I want to turn an attached garage into a bedroom. The slab is cracked but not buckled. Do I seal the crack? Do I put down a vapor barrier before I lay the new 2x4's for the floor? Then Styrofoam insulation? Then the osb floor? Also do you think I need pressure treated 2x's? I know I will need to put one at the bottom on the floor where the garage door used to be. But what about for the floor joists?
The reason I want to raise the floor and insulate is I live in Wisconsin and floors get cold in winter. the other is I that the floor is not level raised very little from the crack in the center so putting a floor directly on top will not work
Thanks to all