Difference between apartment door & soundproof door

Hello everyone,

I am currently looking for interior doors and apartment doors for our 3-family house. At the moment, my favorite is "Westag" in the version "CPL Arctic White."

I have two questions about the doors:

1. Frames for interior doors and apartment doors have a sealing profile. However, frames for apartment doors apparently have a sealing profile with sound insulation (difference?) and a sound-insulating strike plate. How does a sound-insulating strike plate differ?

2. For the bathrooms (with washing machine) and storage rooms of the apartments (including controlled residential ventilation unit), I am considering using soundproof doors. Here I can select "Schallex with bottom door seal" for the door leaf. Would that make sense in your opinion? (Possibly still without a keyhole). Completely dispense with it or even take the better frame?

Best regards

Here I can select "Sound insulation with bottom door seal" for the door leaf.

I had quite a hassle with soundproof doors, especially because of the controlled residential ventilation. There has to be a gap of at least 1 cm under the door for ventilation.
I have soundproofing on some doors that have a slit at track foot height which blocks the sound but lets the air through - at least that's what the manufacturer claims. Well, in the end I found it a waste of money and wouldn’t do it again.

I have no soundproofing on the washing machine and you only hear the spinning. And only if I sit quietly and relax. During the everyday hustle, even the spinning noise gets drowned out.

Now there would be the solution to install supply and exhaust air in every room without overflow areas. This just means much more effort and material usage. It’s all a matter of priorities...

I had quite a hassle with soundproof doors, especially because of the controlled residential ventilation

Does this also apply if there is no valve (supply and/or exhaust air) in the storage room? The controlled residential ventilation unit would have to be autonomous.

I have no soundproofing for the washing machine and you only hear the spinning.

Okay, then the same applies to the bathroom regarding the exhaust air of the controlled residential ventilation.

It's all a question of priorities...

I should have thought of that from the beginning. Maybe the noise level of the controlled residential ventilation system isn’t so bad after all. We'll have to see.

Here, it is also mandatory in the technical room (I do not live in [D]) because it is a room that can be entered and therefore there would be insufficient air if there is no circulation slot under the door. Whether the threat of suffocation is realistic, I do not know. But the ventilation slot is the rule here and must be observed. I have my washing machine in the technical room without soundproofing and that is not a problem.

If you have no air exchange with other rooms, you have no problem. However, you should not use the technical room for drying in that case.

As always with noise, the most important question is how sensitive you are and the second most important is how the rooms are distributed in the house. For example, it would be unfavorable if the washing machine is turned on late at night and someone next door is supposed to sleep. On the other hand, I find it rather unproblematic if you can hear the washing machine a little while working from home.