Moisture permeation through concrete slabs can cause installation failures with all types of flooring. In the early 2000s, the Rubber Association determined that moisture levels, tested per test method ASTM F-1869–exceeding 3 pounds per 1000 square feet per 24-hour period caused serious problems, such as delamination, adhesive breakdown, and adhesive oozing. High moisture can also foster bacteria and molds, causing foul odors, and contributing to sick building syndrome.
The industry standard test methods for moisture permeation and relative humidity in concrete are the ASTM F-1869 calcium chloride test – and ASTM F2170.These tests are simple and the equipment and materials readily available. For the reasons stated above, high readings must not be ignored.
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