The process of supplying or removing air, by natural or mechanical means, to or from any space. Such air may or may not have been conditioned.
A barrier essential to prevent moisture from infiltrating into, or migrating from, a data processing center or other “critical space” that contains sensitive electronic instrumentation. Vapor barriers may be created using plastic film, vapor-retardant paint, vinyl wall coverings and vinyl floor systems, in combination with careful sealing of all openings (doors and windows) into the room.
A moisture-resistant layer applied to the surfaces of humid spaces that prevents moisture from traveling to a point where it might condense due to lower temperature.