What can be detected in a blower door test, which house values?

Hello,


That is partly correct because it is only a snapshot; on the other hand, it highlights leakages and thus helps to prevent heating costs from spiraling out of control.

The construction quality should be monitored by the site manager during the construction phase or – as I often suggest here – if there is uncertainty about the expected services, it should be outsourced externally to a trusted institution/person.

Best regards

Bauexperte is right.

The third possibility would then be what happened to me, that there is actually certainty regarding the expected performance, but this later proves to be incorrect.

Hello,

The 3rd possibility would then be, as happened to me, that there is actually certainty regarding the expected performance, but this later turns out to be incorrect.

What happened to you?

Kind regards

Hello!

Isn't there the principle: Either insulated and heated or uninsulated and (of course) unheated!?

Otherwise: see above.

Best regards, Tomtom.

But that alone cannot be the solution to the puzzle, at least not in my building shell. The insulation is also present in the heated and developed areas of the attic, as I could verify through two existing inspection openings.
Furthermore, that still does not explain the moisture on the ground floor.

Let's see, the external expert will tell me on Tuesday.

Hello,

What has happened to you?

Kind regards

Hi Bauexperte,

see previous page. We are currently more or less in the final phase. Drywall in the attic finished, painters and tilers were just at work when last weekend, following a bad premonition because there was still so much condensation moisture in the attic, I took the liberty to open the vapor barrier. Behind it, I found completely soaked insulation and significant condensation on the underlay membrane.
However, this was not only in the unheated attic but also in the heated rooms, which are already fully finished and wallpapered. Here there are inspection openings that allow crawling behind the knee walls, so I was also able to perform an inspection here, unfortunately with the same devastating result.
Furthermore, moisture is forming on the exterior walls of the ground floor, especially in the corners and in the unheated utility room along the entire exterior wall as well as on the dormer at the transition to the drywall construction of the attic, which has already led to initial mold growth.
Nice mess, indeed.

...In addition, condensation forms on the exterior walls of the ground floor, especially in the corners...

A geometric thermal bridge!

Best regards.

A geometric thermal bridge!

v.g.

I assumed that too and had been relatively calm about it so far. It should actually resolve itself over time once most of the construction moisture is out of the house, or am I wrong?