efflorescence on a dry wall

by **scratch58** » Wed Jan 16, 2013 11:30 am

I have efflorescence or salt deposits on an internal wall that is built with hollow core terra cotta bricks. i have knocked a hole into the wall and its dry, so why do i have these deposits on the plaster???? and how do i treat it?

by **stoneyboy** » Sat Jan 19, 2013 2:20 pm

scratch58,
It's probably just the wall drying out and bringing salts to the surface. Clean off the salts and apply an alkali resisting primer.
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