We want to build an ecological house

Hello,

we want to build (have built) a single-family house and have actually already decided what it should have. However, the exterior wall is still questionable.
There are different building materials and designs for this. In many publications, timber panel, timber stud, or timber frame construction is recommended. The problem I see with this, however, is the lack of possibility to hang a kitchen cabinet or other heavy items on the wall if there is only a drywall panel above the timber panel on the inside.
Of course, you can have an OSB board installed instead of the drywall panel in this area, but then it is no longer vapor permeable.

Moreover, it may be that today I say nothing heavy should be hung there, but in 10 years this might be the case after all.

Is there a way to enable a stable AND vapor-permeable interior wall in timber frame construction? For example, I have thought about glued laminated timber boards. They should be vapor permeable and also stable enough.
However, I have not found this option on the website of any prefabricated house manufacturer so far.

Do you perhaps know one who does it that way? Or do you have alternatives for a stable, vapor-permeable interior wall?

Thank you very much for your answers!

Whether the walls can hold heavy objects depends entirely on the manufacturer. Our manufacturer installs solid wood panels on their timber frame construction. And then drywall on top of that.

A colleague built with them 4 years ago and hasn’t used a single anchor in his entire house. Wood screw and it fits.

If you want, I can send you the provider via PM. I don’t want to openly advertise here. I’m not a salesperson, just a satisfied customer so far.

Yes, that's exactly how I imagine it, first a solid wood wall and then a drywall wall on top, which can then be painted. I would be very happy to receive a PM with the manufacturer's name.

Hi,
do you really want a completely diffusion-open wall construction?

Regards

Why not? I read everywhere that it is good for the air in the house. Or did I misunderstand something?

There is of course nothing against a diffusion-open construction. You just have to ensure a flawless wall structure. The diffusion capability of the components must increase from the inside to the outside.

And somehow you also have to create an airtightness layer.