“In April, Concrete Construction magazine published the article “Why Three Pounds?” that questions why the flooring industry ever abided by what it calls a “one size fits all” standard for evaluating concrete slab moisture. According to the article, “The literature from many flooring installers and manufacturers states that installation of glued-on flooring cannot begin, and warranties on flooring materials will not be honored, if MVER [moisture vapor emission rates] results are greater than 3.0 pounds/1000 square feet/24 hours (abbreviated in this article as simply 3 pounds); some manufacturers today have increased that to 5 pounds. It is not clear if this value refers to the results of any single test, of all tests, or the average of all tests required by ASTM F 1869 to be performed on the slab simultaneously.” So is the three-pound requirement as arbitrary as the authors of the article suggest?…”
Read more about concrete moisture testing practices below!
“Acceptable Concrete Moisture- July 2013”