Robert Braun is an R&D and Tech Service leader for the Dow Chemical Co. He has been the chair for the ASTM Subcommittee for aerosol foam sealants since 1999. Braun also chairs the AAMA Aerosol Foam Sealants Committee.
The importance of air tightness in design and construction has been stressed for more than 25 years. Air leakage can lead to reduced occupant comfort, increased heating and cooling loads, damage to the building envelope, and even indoor air quality issues.