What is STO plaster?

[Sweli]

I can show with pictures how we did it.
The hive came ready with outdoor gypsum. Then you build the battens and on that, you screw BluClad (formerly known as Masterfacade). There should be an air gap between the board and the gypsum.

For a description of how to plaster on BluClad, I will send you an email.




We haven't plastered yet. The reason for this is that we are developing a new method, instead of plaster, but which still looks like plaster for application on these boards that is easier and cheaper.

 

[Sweli]

Sweli>Can you describe the construction of the wall? Please email me some info as well... sounds really interesting.
snickarboden@hotmail.com

/Kent

Hi Kent,
The two emails I sent you failed to deliver.
Your mailbox is full.

So that anyone who wants can retrieve the information, I've placed it here:
Independent Certification Body in England for construction in Europe:
http://www.brecertification.co.uk/pdf/Cert_57_(Nov_99).pdf

Ljunberg Facade Brochure:
[urlhttp://www.ljungberg.se/webb/Fotogalleri.nsf/LookupFiles/fasad_lu/$file/fasad_lu.pdf[/url]

Note: this board is now called BluClad:
http://www.ljungberg.se/webb/Fotogalleri.nsf/LookupFiles/masterf/$file/masterf.pdf

 

[Framerate]

I can tell that you haven't read by your comments, for example when you say "silent boards as the only base," in a previous comment you say "but it naturally requires expansion joints," which is completely wrong.

First of all, you should absolutely NOT have these boards as the only base. The manufacturer explicitly states this in their description. As you can read in my posts, it says it's a JOINT-FREE construction.

You are wrong. I have come across the method before and read about it, however, it was a while ago, and I never became particularly interested because I didn't think it felt like a good method for a wooden house, which lives under the rigid shell.

I've skimmed through the material again now and am still not convinced. As I interpret it, you should have an expansion joint after a maximum of 6 m, but not in the plaster, and that seems odd to me. It would be interesting to see an example in a Nordic climate that is ten years old.

(However, I can't bring myself to read every detail thoroughly, so I might have missed something, but instead of arguing that one is not informed, explain it, that's what a forum is for!!)

 

[MrMagic]

Without being an expert in any way, any rigid mtrl, regardless of which, should move as much as the surface it is attached to, i.e., the panels should move relative to each other. Otherwise, the fastenings will break/loosen, compare it to an aluminum roof nailed to a wooden surface, after a while the holes are much larger in the metal due to movements. (OK, a bit extreme comparison, but still...)
But aren't we a bit OffTopic now?

 

[Framerate]

Without being an expert in any way, some rigid material, regardless of which, should move as much as the surface it's attached to, i.e., the panels should move relative to each other. Otherwise, the fastenings will break/loosen, similar to an aluminum roof nailed on a wooden surface; after a while, the holes become much larger in the metal due to movements. (OK, a bit of an extreme comparison, but still...)
But aren't we a bit OffTopic now?

Yes, that's what I'm getting at, and then the stresses on the thin plaster over the joints between the panels would become enormous if it's a wooden house being encapsulated. Especially if "the cement-based plaster becomes one with the cement-based panel," as Sweli writes. Then the plaster over the joint between the panels must take the entire load when the wooden frame strains. There must be somewhere it can move! Maybe the fastenings for the panels are flexible enough to absorb the movement...?

Tricky.

But, as I said, I "doubt" the method, which doesn't mean I'm convinced that it doesn't work or that it works. When I think about it, I doubt most things when it comes to houses. I might be getting paranoid. Help!

 

[MatildaSofia]

Imagine that things heated up on the STO-puts thread..
Interesting reading you provided!

I'm probably getting paranoid. Help!

Take it easy, you're not alone...

 

[kibba]

Agree with MatildaSofia, it's amazing how interesting plaster can be... always fun to see where the threads lead. "The Lord’s (and the forum's) ways are mysterious," but on the other hand, you get a bunch of tips you never dreamed of before the thread started.

Still not clear on the original question:

Please enlighten an uninformed person: advantages/disadvantages, what to consider, potential price differences (which should be visible in the two quotes), what are your experiences?

. But maybe it will come...?

Thanks and talk to you later / Kibba

 

[Framerate]

The question is whether it is positive or negative that there are more paranoid people out there?

Regarding advantages and disadvantages, the answer is simple:

Regardless of which facade you choose, the disadvantages outweigh the advantages.