plastering onto sealed chipboard - can I do it?

[Corrado]

Hi all

We have a stud wall that is made from chipboard, which has been painted.
The chipboard has also been PVA'd - and we want to have the wall skimmed.

Because the chipboard has been sealed, can we do this?

Regards
Nick

 

[Third_Eye]

Problem here is with movement between boards, as they are chipboard. Plaster will stick provided PVA is used but it will crack at the jionts.

 

[Corrado]

even if you use plasterboard tape?

Should I remove the chipboard and install plasterboard instead?

 

[jbonding]

even if you use plasterboard tape?

Should I remove the chipboard and install plasterboard instead?

Yes.

can you board over the top?

 

[Corrado]

perhaps... What is the thinnest plasterboard available? Can you get 4 or 6mm?

Will taping the joints not remedy this?

 

[noseall]

9.5mm is the thinnest plasterboard available.

why not remove the chipboard and fix plasterboards instead?

 

[jbonding]

perhaps... What is the thinnest plasterboard available? Can you get 4 or 6mm?

Will taping the joints not remedy this?

this is available

 

[Corrado]

I think I may well remove the chipboard as suggested.

So just to be 100% sure, even if the joints are taped, they will still crack once plastered onto chipboard, but not if on plasterboard?

 

[Third_Eye]

I know for a fact that the chipboard jionts will crack even when taped up. Talking from expereince ofcoarse.

 

[Corrado]

Okay, then - I will plasterboard directly on top of the chipboard.

Thanks everyone!