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

Why don’t you respond to my criticism then @toxicmolotow? I’ve been trying to discuss and weigh the pros and cons with you. I’m not fixed on any decision yet. But if you bring up arguments and advantages that, according to the wall construction values I mentioned earlier based on the "u-value.XXX," are not relevant, I wonder how we’re supposed to communicate reasonably here.

So let’s leave it at that. All the best to you.

Regards

@robi: You enter some values into an online calculator and simply misinterpret the results. Naturally, there is hardly any difference in the U-value between calcium silicate blocks and Poroton when external thermal insulation is applied, since the surface temperature is high for both materials and there is therefore no temperature difference between the interior and the exterior surface of the wall.

Massive building materials provide better protection against summer heat on the inside, which is why calcium silicate blocks make more sense with an external wall insulation system (EWIS / ETICS). If you prefer to use Poroton, you can save on the insulation by slightly increasing the thickness of the exterior wall.

Regards

blockhauspower schrieb:
Of course, there is hardly any difference in the U-value between calcium silicate brick and Poroton once you apply external thermal insulation, since the surface temperature between the building materials is high anyway and thus there is no temperature difference between the indoor space and the outer wall surface.

That is exactly what I have been saying/writing all along! Due to the WALL CONSTRUCTION, it hardly matters whether it’s calcium silicate brick or Poroton. Only when you look at the brick alone.

blockhauspower schrieb:
You enter random values into an online calculator and simply misinterpret the results.

Random values? What exactly do you mean by that, or how do you come to that conclusion? The values correspond to the building authority’s specifications. Therefore, I don’t understand your comment!

blockhauspower schrieb:
If you want to use Poroton, you can skip the external insulation with a slightly thicker outer wall.

As I have mentioned several times, I am not yet decided between Poroton or calcium silicate brick. However, I have basically ruled out Poroton with, for example, 36cm (14 inches) thickness plus insulation filling, as I have read a lot in this forum about the insulation filling “coming out.” Also, wouldn’t the shell construction with this material cause higher costs?

Best regards

robi782 schrieb:
Now I’m wondering if just 17.5cm (7 inches) will be a disadvantage for us, and if so, which one(s)?

Regarding the color of your car: No!

Everything else can surely be calculated by your online calculator.

I meant to say that if an external thermal insulation composite system (ETICS) is desired, solid components like calcium silicate blocks offer advantages in terms of building physics. Without ETICS or cavity insulation, the exterior wall masonry should have appropriate thermal insulating properties. I don’t consider it sensible to use a highly insulating block and then apply ETICS on top of that.

For the builder, of course, the lightweight block can have benefits because it is much easier to work with.

By “values” I mean the values from the U-value calculator, which need to be interpreted correctly.

Best regards

blockhauspower schrieb:
What I meant to say is that if an external thermal insulation composite system (ETICS) is desired, massive components such as calcium silicate blocks have building physics advantages. Without ETICS or cavity insulation, the exterior wall stone should have appropriate thermal insulation properties. Using a highly insulating stone and then adding ETICS on top does not seem sensible to me.

Absolutely.