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How to fix flaking paint and white powder on newly painted plaster?
Last year a blocked gutter resulted in damaged plaster on an outside wall in a mid terraced 60 year old property in an upstairs bedroom.
The gutter was cleared.All plaster was removed from the entire wall and it was replastered by a tradesman.
I let the wall dry for three weeks and repainted with emulsion ( 3 coats).In the last few weeks a bit of flaking has occurred, but also a white powder had appeared in patches. The wall is apparently dry, the powder brushes off easily. I cleared it all off, repainted, but within 3 weeks the growth has re-appreared.
a previous question reply mentions "efflorescent salts.
The wall is not damp.Is there something on the market that I can use to "seal" the already painted wall? what would happen if I wallpapered over it?
Hi you could try and pva the wall to seal it then repaint I would not wall paper over it as the wall paper will come off hope this helps
Answered 21st Jan 2013
Hi you need to sand the wall down to the plaster then you need to put some Pva glue on the plaster two coats .
Leave to dry and then repaint ,this will solve the problem .
Answered 20th Jan 2013