Even the most carefully poured flooring can have unacceptable rates of moisture emission from epoxy floor coatings, which can undermine the integrity of existing floor coatings or make it impossible to install new epoxy flooring that will withstand the moisture levels.
What are the steps I should take before moving ahead with installation of an epoxy coating?The most important and prudent measure to take before installing a floor coating system is to take a measurement of the moisture vapor emission rate (MVER).
How do I measure the amount of moisture vapor emission from epoxy floor coatings coming from my concrete flooring?The two main tests to determine the MVER are the calcium chloride test and the relative humidity test.
- The first method involves the placement of pre-weighed calcium chloride containers sealed with plastic coverings at 1,000 square-foot intervals. The calcium chloride crystals in the container are weighed again after 72 hours to determine the amount of moisture that has been absorbed.
- The second method requires drilling holes in the substrate and inserting probes to measure the levels of moisture below the surface of the flooring. This second method is perhaps the better of the two and provides a more accurate assessment of the true level of moisture at a deeper level.