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September 6 - September 12, 2015

How can it be determined if moisture within a CMU wall is causing repeated coating failure? If so, can the source of moisture entry be accurately identified for correction?


Selected Answers

From Michael Quaranta of OPERATIONS 40 on September 14, 2015:
First element is to learn where the CMU wall is built. Is the wall underground? Is it part of a building foundation, and, if so, what's in that room area of the basement that might account for part of the moisture problem. Then the second part is to consider the entire five moisture specifications issued by ASTM. Certainly, one of those specifications will provide an answer. Third, chose the right coating in the first place. This is not something new for wall coatings with moisture problems.

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Tagged categories: Coating failure; Concrete masonry units (CMU); Good Technical Practice


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