Abstract: A method and apparatus for protecting a floor safe from water damage including an outer shell member mounted in an annular area formed between the case or housing of the floor safe and the foundation in which the floor safe is mounted; a protective enclosure including a lower rim portion is mounted over the floor safe case and held in position by retainer pins which extend through the outer shell member into engagement with the lower protective cap rim portion, the protective enclosure trapping air between the enclosure and the floor safe for providing an air pressure barrier to resist the intrusion of water into the area of the openable floor safe top.