Gypsum plaster on chipboard?

[tralopp]

Is it possible to plaster with gypsum plaster on chipboard?

 

[nimhed]

Why do you want to do that?

 

[tralopp]

I want roughly plastered interior walls and have now taken down the wallpaper. However, I became uncertain when I saw that there was particle board under the wallpaper. Drywall shouldn't be a problem, but I became very unsure about how it works on particle board.

 

[nimhed]

Can't you also remove the chipboard, or first plaster and finish on it?

 

[tralopp]

Hmm.. but this applies to a fairly small hallway.. Where it turned out that 3 out of four walls were almost completely new chipboard with only one layer of wallpaper on them.. So it feels like if it's not possible to plaster the chipboard, I'll probably put up wallpaper instead. I might then paint it with paint that has those granules in it - as a sort of compromise.

It feels a bit too wasteful to remove such nice chipboard and I'd rather not make the hallway smaller than it is with drywall on top of them. Also, the doors and door frames are original - meaning very old - and I think I'll have some trouble fitting them again (I'm just a happy amateur) if I put drywall on top of the existing walls...

 

[nimhed]

I wouldn't have dared to polish directly on spån, but on the other hand, I've never tried it.

Good luck!

 

[meckis]

I don't think there is a problem with getting the gypsum plaster to adhere, but there is a risk that the joints between the boards will crack, as chipboard is a living material that expands/contracts with different moisture levels.

 

[tralopp]

A thousand thanks for your answers! Yes, it seems like I probably have to choose to wallpaper after all. It's an old house, so it already has quite a bit of movement, and I guess a plastered wall that doesn't turn out well is harder to fix afterwards than a wallpapered one. So unfortunately it will probably have to be wallpaper. The gypsum plaster is supposed to withstand some movement, but I probably don't dare to take the chance. If only I knew that someone had already done it and gotten a good result, it would have been a different story!

 

[Tjenko]

It works well, I did it to straighten a crooked wall and plan to put a gypsum board on top in the next step. However, as mentioned, it cracks if the chipboard moves, so just using gypsum plaster on chipboard is probably not a sustainable solution.