ᐅ Single-Family Home – Is Poroton the Right Choice?

The wall construction is especially important when using ETICS (external thermal insulation composite systems). The properties of the bricks are simply not comparable, even if the U-value might be the same.

I also think you don’t recognize the difference between thermal insulation and heat storage. Good thermal insulation requires a lot of AIR, while heat storage needs a lot of MASS. Porous, lightweight bricks like Poroton or aerated concrete (Ytong) are light and provide good thermal insulation. Solid bricks like calcium silicate bricks (heavy bricks) have poor insulation but a high heat storage capacity. When using ETICS, the heavy brick has the advantage because it helps stabilize the indoor temperature, while the insulation is handled by the ETICS.

That’s why I used aerated concrete (insulation) for my exterior walls and calcium silicate bricks (heat storage) for the interior walls.

But as mentioned before, it’s your house and you have to live in it.

Tom1607 schrieb:
I also think you do not recognize the difference between thermal insulation and heat storage.

Thank you for your comment. What makes you say that? I am very well aware of the properties. I simply said:

robi782 schrieb:
For me, a stone that could also serve as a replacement for an external wall insulation system has a certain thermal conductivity.

As I said, I have not made a final decision yet.

Regards

Still wrong! A brick intended to replace an external thermal insulation composite system (ETICS) should preferably have NO (or only a very low) thermal conductivity.

As for the rest, pretty much everything has already been said. And I wouldn’t neglect sound insulation even on a side street, although not to the same extent as near a highway. After all, lawnmowers, playing children, and barbecue parties are everywhere. The garbage collection also comes to the village at six in the morning...

Where did I write something incorrect about thermal conductivity??

Thank you for your tips and help @toxicmolotow and everyone else.

We built our house, for example, using an unfilled T8 Poroton brick with a thickness of 36.5cm (14 inches) WITHOUT any additional external thermal insulation. Together with the windows, insulation under the slab, insulation on the top floor ceiling, and a controlled mechanical ventilation system, we achieved a KfW55 building standard.

If you want to build with Poroton, why add Styrofoam insulation on the outside?

Hello,

Two things that personally cause me a lot of trouble with Poroton:

- Attaching things to the interior walls --> a disaster
- Lots of insulation and little mass means – careful, a negatively charged term – a barracks-like climate.

Best regards, Barossi