cait

For what it's worth dj, I would say that the problem is that he has pva'd the walls that were painted.

And probably without preparing the walls, like sanding down.

PVA don't like paint. Sounds like it isn't stuck to the paint.


I, too, would be interested to hear a more experienced view.




Mr. Handyandy - really

 

DJ, I think this is a plaster problem but it's a bit of a confusing Q...I'm not sure what he's doing. My guess is that the lime plaster doesn't like the PVA. Lime plaster breaths. This is a guess though. I used to occassionally teach at the Scottish Lime centre and know that lime plaster needs quite a different approach. It's a shame he's changed it from lime plaster IMHO.
I think that this would be better answered by a plasterer trained in traditional building techniques...where to find one, I don't know.
Cait

 

Had another thought, maybe post this on the DIYnot forum, there's a guy there called Zampa - in the decorating forum....very knowledgeable...he might have more of an idea.
Cait

 

dj, sorry I had no idea what you did..not meant in a derogatory way. I kind of meant someone who specialises in lime plaster and it's resoration. I know what you mean about DIYnot...deleting happy mods, whew, doesn't make you want to stay there too long, but Zampa knows his stuff.
There's a few guys that posts to Muralsplus Message forum that would probably know - Paul Marlow from Ireland for one, but they really specialise in polished plasters, scag, marmorino etc. - M+ is a US forum for specialist finishers but there are a few folk there that really know their plasters and work lime all the time, might be worth a visit, but bear in mind they don't use PVA over there. There's the Plasterarc forum too.

That's about all I can suggest. Cait