Hello!
In our energy house from 1981 made by Nordiska Termohus in Jönköping AB, the walls and ceiling are made of something they call
Multiblock. There isn't much information about this type of interior wall/ceiling, and they refer in drawings to "See multielements principle details," but I can't find anything like that.
The walls and ceiling have drywall with foam fill (PU?), so it's like a solid block. I can't find studs in them when knocking since everything sounds the same, but there must be some, I assume, or have they been able to skip them because it is a solid wall?
It's a bit tricky when you start running electricity, pipes, etc., as you can't get into the walls without having to mill grooves. Also, attaching heavier things becomes a challenge since you can't use plugs that expand behind the drywall.
Does anyone know more about this type of wall/ceiling?
I think this company has taken over or is making a similar construction.
http://thermohus.net
The building system is based on a Thermobalk® built around a highly insulating foam plastic core containing 98% air. The core is surrounded by a high-quality wood panel and a stiffening system that makes each Thermobalk® a self-supporting truss-type building block.
While the Thermobalk® is self-supporting up to over 6 meters, it weighs no more than 25 kg. This means you can design a house entirely to your taste without having to consider ceiling heights (trusses are generally not needed), floor joists, and other limitations that a traditional building method provides.