Sliding door with soundproofing: What options/providers are available?

Hello everyone,

I would like an external sliding door with soundproofing to separate the living/dining area (with open kitchen) from the hallway (with open staircase) through the door. The door should be 1m wide, see photo. What options and providers are there for such doors? Has anyone had this installed here? Looking forward to tips etc.

Where, so on which wall is it supposed to run? But with an overlapping door leaf, quite a bulky structure would have to be built if it is supposed to dampen almost all noise. In my opinion, an overlapping sliding door conflicts with soundproofing and also with noise insulation.

Sliding door and soundproofing is a tricky thing. Definitely choose a heavy wooden version, not glass.

Sliding door and soundproofing is a tricky thing. Definitely choose a heavy wooden version, not glass.

We have installed an old heavy sliding door (it used to be a laboratory door). Back then in the lab, there was a bottom guide – not with us. Still: it is anything but tight.

For soundproofing, you need to seal hermetically. Soundproof doors have a sealing lip at the bottom that seals the air gap under the door.
How you want to manage that with a sliding door... it might exist, but it will definitely be extremely complicated and expensive.
Take a normal door, just as planned in the [Grundriss].

Thank you for all the ideas so far.

Where, that is, on which wall should it run?

I marked it in red. The old door drawn in should of course be replaced by the sliding door. Reason: The door is always open anyway (the passage is used very often) and the door would just be in the way. For my wife, removing and rehanging the door (my crazy suggestion) as needed (e.g. kids upstairs are loud) is not a solution. For me, soundproofing when needed is quite important. So now we are looking for a good solution.