Surcharge KfW 70

therefore "error on my part" ;) These are aerated concrete blocks with the indicated insulation values. This is stated in the construction and performance description... Regards

Hello,
could it be that you are confusing the U-value W/(m²K) and the lambda value here?

Best regards
Jochen

Looks just like .... U = 0.23 W/(m²K) with lambda 0.09 should be sufficient for KFW70, by the way.

uuhhh. absolutely. next time I'll do some research beforehand before I ask something :confused:
So: 0.23 W/(m²K) if the Lambda corresponds to 0.09
to
0.27 W/(m²K) (which probably is not sufficient for Kfw 70)

:)

So it is probably .... with 0.27 you won't get by, but as I said, much more counts than just the exterior walls.

Why was my link to KFW achievement with aerated concrete deleted?



Hello,

because the forum rules do not allow you that?

Rhenish regards
Construction expert