CADS Fiber-Reinforced Duct Mastic Sealant

Our CADS (Contractor-Approved Duct Sealant) Fiber-Reinforced Duct Mastic is our most economical water-based duct mastic. CADS is fiber-reinforced and rated for high-velocity HVAC systems and has excellent mold and mildew resistance. CADS may be used to seal all types of HVAC duct systems, including metal, fiberglass, duct board and flex duct. It can be used for both indoor and outdoor applications and is preferred by residential and commercial duct-sealing professionals alike.