There are layers contributing to moisture problems like what is said by Todd Shupe LSU which is quite common when working to avoid on wood floor moisture. Acclimating and installing the flooring product on its own is only among the numerous steps that shod be done in order to correctly install wood flooring products.
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. Say that the new slab is not thoroughly dried to finished specs, that moisture is going to wick through the surface of concrete and can cause anything from adhesive failure, wood warping or cupping.
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. Basically, even with the usual vapor barrier, it would not stop moisture to create problem if the slab is not 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. There are other testing methods that have been discontinued by several organizations such as poly film test or calcium chloride testing due to the reason that it was observed to be problematic before. There are other varieties of meters such as surface concrete meters that might be useful at times in taking relative readings in current slabs to be able to figure out areas for further testing with the real quantitative moisture testing approaches. Surface concrete meters don’t provide thorough picture of moisture conditions in the slab and for that, true quantitative testing should be done as what suggested by Todd Shupe LSU.
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. You may contest this by saying that wood floor moisture issues aren’t your responsibility but you should know that not doing your part can bring some unwanted issues. This is why Todd Shupe LSU informs contractor to always deal with this issue professionally. Improper moisture condition in the wooden subfloor may result to moisture related problems in finished floor.
There are a lot more that you can learn about this from Todd Shupe LSU.