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old stains on plaster

Posted: Tue Jul 03, 2007 9:34 pm
by Digby
Having stripped the walls of 1940's house I have found stains/mould marks on the plaster. The marks appear to form the pattern of previous wall-papers. What should I do to seal the plaster before applying emulsion?

Posted: Wed Jul 04, 2007 8:17 am
by thedoctor
See our project on blocking water stains Digby, the same product should do the trick.