Problem with using PVA is you may well end up with it on or just below the plaster surface which will play havoc with your paint finish. Blending in is possible for the experienced but, if not, your better off without the PVA & just using a water mist spray to control the suction (but don’t overdo it), then use a little filler & light sanding once it’s gone off.PVA the overlap of section you have just done to about 1.5 roller widths at least. else when you try to blend the section you have done will suck all the moisture out of the new plaster and it wont want to go thin.
Richard C";p="1647584 said:Problem with using PVA is you may well end up with it on or just below the plaster surface which will play havoc with your paint finish. Blending in is possible for the experienced but, if not, your better off without the PVA & just using a water mist spray to control the suction (but don’t overdo it), then use a little filler & light sanding once it’s gone off.
As Richard says, wet the joint and blend in.
Instead of using a stop bead, use a length of scrim/fibatape. Plaster half or so on to this, then after the second rub, peel it off to give you a nice straight joint , at the right thickness.
Always more than one way to skin a cat
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