Stairwell cold spots

Postby denboy09 » Sat Oct 02, 2010 6:17 am

Recently had my stairwell re-plastered and have a strange occurrence. When the air is damp, dark patches appear on the wall around 6ft up so i dont think its rising damp. Neighbour say its most likely something called "cold spots ". What are they? Can i emulsion over them? :(
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Simply Build It

Postby JRS » Sat Oct 02, 2010 9:32 pm

Should be fine to paint over, try to get some heat in the area to make sure its completely dry tho.
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