In order to put a safe on the second floor, take into consideration the weight and size of the storage. That because heavy and huge vaults require special approach, equipment and skills to get it upstairs and squeeze it in a door frame. Another thing to consider is how to carefully move the safe, so that the stairs and door ways were not damaged. For that it is important to cover the stairs with a protective barrier and put protective covers for wrapping around doorways to prevent scratches or dings. And lastly, a gun safe should be bolted down or fixed properly.