Wall construction of prefabricated house - What is really good quality?

Hi guys,

the prefabricated house manufacturers using timber frame construction all have a slightly different structure for their walls. Each manufacturer, of course, promotes their construction method and wall as the best on the market. Everyone tells you they have the top product. But almost everyone fails to provide proof.

But I would like to see some concrete evidence and tests.
I am curious if there are really any tests regarding structure and quality somewhere.

What I have found are the recurring tests from Focus Money, etc. But that says nothing about structure, materials used, and quality.

Are you aware of this?

Thank you very much

Regards

Steffen

I don’t know any proper tests either. But my layman’s opinion is that people are moving more and more away from using foils in the wall and no longer installing mineral oil-containing materials on the outside. Although some manufacturers probably still attach Styrofoam to the exterior wall. More are moving away from that and instead use diffusion-open wood fiber insulation materials. I also built that way, but with a local carpentry company. Instead of the foil, the OSB board is airtight glued, acting as a vapor retarder. Due to the diffusion openness, the wall structure is more fault-tolerant. Wood fiber was blown in between the studs. However, this wall construction is not entirely ecological, as it is sometimes portrayed. An installation level on the inside definitely makes sense, so you don’t have to go through the airtight layer or only rarely.

In any case, I would look at a double layer of cladding on the inside of the wall structure. For me, it is only clad once, and you can really hear that in terms of sound.

Not only double-planked but with OSB underneath, so you can simply drive a Spax into the wall and everything holds.

Schwörerhaus has almost no Styrofoam left in the wall.

So, for me, it was only covered once with 12.5mm gypsum fiberboard. Only in special places (kitchen upper cabinets, TV wall, shower partition, mirror cabinet, etc.) were OSB boards installed under the gypsum fiberboards. I don't think you have to double-panel everywhere. With gypsum plasterboards, more so. Of course, it's better, but also more effort/cost.

Not only double boarded but with OSB underneath, so you can just drive a Spax into the wall and it holds everything.

Exactly!