Cellular plastic as the main material?

[foxmulder]

Does anyone have experience or opinions on the method of using 250 mm cellular plastic (EPS) with milled-in wooden studs as the main building material? According to a supplier, it should be easy to build with and have very good insulation properties. Any input would be valuable, as I understand that you really have to think about absolutely EVERYTHING when building a house.

 

[andersmc]

I have seen examples of how entire houses have been built with Styrofoam, and it seems to work well. But I would never want to live in a house made of Styrofoam, considering how well it burns.

 

[foxmulder]

Thanks for the input. I have asked about the fire risk and their construction has been tested at SP. With double gypsum, it should take 40 minutes for the fire to reach the cellplast, and by then it would have melted from the heat anyway. Does anyone know anything about the sound insulation properties?

 

[anaitis]

Foam plastic does not soundproof at all. Gypsum, especially in double layers, on the other hand, is quite decent.

 

[Norell]

Dalacement has many structures set up in the country, I have helped install a handful and it was then single plasterboard on the walls and double plasterboard on the ceiling (3 floors).

The soundproofing properties outwardly are probably good as the concrete in the outer layer is 65mm, inside you choose yourself if you want single or double plasterboard and with/without insulation in the partition walls.

http://www.dalacement.se/concell.pdf

 

[anaitis]

Dalacement has many structures set up in the country, I have helped to install a handful and it was then single plasterboard in the wall and double plasterboard in the ceiling (3 floors).

The sound insulation properties outward are probably good as the concrete in the outer layer is 65mm, inside you choose yourself if you want single or double plasterboard and with/without insulation in the light walls.

[link]

Don't really think that's the system he was wondering about.

 

[Norell]

So which system do you think he meant then?

 

[anaitis]

So which system do you think he meant then?

I have forgotten the name, but there are systems with blocks of cellplast that you stack on each other. Similar to Lego, but larger. But without those studs on the top.

 

[Norell]

OK, maybe someone will come up with the name eventually... preferably with a link so one can read a bit about the system.

 

[anaitis]

I found the system I had in mind.
http://www.besta.se/
But now I see that it's not quite as the questioner describes with notched battens.
The memory...

 

[foxmulder]

What we are trying to evaluate is a pure EPS panel of 250-300 mm with milled studs to prevent thermal bridges. It sounds good, but actual, unbiased experience is invaluable. Here is the link to the company I am looking at:

http://www.foamsystem.se/

 

[anaitis]

There you go!
Yet another new technology.

I dare not comment on its properties.

 

[JanneL]

If you want recessed studs, I would rather choose Dorotherm.
http://www.dorocell.se/eway/default...43:0:&Content_6043=6048:17112::0:6111:1:::0:0
The advantage, as I see it, is that you get a heavy frame because you cast in the "blocks" and thereby also get better sound insulation.
Building entirely with Styrofoam with wood or metal studs can certainly be convenient and cheap when ground conditions do not allow for heavier constructions without costly groundwork. But, as andersmc points out, the fire risk. It goes fast too. There's a thread about this.

 

[foxmulder]

Great info, I'll check out Dorotherm.!

 

[hdm]

foxmulder, you who live in the Stockholm area might want to go to the Älvsjö fair on October 9-12, Foamsystem will be there then, maybe you can get some more info.
I have looked at FoamSystem myself and think the concept seems interesting.