At the old house, the safe sat quite nicely in a bedroom closet. New house, it's sitting in it's own room on concrete slab, over carpet/pad, with steel door to the room. I've converted the garage into a library and used some of the room on the other side of the wall for a safe room. Last four years, the safe sat in the garage, on slab, with some hardwood flooring bits between the steel and the concrete, no issues. I was not pleased when the neighbor across the street remarked about what a big gun safe I had, it was partly visible when the door was up. Now it's invisible, in a double locked room.