by Mark Hansberger on March 20, 2012March 20, 2012 Ductwork Sealing: Why Mastic’s A Must Duct tape can fix anything… except ducts. Despite its name, professionals do not use duct tape for ductwork sealing, and neither should you. Having well-sealed ducts is important for keeping energy costs low, keeping your […]Read More Filed Under: Ductwork Tagged With: Arizona– duct tape– ductwork sealing– mastic sealant– professional duct sealing– Yuma