Preparing set hard wall for skim coat

[MitchMitchell]

I've plastered a wall with hard wall and let it dry (2 days) and I'm wondering if I need to PVA it to stop the suction before putting the skim coat on?

I've now read up and seen you should do the undercoat and skim same day, but unfortunately this is an evening project for me so didn't have the hours to get it all done.

Cheers for your advice.

 

[roughcaster]

Yes you will need to pva the wall to seal it, i'd even put 2 separate coats on, one now, then one a few hours later,, just to make sure the suction's gone.
Once you've sealed it, let it dry, then "pva it again", but this time, "skim onto it right away" while the pva is still wet/tacky.
As you said, you would normally coat and skim the same day,, much easier to do , but sometimes things don't always work out that way.

 

[MitchMitchell]

That's great! Cheers for the advice Roughcaster, much appreciated.

 

[roughcaster]

Well done you for having a go Mitch.