Exterior masonry made of which material?

Plague or cholera? Soundproofing or without Styrofoam? Both would only be possible with facing brick. Double-shell plus stone wool plus air layer. Karsten

Alright, if the medication is that expensive, I would choose cholera... meaning sound insulation with Styrofoam. By the time I have problems with it, many others will probably have tried solutions before me. Such an [WDVS] was not thought up by laymen either. I hope.

To avoid opening the umpteenth thread now, I'll just join in here.

That's nice. For that, you get an answer too: yes, Ytong is a brand name for aerated concrete (there are also Hebel and others), just like Poroton (and others) for porous bricks.

I rather think economic considerations played a role here and KS+EPS is simply cheaper for the provider.

Whether one uses stone A, B, C, X, Y, or Z: on the one hand, many builders simply adopt the preference of their father and/or trainer; and on the other hand, there are "information events" not only for doctors.

Such an ETICS wasn't invented by laymen either. I hope.

More likely by lobbyists. Saying it very bluntly and harshly and there will certainly be scolding and shame for this unserious, ignorant, defamatory "argumentation": simply put, more yogurt cups are thrown away than can be remelted into park benches, so it has to be subsidized that this stuff is deposited on house walls. Of course, this is only my irresponsible ignorant babble.

It's more of a gut feeling thing

That doesn't matter. You have a feeling and a mind, and no one else bathes it out when you leave the decision to the "wrong" one of the two. Anyone who tells you what is "right" there may have their own interests – economic or ideological. You can listen to chatter from all "directions" until "stupid" and "smart" mix into a big cacophony.

You will hardly find the absolute objective "philosopher’s stone," and the world won't end if you accidentally only find the third-best solution. What there is quite clearly—relatively different for each provider—is always the wall construction the processor knows best. Suppose stone C were the philosopher's stone: it still wouldn't be wise to tell the processor with most experience in X that you absolutely want C. Because in the end, you want a house on the plot, not just theory. Preferably defect-free, and that's where the processor’s routine is "half the battle." This applies to other components as well: don't have a tiled shower floor made by someone who only knows and "can" enamel cups. When the shoemaker sticks to his last, the result is the best. Building material or method and processor form a "system."

No one will absolve you of the residual risk that the processor was influenced by which manufacturer had the (to borrow a phrase from Heino) fresher strawberries at their seminar.

Oh, okay. That was actually still an advantage for the monolithic construction in my eyes, since according to the U-value calculator the phase shift is significantly longer there (EDER brick: 24h vs KS+EPS: 10h). Or am I interpreting that incorrectly?

Yes, the interpretation is wrong.

Calcium silicate brick, as well as concrete, allow heat to pass through very well. That is why insulation must be applied on the outside. However, due to their mass, they can absorb a lot of heat.

You can see this in the thermal storage capacity on the U-value calculator ... Quote U-value calculator: The thermal storage capacity (inside) indicates how much heat the component absorbs when the room temperature is increased by 1°C and the outside temperature remains unchanged. A high value means slow heating - especially in winter with the heating, but also in summer, e.g. due to solar radiation through glass surfaces. On the other hand, a high value also delays cooling down, e.g. when the heating is turned off or fails.

, thanks for the clarification. That obviously makes sense. But shouldn't the phase shift also correlate with that? I'm still missing the connection...

simply put, more yogurt cups are thrown away than can be melted down into park benches, which is why subsidies are needed to have that stuff stored on house walls.

Just neutrally: To what extent is that actually subsidized? The U-value isn't artificially improved here, and, for example, with KfW funding, that isn't separately considered, right?

You’ll have a hard time finding the absolute objective "philosopher’s stone," and the world won't end if you accidentally find only the third-best solution.

Well, somehow I had hoped that after all these years an optimal solution would have crystallized. But apparently, that only exists with enough money and space.
Every homeowner just wants the optimum, otherwise this forum wouldn’t exist

What does exist quite clearly - relatively different for each supplier - is always the wall construction the installer knows best.

That is a very understandable argument. So I guess I'll have to struggle with these special anchors...

Well, somehow I had hoped that after all these years an optimal solution would have emerged. But that apparently only exists with sufficient money and space.

The best solution is almost always the most expensive. If our budget had been bigger, we would not have built double-shell with Poroton, mineral core insulation, and facing bricks, but double-shell without core insulation. The better is the enemy of the good. If I had had to build with ETICS, I would have preferred to remain a tenant. Better find a general contractor who builds monolithically with whatever material.