// CODE SNIPPET
C406.2.2 Return Plenums
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If acceptable indoor radon concentrations are achieved in part by construction or modification of a return plenum, it shall be constructed with materials and closures which produce a continuous air barrier for the life of the building. Construction of the return plenum shall be done such that a continuous air barrier completely separates the plenum from adjacent building structures. If duct board is the primary air barrier, then the joints shall be sealed by fabric and mastic on the foil side of the board.
Related Code Sections
C406.2.2 Florida Standard for Mitigation of Radon in Existing Buildings, Return Plenums
If acceptable indoor radon concentrations are achieved in part by construction or modification of a return plenum, it shall be constructed ...
C406.2.2 Florida Standard for Mitigation of Radon in Existing Buildings, Return Plenums
If acceptable indoor radon concentrations are achieved in part by construction or modification of a return plenum, it shall be constructed ...
E406.2.2 Florida Standard for Mitigation of Radon in Existing Buildings Effective: June 1, 1994, Return Plenums
If acceptable indoor radon concentrations are achieved in part by construction or modification of a return plenum, it shall be constructed ...
B307.2.2 Chapter 9B-52 F.A.C. Florida Standard for Passive Radon-Resistant Construction, Return Plenums and Ducts
Return air shall be separated from any floor that is in contact with the soil or a crawl space, by a plenum or duct fabricated in compliance ...
B307.2.2 Chapter 9B-52 F.A.C Florida Standard for Passive Radon-Resistant Construction, Return Plenums and Ducts
Return air shall be separated from any floor that is in contact with the soil or a crawl space, by a plenum or duct fabricated in compliance ...