My wife and I are looking for more security than we currently have. We have a relatively inexpensive and mediocre quality Liberty gun safe for valuables but we need a little more. We have an area under the stairs that is a perfect area for a vault room but the walls are just drywall with 18 inch spaced studs. After some thought and review, most all safes can be breached in 15 minutes. We could reenforce the walls around the would be vault room and put a door on it or we could get a Ft. Knox safe. Does anyone have any experience with constructing a vault? Cost, time involved, breech resistance vs. a safe? Any advice is welcome.