Hardwall query

[Rapporman]

I am filling in an area of old brickwork which was exposed when I removed some wall tiles. The hardwall bag specifically states not to use PVA which is fair enough for the brickwork which I will damp down first but what about the edges of the existing lime plaster which I am levelling up to. The old lime plaster is very dusty and liable to disintegrate, so will pva be necessary on the edges or will water do? I will be having the walls skimmed afterwards.

 

[PrenticeBoyofDerry]

I'd personally remove all the old plaster, as it sounds like it is ready to fail on you anyway, and do the whole wall.

 

[Rapporman]

Many thanks PrenticeboyofDerry but the remaining plaster walls are not so bad they need renewing and will take a skim coat. Its just that I wasn't sure whether pva'ing the edges would have any adverse effect on the hardwall ?

 

[PrenticeBoyofDerry]

It shouldn't effect the hardwall, but you don't want to apply next to an area that dry and crumbling.
You can apply a coat of PVA to edge of exsisting plaster, should not be a concern.