Thinnest attefall wall, e.g. with PU foam

[utbygget]

What is the thinnest wall (within reasonable price limits) one can make on an Attefall?
I'm toying with the idea of having a concrete slab on the outside that can be plastered, a metal stud frame with intermediate PU foam.
It must be possible to make an intermediate floor for a loft.
What layers do you have inside the foam?
Can you hang pictures afterward?

 

[henke_benke]

What is the thinnest wall (within reasonable price limits) you can make on an Attefall?
I am toying with the idea of having a concrete slab on the outside that can be plastered, with a steel frame and intermediate PU foam.
There must be a possibility to create a mezzanine floor for a loft.
What layer do you have inside the foam?
Can you hang up pictures later?

What kind of roof will you have?
Which county do you live in?

 

[utbygget]

what kind of roof are you going to have?
which county do you live in?

The roof should be as flat as possible since the maximum height is 4 and you need a loft to be able to sleep, as the 25 m2 at the bottom will likely be used for the kitchen/hall/shower.
The house will be in Stockholm, but since I believe in more extreme weather ahead, it should preferably be designed for lots of snow load (or be easy to shovel, i.e., nothing protruding and have a roof covering that can withstand shoveling).

 

[Rabbithole]

A sandwich construction with sheet metal and foam should provide the thinnest construction for both walls and roof.

Vacuum insulation is the thinnest that insulates well. Check, for example, kingspan optim r

There are also proposals to extend the attefallshus to 30m2, but I haven't heard if it's in a definitive stage.