When laying hardwood flooring over concrete such as a basement or even ongrade, moisture content in the concrete should

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always be tested.
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  • Dry lock is best applied to concrete walls and not floors. The mfg will confirm this..
  • Bullseye, Over 3 lbs of MVP is too much for these floors. I use a moisture meter for wood which can give the first indication of moisture in the concrete. If it is high, I run a full calcium chloride test to determine the depth of the moisture buildup. There are products available to the professional to mitigate moisture out of floor surfaces. Dry lock and others are not for floor applications. We can mitigate up to 25lbs of MVP down to 3 lbs or less.
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