ᐅ Exterior wall construction made of which material?

Pest or cholera? Soundproofing or without polystyrene? Both would only be possible with brick cladding. Double-shell construction plus rock wool plus air cavity. Karsten

Well, if the medication is that expensive, I would go with cholera... meaning soundproofing with polystyrene. By the time I run into any issues with it, many others will probably have tried solutions before me. After all, such ETICS (external thermal insulation composite systems) weren’t invented by amateurs. I hope so.

PowerBauer schrieb:
To avoid opening yet another thread, I’ll just join in here.

That’s kind of you. Here’s an answer for that: yes, Ytong is a brand name for aerated concrete (there are also Hebel and others), just like Poroton (and others) are for porous bricks.

PowerBauer schrieb:
I think it’s more about economic considerations, and that sand-lime brick plus EPS is simply cheaper for the supplier.

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

PowerBauer schrieb:
Such an external thermal insulation composite system (ETICS) hasn’t been invented by amateurs. At least I hope not.

More likely lobbyists. To put it bluntly and crudely, and no doubt this will immediately be criticized as an unprofessional, ignorant, and defamatory “argument”: simply put, more yogurt containers are thrown away than can be melted down into park benches, so subsidizing the material’s use on house walls is necessary. Of course, this is just my irresponsible ignorant rambling.

PowerBauer schrieb:
It’s more of a gut feeling thing.

That’s okay. You have a feeling and a mind, and no one else will bathe in it if you leave the decision to the “wrong” one of the two. Anyone telling you what is “right” may have their own interests—economic or ideological. You can listen to nonsense from all “sides” until the “stupid” and “smart” mix into a loud cacophony.

You’ll find it hard to get the absolute objective “philosopher’s stone,” and the world won’t end if you accidentally find only the third-best solution. What is quite clear though—different for every supplier—is the wall construction the installer knows best. Let’s assume stone C is the holy grail: even then, it wouldn’t be smart to insist on C from an installer with the most experience in X. After all, you want a house on the plot, not just theory. One that is as free of defects as possible—and here the installer’s routine is “half the battle.” The same applies to other components: don’t have someone who only knows and “can” enamel cups install your tiled shower floor. If the shoemaker sticks to his last, the result will be best. Building material or method and installer form a “system.”

No one will relieve you of the residual risk that the installer’s choice was influenced by which manufacturer had the (to use a phrase once spoken to Heino) fresher strawberries at their seminar.

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PowerBauer schrieb:
Oh, okay. Actually, I saw this as an advantage of monolithic construction because according to the U-value calculator, the thermal phase shift is significantly longer there (EDER brick: 24h vs calcium silicate brick + EPS: 10h). Or am I misunderstanding this?

Yes, that interpretation is incorrect.

Calcium silicate brick, as well as concrete, allow heat to pass through quite easily. That’s why insulation needs to be applied on the outside. However, due to their mass, they can absorb a large amount of heat.

You can see this in the U-value calculator’s heat storage capacity...
Quote from the U-value calculator:
The heat storage capacity (inside) indicates how much heat the building component absorbs when the room temperature is increased by 1°C (1.8°F) while the outside temperature remains unchanged. A high value means slow warming—especially during winter when heating is on, but also in summer, for example, due to solar radiation through glass surfaces. On the other hand, a high value also delays cooling down, for instance when the heating is turned off or fails.

@tempic, thanks for the clarification. That certainly makes sense. But shouldn’t the phase shift also correlate with that? I’m still missing the connection there...

11ant schrieb:
Simply put, more yogurt containers are thrown away than can be recycled into park benches, which is why subsidies are needed to encourage storing this material on house walls.

Just to be neutral: To what extent is this actually subsidized? The U-value isn’t being artificially adjusted, and for funding programs like those from KfW, this isn’t considered separately, is it?

11ant schrieb:
You’ll have a hard time finding the absolute objective “philosopher’s stone,” and the world won’t end if you only find the third-best solution by accident.

Well, somehow I had hoped that after all these years an optimal solution would have emerged. But I guess that only exists if you have enough money and space.
Every homebuilder just wants the best, otherwise this forum wouldn’t exist 🙂

11ant schrieb:
What does exist quite clearly—although it varies by supplier—is always the wall construction that the installer is most familiar with.

That’s a very understandable point. So I guess I’ll have to struggle with those special anchors…

PowerBauer schrieb:
Well, somehow I had hoped that after all these years an optimal solution would have emerged. But it seems this only exists if you have enough money and space.

The best solution is almost always the most expensive. If our budget had been larger, we wouldn’t have built a two-layer wall with Poroton, mineral core insulation, and facing bricks, but rather a two-layer wall without core insulation. The perfect is the enemy of the good. If I had to build with ETICS (external thermal insulation composite system), I would have preferred to stay a renter. Better choose a general contractor who builds monolithically, whatever material they use.