Reduce The Risk of Flooring Problems By Concrete Moisture Testing

Learn the science behind relative humidity in concrete and why the state-of-the-art Rapid RH® probe is a cost-effective, critical tool for flooring projects. Veteran concrete construction and flooring industry specialists Howard Kanare, Peter Craig, and Ray Thompson weigh in on the benefits of RH testing. Together, these top experts have more than 100 years of experience you can trust.

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Last updated on August 31st, 2021


  1. Sam says:

    This is such an important topic for any budding concreting company. Too many times have we seen this happen. Need to have trained professionals perform this!

  2. James R Mooney says:

    I had LVP put down in my house and the high moisture passing thru the concrete is cause moisture to make the adhesive seep thru the seams in a few spots. I had two plumbers check for leaks of city water or sewage line and they didn’t find any issues. I’m trying to figure out what type of flooring might be most tolerant of high moisture and/or what kind of topside vapor barrier I might use. Any help would be appreciated. By the way, the LVP manufacturer says that the %RH should have been measured before putting the floor down.

    • Jason Spangler says:


      Thanks for the question. Yes, it would have been best to identify the moisture issue prior to installing the floor so you could have possibly made some changes to the flooring system being installed. There are less moisture sensitive flooring products (usually more breathable). My concern with them is that in most cases you will be putting furniture and other things on top of the breathable floor that make it much less breathable, so you are probably better off trying to address the moisture and install the type of floor you really want. Picking a “topside” vapor barrier really depends on how bad the problem is, so measuring the RH% is still something that should be done. Once you have these moisture numbers then look to companies such as Ardex, Mapei, Sika, Uzin, AC Tech, and Halex (to name a few) for your solutions. Good luck.

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