Y-Tong (aerated concrete) - quality building material? (sound insulation!)

Does it make sense to build the exterior of a house with Ytong and construct the interior walls with KS stone for soundproofing inside the house?

At first, it makes sense regarding labor costs to erect the non-load-bearing interior walls in a separate step decoupled from the exterior walls (especially in drywall, because it is easier to adapt).

In my opinion, the need for soundproofing inside a single-family house is overrated: the tantrum phase of the kids does not last forever, and in the marital bed, one does not really imitate the rutting scream of the stag in the picture hanging above 1:1.

The bottom stone of the interior walls is also Ytong in each case.

Does that mean the interior walls have a base stone layer of a lower density class than what is above it???

I actually thought that this is not unproblematic because of the different settling behavior. But I might be wrong.

This is also often discussed here, that this requires special measures when wallpapering around the corner and is not quite the philosopher’s stone.

You can see this in the pictures:

White on white, it is said afterwards that this would work.

Does that mean the inner walls have a cill stone layer of lower density class than what comes above? ? ?

That was probably more of a KS cill layer.

In my opinion, the need for soundproofing within the single-family house is hyped:

I see that completely differently. 11-17cm of perforated Poroton is in my opinion like cardboard, everything passes through. Toilet, conversations, TV from the room next door. It’s not about (rutting) shouting but about normal everyday noises that disturb when one wants to sleep and the other is still awake.

You can see that in the pictures:

Huh? The exterior walls are visible in the first picture, aren't they?

I see that completely differently. 11-17cm perforated Poroton is in my opinion like cardboard, everything goes through it.

My father lived for years in aerated concrete, even on a busy road; and I myself had a workshop with an office wing, also made of aerated concrete, both without sound problems. The quality of this building material would have to have changed massively in the last forty years if it is no longer any good today, as is often read here.

Regarding porous bricks, I am more inclined to believe that – although without personal experience – but in this and other forums the general consensus is that nothing else except KS is any good.

In addition, with sand-lime brick there is a great risk that the sound will actually be increased by the ETICS and that you really get nothing from the sand-lime brick.

I recall a forum post a few weeks ago (though not whether here or in the green forum) dealing precisely with this issue: sound transmission throughout the entire apartment building, unclear whether via pipe runs or via the ETICS.

Hello everyone,

I'll just briefly add to this topic (sorry for ot...):

Do you think it's a good idea to build a small platform (195mm high, 1970mm long, and 874mm wide) with Ytong stones, which will be tiled and must be walkable?
(I only find statements about wall tiles on aerated concrete otherwise...)

Thanks!