Half our basement is dirt and we would like to finish it with a concrete floor. Eventually we will make an extra room there. We have heard different stories about how we need to do this. We have an 8 inch depth. We have been told to put down plastic on the dirt, then 4 inches of gravel and then 4 inches of concrete. Then someone else told us do not put plastic down, just do the 4 inches of gravel then concrete.
Does anyone have any experience in this?
Thanks so much.