Are theses damp spots in my new plaster

[Rsian]

Hi all, can someone tell me if these are damp spots or not.

Plaster is two weeks old, rest of room dried out between 4 - 9 days and has none of these marks anywhere else.

Untitled

• Rsian
• 6 Jan 2012
• 1

It is a brick wall (adjoining neighbour), no pipes I know of immediately above it.

The spots haven't changed colour, the same after the plaster dries out around them.

Thanks.

 

[peaps]

Hard to tell but it looks like PVA stains.

 

[Rsian]

If its pva, is this coming from the back - would sandimg aid in paint adhesion?

 

[ImperialCompleteSolutions]

It is hard to tell from picture but from the description given I doubt if it is damp it looks like something was on the wall before over skimming and has sucked through the skim whilst drying. Giving it a light rub down wont harm and may help adhesion of paint its a case of trial and error

 

[roy c]

It looks like grease stains or could be white spirits have you used any white spirits or oil or the like that may have splashed on to the wall?

 

[darrington]

Hard to tell but it looks like PVA stains.

. You've got PVA on the brain!!

I'd go along with ICS's & RoyC's suggestions.