Energy Saving Certificate KfW55 - Target KfW40 - Question: Steps & Costs

Oh man, who came up with this? This is botched times 10

Can you please explain that in more detail?

Can you first answer my question? Who came up with this? If it was you yourself, I don't blame you because you might not know any better, but you have already received so many hints from the blue ones, you should start thinking by now....

The original wall had a U-value of 0.135 and 60mm wood fiber insulation board and is thus the wall construction that was "proposed" by the carpentry. However, this is only sufficient for KfW55. Therefore, the energy consultant changed the wall accordingly so that a U-value of 0.11 was achieved ("Wand_Thermofibre.pdf") to meet KfW40. However, changes to the studs are necessary here, which will be complex and expensive. Therefore, my idea is that the wood fiber insulation boards could be doubled to 120mm to also achieve a U-value of 0.11 without changing the studs. Now my question was how the wall construction of the two variants looks like. But when I then read "das ist Murks hoch 10" that is not particularly constructive.

You can still upload any pdfs 43 more times that are already available in other forums. Just answer the one question: Who came up with this? You or the "entrepreneur"? It can't be that hard.

Who came up with this?

What exactly do you mean by that? I did write who came up with which wall structure. If you don't define your question properly, it's hard to answer. A "that" can be anything.

What exactly do you mean by that? I did write who came up with which wall construction. If you don’t define your question properly, it’s hard to answer. A "that" can be anything.

The question will refer to your #11, so your PDFs, the content! That’s where it was asked at least for the first time.