Consideration must be given to acoustical problems that develop in a natatorium. Structural features and finish materials should be selected that will absorb sound and reduce noise levels. In this regard, it is recommended that acoustical building materials be used on the walls and in the ceiling of the natatorium and that other noise dampening features be included, if possible.
Ceiling decks have been successful when a perforated epoxy coated galvanized structural steel panel is used. Further acoustical enhancement occurs if the panel is backed with polyethylene encapsulated fiberglass or closed cell styrofoam battens. 
A different approach for enhancing acoustics for a concrete roof system is hanging acoustical baffles between the concrete beams or T's. Suspended acoustical panels made of fabric- covered fiberglass, aluminum, closed cell rigid plastic foam board or a combination of these are functional. Not only do these units serve a technical purpose but they can also add color to the space. All must be corrosion resistant.
As with other materials in a natatorium, acoustical wall and ceiling must be corrosion resistant and interface with a vapor barrier, if necessary.