by brickpat »
Tue Apr 21, 2009 8:04 pm
[quote="brickpat"][quote="bibien"]Can anyone advise me about the sudden appearance of the outline of cavity blocks on my interior lounge walls. The outlines look like shadows on the walls and are dusty grey.
I want to redecorate and do not know what to do to ensure this problem does not happen again.
Advise would be very much appreciated.
Regards
Bibien[/quote]you don't say how the wall's are plastered,sand & cement & finish coat or carlite bonding & finish coat,what ever if you put 2 coat's of pva
diluted, 3 part's water,1 part pva and allow to dry between coat's that will hold it back. good luck[/quote][quote][the outline of the block's on your wall are the morter bed's and cross joint's,bibian the "pva"is white in colour in the can,when applied to the wall it dries clear,also why don't you line your wall's with lining paper,that will be a belt and braces job you can't go wrong .drink up