Damp stains showing through new paint

jdpl28

Hi,

I'm painting a ceiling with some old damp stains on it, but no matter how many coats of paint I put on it, the stain always seems to show through (I've put on 4 coats so far). Any suggestions? Does it mean the damp is still coming through? It doesn't feel damp at all. Is there a special kind of paint I should be using?

thanks,
J

Hal1

You could probably use a primer to act as an undercoat. Its more dense than emulsion and should provide you with a good base and prevent stains getting through. I had the same trouble with a bathroom ceiling.

GreeBo

or there is special paint for blocking out stains

byte

Some primer sealer will do the trick.

Reyman

Greebo's right - there is a special paint for permanently covering damp stains.
The name escapes me at present!

byte

Aquaseal Stain Block?

There are a few it seems, called stain block

eoghan.geraghty

At the risk of asking the obvious, have you sorted out the cause of the damp?

jdpl28

eoghan.geraghty wrote:

At the risk of asking the obvious, have you sorted out the cause of the damp?

as far as I know, there's no damp currently. Just damp stains from a previous leak. I'll look more into this just to be sure though.