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May 2 - May 8, 2016

How do I permanently get rid of efflorescence on clay brick?

Selected Answers

From Tom Schwerdt of Texas Department of Transportation on May 5, 2016:
Trevor is right. You have to stop the process which is causing the efflorescence or obscure it. If you simply remove it, that's just a short term solution.

From trevor neale of TF Warren Group on May 4, 2016:
The perfect answer is to find the moisture source that creates the problem. Until that is located and remedied, any other treatment will be short-lived. If that is impossible, then covering the surface with a false wall with air space behind will provide an aesthetic solution to the problem. These comments come from working in an area of the world where the problem was severe and common; and trust me, we tried all the other known methods to overcome the problem.

From Paul Hahn of Paul Hahn Painting, LLC. on May 4, 2016:
After scraping with a wire brush, I'd use Dumond's efflorescence remover:

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