after a formal defect notification in the presence of the relevant contractor who originally installed the screed.
All other suggestions are of little use!
Greetings to all: KlaRa

KlaRa schrieb:

Carelessly patching things up and saying "it’s not such a big deal" are not helpful responses.

Did anyone say that? Photos were requested, along with information about the condition of the joints. There was also a note that the wrong insulation material might have been used under the screed.

KlaRa schrieb:

No one is asking why a floating screed might settle in residential construction.

Hmm. Maybe because everyone knows that, depending on the insulation used beneath the floating screed, some compressibility is indicated in the product specifications.
Maybe it’s not the screed that has settled, but the whole building is now slightly tilted? Who really knows...