My windows are about 4' square directly placed on the concrete. Last winter there was some condensation build up on the concrete around the windows. Note: the windows did not leak - it was definitely condensation. I will most likely trim out the windows with oak extension jambs. Here are my questions.
1) Should I use liquid nails to glue the jambs directly to the concrete?
2) Should I put poly film between the concrete and jambs?
3) Should I use pink foam/XPS to cover the concrete and insulate it - thus removing the cold surface and hopefully the condensation?
4) If I cover the concrete with anything, how do I make sure that the oak jambs are firmly attached? Just nail them?