When you work to avoid wood floor moisture, there are several layers that could contribute to the moisture problems as what discussed as well by Todd Shupe LSU. In an effort to correctly install the wood flooring products, there are many steps that have to be done successfully as acclimating and installing the flooring product wouldn’t cut.
For wood floor that’s installed over concrete slab whether it includes separate subfloor or not, the moisture picture in concrete slab could bring ramifications for finished flooring. If the new slab hasn’t been dried completely to finished specifications, that moisture will keep wicking up through the concrete’s surface and may cause anything from adhesive failure to cupping or wood warping.
Todd Shupe LSU also said that if old slab begins to develop either moist patches or cracks, it’s more than enough to work its way up to the surface and provide a way for moisture to compromise wood flooring. Even with usual vapor barrier, still moisture could be a problem if ever the slab hasn’t dried properly. For this reason, it pays to understand the importance of wood floor moisture testing on concrete.
Concrete moisture conditions are reliable with relative humidity testing that is using situ problems. Other test methods consist of poly film test or calcium chloride testing which is somewhat problematic in the past and thus, discontinued gradually by various organizations. Then again, there are other known meters including the surface concrete meters that can be pretty useful in taking relevant readings of slabs already in place to know what areas of it are requiring further testing of real quantitative moisture testing methods. Todd Shupe LSU proposed that there has to be a true quantitative testing that ought to be done since surface concrete meters aren’t able to provide a clearer picture of moisture condition in slabs.
As for any flooring contractor, they may not do RH testing, it should be considered as it does wonderfully in reviewing job specifications and what the results are shown prior to the start of installation. Wood floor moisture problems in concrete slab might not be your ultimate responsibility but leaving this unchecked will become your problem in the future. That’s the same reason why this issue has to be dealt with great care according to Todd Shupe LSU. In the finished flooring, improper moisture condition in the subfloor wood can cause real problems in the finished flooring.
There are a lot more that you can learn about this from Todd Shupe LSU.