Dealing with a concrete sub floor means that installers need to figure out how to control the moisture that will inevitably be a part of the job. There are definitely a few things that flooring installers should know about water vapor emissions on a concrete sub floor.
People without experience in dealing with concrete sub floors may overlook or inadequately prepare for moisture, especially water vapor emissions. Even professionals struggle with installing flooring on concrete, especially glue-down options. While the flooring material itself has even improved over time to stop or slow the off gassing of moisture vapor from concrete, it is still a problem for even the most experienced installing crews.
Too much moisture can wreak havoc on flooring material that is set over the sub floor, causing warping, swelling and even moisture damage and mold. Adhesives can lose their hold and cause planks and tiles to curl and bubble. Even after several years of installation with no problems, water vapor emissions can suddenly start to cause a problem.
The best way to deal with water vapor emissions on a concrete sub floor is to carefully test for moisture before installation to get a good idea of the conditions in a variety of settings. Letting the concrete cure for the appropriate time is another good way of reducing the risk. Of course, an appropriate moisture barrier needs to be utilized as well.
When all the right steps are taken to address water vapor emissions on a concrete sub floor, the flooring will have a reduced risk of seeing problems with moisture.