I have had some painting done on (old) bare plaster that was previously wallpapered. It was not prepared in any way apart from filling/sanding dents. The paint used was a silk. :(
I now want to paint/wallpaper over.
If I wallpaper, do I just size with paste, then paper over?
If I paint, should I seal with a quality sealer / PVA first, or just go over it with new paint?
Thanks in advance!