ᐅ Tiles coming loose under stair stringers

Hello everyone,

We have been living in our house for almost 3 years now. Unfortunately, a defect has appeared.

Several tiles in the area of the front door (first row of tiles) have come loose from the substrate and are now hollow. This is not a big issue, the tiler has already been informed and will fix the problem next week.

However, I see a bigger problem. Right in front of the side panel of the front door is the staircase leading to the upper floor. In the area of the front door, the staircase stands on the tiles, and one of these tiles is affected. When you step on the staircase, you can hear the tile is loose and creaks underfoot. This did not happen before.

Is there any way to fix this without having to dismantle the staircase?

Thanks and best regards,
Matthias

I am quite surprised by the answers.

I will try to take some photos of it later.

In general, what theoretical options are there for renovation here?

The statement by @KlaRa

KlaRa schrieb:
Let's hope for you that this is not a systematic error....

makes me suspect that it could become more complicated if it turns out that the beam is actually resting on the tiles.

The staircase will not fully rest there, as it is a modular staircase system. Each step is individually anchored into the load-bearing wall. Only the first steps at the bottom (the staircase has a 90-degree turn at the base) have a support on the tiles in front of the side panel of the front door.

Here is an old photo from the construction phase.

There is not much to see in the picture. I won’t be able to help you with further measures to be taken, as experts are needed for that.

I am aware of that. My statement was meant to support the idea that the entire load is not concentrated solely on the tiles, as the steps are anchored into the wall.