Various wall systems of houses, fastening capabilities, strength

When I read that, I immediately think: "That is exclusively something for an architect." A typical prefabricated house builder with their standard houses designed for flat plots would only get to place 157. It's roughly like wanting to buy a Humvee and asking VW, Fiat, and Peugeot.

But that's just a side note and not related to the specific question.

What do you want to fasten? That is the question.

Normally, simple drywall is designed for about 40kg per linear meter (with a 30cm projection). Double layered about 70kg.
In the bathroom area, fixtures are attached to corresponding elements. In the kitchen, as mentioned, you can work with OSB or something similar.

Conclusion: For all normal applications, normal drywall is sufficient, since 99% of the time you don’t have such heavy loads. The heaviest loads you find mostly in the kitchen or possibly with, for example, solid wood cupboards mounted suspended. But that is usually known beforehand.

Hey,

I have no idea where this statement from the first paragraph still comes from. We have already built two houses with smaller mid-sized companies from the area and it was always the same. They also take what they already had. And I don’t know any prefabricated house builder who doesn’t do it that way, at least not among the big ones. We have a floor plan in mind with which I went to Schwörerhaus, Bien-Zenker and Schwabenhaus. I said: The house may be max. 10.5 x 9 meters, should have at least 1.25m roof overhang all around and the upper floor must be completely clad in boards. Max. 1.35m knee wall for the sake of the look. With bedroom and bathroom with wooden balcony, plastered below. Small square windows below with muntins between the panes, open visible ceiling on the ground floor and finished is the "Alpine chalet" type. Oh yes, the woods not colored but natural or clear lacquered/glazed. All, really all, could offer that immediately on the spot, Schwörerhaus even with one of the “action houses” for really shockingly low money. And they have a very solid load-bearing wall outside as well as inside.
So I would never write in such forums that you have to plan an (I don’t even know exactly where that expression comes from) "architect’s house."
Speaking of architect: You need one anyway and all prefabricated house builders charge for it, mostly €5,000. You can always take your own, without that being any problem at all. So I absolutely don’t understand these statements and I am not planning a house for the first time, as already described.

What I want to fasten? That was not my question, because no matter what you want to fasten in 12mm thickness, it is insanely tight and you already need a cavity/drywall plug even for a slightly heavier picture. It was about to what extent the vapor barrier is damaged and whether such a wall even makes any sense.

By having, for example, an upgrade on certain walls in the form of an additional panel installed, i.e., for an additional cost. This is often done in the kitchen area, but also in bathrooms as standard, where where tiling is done, a second drywall panel is installed according to DIN.
Our solid house has the interior walls upstairs as drywall. There on site it is then discussed with the drywaller which wall should be reinforced, e.g., for hanging shelves. Elsewhere it makes no sense.

With a prefab house one should consider in advance whether one needs a reinforced wall or not. Costs extra, but that is basically the philosophy with house builders and standard houses: first cheap in the standard offer, everything else ordered on top for extra cost.

Thank you, very interesting. I explicitly asked the gentleman from Schwabenhaus about this, and he came up with 673 stressful attempts at justification instead of simply suggesting it to me. If that is available, he could have saved himself the long talk altogether. I will bring this up again, thanks very much for the tip.

Hello,

You want a house in Alpine chalet style. Why don’t you just build it like that? Massive stone below and massive wood above?

Best regards

I planned everything, I also obtained two offers from the companies that built our other two houses back then. Unfortunately, it’s just crazy expensive. I just don’t see the advantage of massive houses, especially combined with wood, nowadays anymore. The lower floor, turnkey prepared for the carpenter for further construction, including insulated basement: €360,000. And then the carpenter with roof and upper floor on top of that... it’s not worth it to me, goes much easier with timber frame.

Hello,

The question about fastening in prefab houses with classic wall construction that only provides drywall on both sides is very valid. The crucial point is that drywall partitions with mere drywall sheathing have constructively limited load capacities – regardless of what sales arguments suggest. Without built-in wood-based panels behind the drywall, the possibilities are actually very limited, since drilling in cavity anchors usually perforates the vapor barrier. Technically, systems with additional OSB/composite panels or Knauf hardboard on the interior are clearly superior: load capacity, flexibility and the protection of the airtight layer are more convincingly solved in practice there.

OK, then my thought was absolutely correct. I’m always very puzzled by such things, especially because I can’t imagine that the market doesn’t regulate itself here. Or do so many house builders just not care about these absolutely essential things? I can’t see it otherwise, because I notice it. If these houses, mostly also much less solidly executed in timber frame, were cheaper, I wouldn’t say anything. But less performance for the same money? Sometimes the market is really interesting in various sectors.

Just again, if it is interesting to anyone, the concepts that already existed as proposals before our planning at Bien-Zenker and Tiroler Holzhaus. More or less like in the pictures, that’s how it will be. Of course, these were only the proposals alongside our own floor plan, individualized for us.

By, for example, having an upgrade installed on certain walls in the form of an additional panel, i.e. at an extra cost. This is often done in the kitchen area, but also in bathrooms as standard, where a second drywall panel according to DIN is installed where tiling is done.
Our solid house has drywall interior walls on the upper floor. There it is discussed on site with the drywall installer which wall should be reinforced, e.g. for hanging shelves. It makes no sense elsewhere.

With a prefab house, you should think in advance whether you need a reinforced wall or not. It costs extra, but for people building small houses and model houses this is basically the philosophy: first cheap in the standard offer, everything else is ordered on top at extra cost.

Thanks a lot, highly interesting. I even explicitly brought this up with the gentleman from Schwabenhaus, but he came with 673 stressful attempts to justify instead of simply proposing this to me. If that exists, he could have saved all his long talk. I will bring it up again, many thanks for the tip.

Hello,

you want a house in the Alpine chalet style. So why don’t you build it like that? Stone solid at the bottom and solid wood on top?

Best regards

Hi.

I planned everything, I also got two offers from the companies that built our other two houses back then. Unfortunately, the price is insane. I just don’t see the advantage of solid houses, especially combined with wood, nowadays anymore. The lower floor, turnkey for the carpenter to continue building, incl. insulated basement, prepared: 360,000. And then the carpenter comes with the roof and the upper floor on top of that... it’s not worth it for me, it’s much easier with timber frame.

Hello,

The question regarding fastening in prefab houses with classic wall construction, which only provides drywall on both sides, is very justified. The crucial point is that a drywall wall with just gypsum board cladding has constructively limited load-bearing capacities – regardless of what sales arguments suggest. Without built-in wood-based panels behind the gypsum, the possibilities are indeed very limited, since even when drilling for cavity anchors the vapor barrier is often perforated. Technically, systems with additional OSB/compound panel or Knauf hardboard on the interior are clearly advantageous: load capacity, flexibility, and protection of the airtight layer are more convincingly solved in practice there.

Hi.

OK, then my thought was probably absolutely correct. I am always extremely puzzled by such things, especially because I can’t imagine the market not correcting itself here. Or do so many homebuilders really not deal with these absolutely essential things? I can’t see it any other way since I notice it myself. If these houses, mostly with much less massive timber frame construction, were cheaper, I wouldn’t say anything. But less performance for the same money? Sometimes the market in various areas is really interesting :)

Just again, in case it’s interesting for someone, the concepts already available as suggestions before our planning at Bien-Zenker and Tiroler Holzhaus. It will be roughly like in the pictures. Of course, these were only the suggestions, together with our own layout, which were individualized for us.

Hello,

you want a house in Alpine chalet style. So why don’t you build it like that? Stone solid below and solid wood above?

Best regards

Hi.

I have planned everything, and I also obtained two quotes from the companies that built our other two houses back then. Unfortunately, the price is crazy. I simply don’t see the advantage of solid houses, especially combined with wood, in today’s times anymore. The lower floor, turnkey for the carpenter to continue building, including insulated basement, prepared: 360,000. And then the carpenter adds the roof and the upper floor... it’s not worth it to me, it’s much easier with timber frame.

Hello,

The question about fastening in prefabricated houses with a classic wall structure, which only provides gypsum board on both sides, is very justified. The crucial point is that a drywall with mere gypsum board cladding has structurally limited load capacities – regardless of what sales arguments may suggest. Without built-in wood-based panels behind the gypsum, the possibilities are indeed very limited, since the vapor barrier is usually perforated when drilling for cavity anchors. Technically, systems with additional OSB/composite panels or Knauf hardboard on the interior are clearly advantageous: load capacity, flexibility, and protection of the airtight layer are convincingly solved in practice there.

Hi.

OK, then my thought was probably absolutely correct. I’m always extremely puzzled by such things, especially because I can’t imagine that the market wouldn’t correct itself. Or are so many homeowners really not concerned with these absolutely essential matters? I just can’t imagine it otherwise, since it does catch my attention. If these houses, often with much less solid timber framing, were cheaper, I wouldn’t say anything. But less performance for the same money? Sometimes the market in various areas is really interesting :)

Just once more, in case it is interesting for someone, the concepts that were already available as proposals before our planning at Bien-Zenker and Tiroler Holzhaus. More or less like in the pictures, that’s how the whole thing will be. Of course, these were only the proposals together with our own floor plan, which were customized for us.

I even explicitly addressed that, he came with 673 stressful attempts at justification instead of simply proposing that to me.

I think the problem lies with the owner-builder, that is, the concept behind the Klima-xy wall itself. You base your selection on a certain type, for example the xy variant or the yy variant from Schwabenhaus, and commit yourself to it. And this is also what is meant by the architect house: those who want standard are well served with the concepts of owner-builders like Schwabenhaus and co, those who want "more," especially in the substance, should build "freely," that is, with free choice of trades and walls.