Hello everyone!
We have chosen a Flair 124 ZD from Town & Country. The plan was a 24 cm (9.5 inches) wall made of aerated concrete plan blocks with plaster applied directly onto the blocks. The builder recommends using a 30 cm (12 inches) wall made of the same material instead. Does that make sense, or is it just a way to charge more?
We have chosen a Flair 124 ZD from Town & Country. The plan was a 24 cm (9.5 inches) wall made of aerated concrete plan blocks with plaster applied directly onto the blocks. The builder recommends using a 30 cm (12 inches) wall made of the same material instead. Does that make sense, or is it just a way to charge more?
projekthausbau30 May 2014 12:36For us, a 36.5cm (14.4 inch) exterior wall made of aerated concrete blocks was the standard. Other builders of solid construction also recommended and advised this to us in advance.
blockhauspower30 May 2014 13:29A 24cm (9.5 inches) thick aerated concrete exterior wall achieves a U-value of about 0.76 W/m²·K, which is approximately three times higher than the value required by the energy-saving regulations.
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Doc.Schnaggls30 May 2014 13:30OK, did he say anything about the energy standard?
As a construction layperson, I find the 24cm (10 inches) wall without additional insulation a bit tight, since we have always been told that without extra insulation, a 36.5cm (14.4 inches) aerated concrete wall should be used...
I’m very curious to hear what our experts think about this...
As a construction layperson, I find the 24cm (10 inches) wall without additional insulation a bit tight, since we have always been told that without extra insulation, a 36.5cm (14.4 inches) aerated concrete wall should be used...
I’m very curious to hear what our experts think about this...
G
Guestgiver11 Oct 2017 12:32Hello everyone,
I am currently dealing with the exact same topic and am also building with Town & Country.
Although this topic is a bit older and the regulations have since changed, maybe we can revive the discussion as it still appears quite quickly in Google searches.
My building contract also only specifies a 24cm (9.5 inches) aerated concrete wall. At the moment, the house is still planned to be constructed according to the 2016 Energy Saving Ordinance regulations. However, after some research, it seems to me that 36.5cm (14.4 inches) is actually the standard, and 24cm (9.5 inches) is quite thin. Are there any more recent expert opinions or experiences on this?
I would really appreciate your help,
Best regards,
Christian
I am currently dealing with the exact same topic and am also building with Town & Country.
Although this topic is a bit older and the regulations have since changed, maybe we can revive the discussion as it still appears quite quickly in Google searches.
My building contract also only specifies a 24cm (9.5 inches) aerated concrete wall. At the moment, the house is still planned to be constructed according to the 2016 Energy Saving Ordinance regulations. However, after some research, it seems to me that 36.5cm (14.4 inches) is actually the standard, and 24cm (9.5 inches) is quite thin. Are there any more recent expert opinions or experiences on this?
I would really appreciate your help,
Best regards,
Christian
There was already a thread about this: https://www.hausbau-forum.de/threads/Porenbeton-Außenwand-vs-Energieeinsparverordnung.12844/
I also can’t imagine a 24cm (9.5 inch) aerated concrete wall. My garage walls are 24cm (9.5 inch) plus 14cm (5.5 inch) of mineral wool insulation between the rafters...
I also can’t imagine a 24cm (9.5 inch) aerated concrete wall. My garage walls are 24cm (9.5 inch) plus 14cm (5.5 inch) of mineral wool insulation between the rafters...
markus270311 Oct 2017 12:55In our initial contract with Town & Country, only 24 cm (9.5 inches) walls were specified, but we later switched to 30 cm (12 inches) walls. Otherwise, I believe it would not be possible to meet the energy saving regulations, and from both an energy efficiency and sound insulation perspective, I would recommend at least 30 cm (12 inches)!
We are completely satisfied with the 30 cm (12 inches) walls, but I cannot assess whether 36.5 cm (14.4 inches) would provide a significant additional advantage.
We are completely satisfied with the 30 cm (12 inches) walls, but I cannot assess whether 36.5 cm (14.4 inches) would provide a significant additional advantage.