ᐅ Aerated concrete blocks or clay blocks for a single-family home
Created on: 9 Jul 2019 19:06
0
0Alex00
Hello everyone,
I want to build a single-family house in the urban villa style with 165m2 (1778 sq ft).
I plan to use a monolithic wall construction with a wall thickness of at least 40cm (16 inches) because I do not want additional insulation.
Which material is better: aerated concrete or clay block?
What are the advantages and disadvantages?
Which material would you recommend?
Costs?
Thermal insulation?
Thanks, regards Alex
I want to build a single-family house in the urban villa style with 165m2 (1778 sq ft).
I plan to use a monolithic wall construction with a wall thickness of at least 40cm (16 inches) because I do not want additional insulation.
Which material is better: aerated concrete or clay block?
What are the advantages and disadvantages?
Which material would you recommend?
Costs?
Thermal insulation?
Thanks, regards Alex
face26 schrieb:
Both options are available with the same insulation values.Aerated concrete always had to be used in greater thickness, which brings other drawbacks. The possibilities to increase thickness are also limited.
With Poroton, there are different fillers that improve thermal insulation. So, with filled Poroton, you get better U-values than with aerated concrete of the same thickness.
KfW 40 standard with a 365mm (14 inch) block? I don’t believe that.
guckuck2 schrieb:
Aerated concrete always needs to be thicker, which brings other disadvantages. The possibilities to increase thickness are also limited.
Poroton has different fillings that improve thermal insulation. With filled Poroton, you can achieve better U-values than with aerated concrete of the same thickness.
KfW 40 with a 365mm (14.4 inches) block? I don’t think so. How do you come to that conclusion? Both types of blocks come in various versions.
Aerated concrete is available, for example, in 365mm (14.4 inches) thickness with a thermal conductivity (lambda) of 0.07. Just check online and search for Therm Ultra.
You can achieve the same U-values with both materials.
When discussing this topic, let's not forget how much actual masonry we are dealing with: although solid and certainly more than behind insulated foam panels, the upper floor in so-called Alternative Villas with truss roofs often consists practically only of lightweight partition walls. Regarding sound insulation, I’m happy to say it for the hundredth time: there is no building material whose specified properties alone can even come close to compensating for incorrect installation.
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face26 schrieb:
Where do you get that from? Both types of blocks come in different versions.
Aerated concrete is available in 36.5cm (14.4 inches), for example, with a lambda value of 0.07. Just turn on the internet and search for Therm Ultra.
You can achieve the same U-values with both. Yeah, you're right, I checked again.
Then it has an SFK of 1.6 with an RDK of 0.25. That’s not much masonry left. The structural engineer will be happy.
guckuck2 schrieb:
Then you get an airtightness of 1.6 m³/(m²·h) at a pressure difference of 0.25 hPa (SFP 1.6 at RDK 0.25). That’s not much masonry left. The structural engineer will be happy. You can achieve that in a "normal" single-family house as well.
It is more a matter of belief than fact.
That’s why the often repeated advice is to base the decision more on the installer than on specifications.
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