The impact of failing internal fiberglass duct lining can lead to IAQ complaints from occupants that may be dismissed or not properly identified and corrected. This presentation will review two case studies that will show the impact of internal fiberglass duct lining on occupants and methods of cleaning and improving the ducts.
In many high-end new-build projects, ductwork is routinely insulated to help minimize energy loss as conditioned air travels from the HVAC units through the ductwork. But duct insulation is being used more and more during retrofit projects in an effort to make older homes and buildings more efficient.
Fiberglass duct liner ToughGard Ultra*Round offers acoustical, thermal, and moisture control performance for spiral duct applications. It is a fiberglass duct liner overlaid with an extremely tough and durable fire-resistant black composite airstream surface, which is scored to allow for easy installation in spiral air ducts.
Manufactured from a durable polyester material, PolyArmor™ duct liner is fiberglass-free and won’t irritate the skin, the company said. The polyester material is webbed into a thermal blanket, which is then bonded with a Foil-Scrim-Kraft (FSK) facing to resist damage during system installation and operation.