If the temperature of the slab is too close to Dewpoint (it should be at least 10 degrees F above) the upper portion of the concrete can become saturated with the moisture that moved from the warmer air to the cooler concrete slab.
Steve Phillips — Mast Partners, LLC, Flooring Consultant, talks about how he uses the Tramex ME5 for finding moisture on a variety of floor covering products and mentions how this meter is also used on other building materials.
This Video demonstrates the Moisture Mapping feature of the Tramex Meters App & shows how to report results with a variety of output options.
In laboratory measurements of the concrete moisture content by the NDT-method the Tramex Concrete Moisture Encounter gave results which were best comparable with the results of the oven drying method.
The VTT Technical Research Centre of Finland Ltd
Ambient Conditions are important and often overlooked when measuring the moisture conditions of a concrete slab to check if it is dry enough to accept a floor covering or coating.
Watch Andrew Rynhart giving an up-to-date understanding of the relationship between moisture and concrete, and the ambient conditions that greatly influence that relationship. He explains the best test method to get a clear picture of the moisture condition of a concrete slab and to determine if it's ready to receive a floor covering or coating.