ᐅ Is a 30 cm aerated concrete (e.g., autoclaved aerated concrete) wall sufficient?

11ant schrieb:
This can be easily clarified by having the original poster contact Massivhaus Mittelrhein directly. The most straightforward option for aerated concrete in a single-family house with a wall thickness of 40cm (16 inches) is aerated concrete with a density class of 425 – using density class 300 aerated concrete plus insulation boards, in my opinion, would be nonsense.

Or alternatively, choose the 30cm (12 inches) Poroton blocks instead of aerated concrete.

sarajevo83 schrieb:
Or alternatively choose the 30cm (12 inches) Poroton block instead of aerated concrete.

What would be the point of that?
This wall thickness with porous bricks is already insufficient as a monolithic construction, would require additional insulation that takes up too much space, and is no longer a common stock size on the market!
Besides, you’d be moving even further away from my stone mantra (which is not there for my amusement but for a reason).

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Strange, since the last four new buildings in our town (all with different companies) have been built using the 36.5 Poroton T9 blocks without insulation.

sarajevo83 schrieb:
Strange, since the last four new buildings in our town (all with different companies) were constructed with 36.5 Poroton T9 blocks without insulation.

Why is that strange?

nordanney schrieb:
What is strange about that?

Not strange, I still mean modern, with good insulation values and reasonable stability or durability. Otherwise, not everyone here would build it this way.

I only see little difference between the 30cm (12 inches) and 36.5cm (14 inches) thicknesses that would justify the huge additional cost.

Take the filled Poroton RX60 from JuWö:
With the 30cm (12 inches) version, you can achieve KfW55 standard, and with the 36.5cm (14.5 inches) version, even KfW40.