Duct adhesives

Please see memo below explaining that Duct sealants are in the catagory of “Other” in the SCAQMD VOC Limits table has a maximum limit of 420 g/l. Technical Resources Bulletin July 31, 2009 TRB #9-09 To: SMACNA Members From: Technical Resources Department Subject: UPDATE on HVAC Duct Sealant Usage Requirements on USGBC LEED® Projects The following bulletin is an update to TRB #4-09 issued March 27, 2009 with the Subject: HVAC Duct Sealant Usage Requirements on USGBC LEED® Projects. In response to the following Credit Interpretation Request (CIR): “How does a project team classify duct sealants for application under EQc4.1?” the USGBC issued the following ruling: “Project teams may classify duct sealants under “Other”, as listed in the SCAQMD VOC Limits table.” The category of “Other” in the SCAQMD VOC Limits table has a maximum limit of 420 g/l. This should allow most if not all duct sealants to be utilized on LEED® projects, and permit the proper sealing of ductwork at temperatures below 40°F (5°C). In keeping with SMACNA’s policy on sustainability, contractors are encouraged to use products with the least environmental impact for the intended application and jobsite conditions.