The Hardcast Foil-Sealant Duct Sealing System from Carlisle HVAC reduces ductwork air leakage, energy loss and moisture intrusion. It is a combination of rolled mastic sealant and brush- or spray-applied mastic. This system includes Hardcast’s Iron-Grip 601, Spray-Seal or Versa-Grip 181 liquid mastic sealant. Once the liquid sealant has cured completely, the mastic is overlaid with a 4-inch-wide strip of AFT-701 rolled sealant. When properly installed, the Hardcast Foil- Sealant Duct Sealing System is eligiblefor a 10-year material-only warranty.
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