It used to be, if somebody was going to finish a concrete or cinder block basement, they would put up 1x furring strips, cut some kind of foam board so it fit between the furring strips, and put paneling or sheetrock on top.
Now it seems that they put a solid layer of foam board on the wall, put the furring strips on top of the foam and then put the wall board on the furring strips, so there's a 1x gap between the wall board and foam board. At first I thought it was so that there would be no breaks in the insulation, but now I hear that it's to leave an air gap between the foam and wall board to prevent mold.
So I have two questions:
1) Have I got all this correct?
2) There's still no air gap between the foam board and the concrete wall, so what about mold there?
If somebody could clarify this for me, I'd appreciate it.