I came across a slab-on-grade foundation house built in 1984 that had exposed ground soil underneath each bathtub, as viewed from the access panels in the room behind each. Has anyone else run into this?
The groundwater had caused some damage to the framing members around the tub, and some termite damage was evident. Why would this be setup this way? And what should be done to fix the moisture issues being caused? Would you recommend they put down a 6-mil poly vapor barrier like in a crawl space? Or should concrete be poured? This is in the middle of the house with absolutely no ventilation getting to it.