I need advice on the cost of heating

Is it even known what aerated concrete is? I think Poroton (which can be filled with Styrofoam beads, etc.) is being confused with aerated concrete

Maybe you should take a look at my profile once ;) Rhenish greetings

Good evening,

But still, aerated concrete blocks are not filled with anything ;-)

Then it is not enough - my insignificant opinion. There are organic as well as mineral fillings.

What is wrong in your opinion to achieve KFW55? We simply don't want any Styrofoam on the wall, especially since according to my "provider" it is not necessary to achieve the goal.

You can stay with the informal "du" :-)

I already wrote that. If your provider says it works, he should give it to you in writing ... without any loopholes.

Rhineland greetings

The whole thing is documented in writing, after all, a KfW55 house was sold! ;)

Hello,

The whole thing is fixed in writing, after all, a KfW55 house was sold! ;)

Then go ahead and report - if you want to - which additional measures were taken ... at your own expense or at the expense of your provider.

Rhenish greetings

Hello,


Then report back - if you want to - which additional measures have been taken ... at your expense or at the expense of your provider.

Rhenish greetings

Why do you assume that something has to be changed to achieve that?

Hello,

Why do you assume that something has to be changed to achieve that?

17 years of continuous learning ;)

Rhenish greetings