I am going to redo my finished basement, which is basically redoing it from scratch. I have been wanting to isolate the floor from the concrete. I don't want to add much to the height since the ceiling is < 8 feet. Has anyone floated 3/4" tongue and groove treated plywood over 6 mil plastic over the concrete. The T/Gs would be glued. My main reason is for thermal and making a humidity barrier from the carpeting. Any ideas or suggestions would be appreciated !