Soaked Subfloor Install Hardwood Drying System Continue vacuuming the floor so as to remove water from invisible pores in the wooden that can trigger water harm later. We suggest to put a four-6 mil plastic down on the slab first to retard any minor moisture transfer from the concrete. http://garrettavekp.blogolize.com/Fast-Facts-For-Sub-Floor-Ventilation-System-Some-Professional-Recommendations-34580338