Carlisle SynTec Systems recently introduced VapAir Seal^™MD,an air and vapor barrier for direct-to-metal-deck applications.The product is the first self-adhered air and vapor barrier that is FM Approved and is recommended for applications over metal decks when the insulation or roofing substrate is mechanically fastened. The barrier not only stops vapor drive, it also prevents air from moving moisture into the roofing system.It can be easily seamed and used to flash penetrations,creating a complete air and vapor seal. VapAir Seal MD protects the roofing system from environments with extreme internal humidity. For more information, visit Booth #543 or www.carlislesyntec.com.