InsulPure™ Duct Wrap and WideWrap are purpose-built to provide thermal efficiency for rectangular and round heating, ventilating and air-conditioning ductwork. They help to reduce  unwanted heat loss or gain and, when properly installed in the correct thickness, have the potential to virtually eliminate condensation problems on cold duct surfaces. The 5’ width accommodates larger ducts and means less labor, less wasted material and a cleaner installed appearance.

Now Available in R12
Meet new code requirements. Enhance HVAC efficiency.


  • Composed of white, uniformly textured, inorganic fibrous glass formed with a formaldehyde-free binding agent.
  • Available unfaced or with FSK or white PSK vapor retarder facing. On faced products, a stapling/taping tab is provided on one edge. 
  • Suitable for use with most heating, ventilating and air-conditioning ductwork operating at temperatures from 35°F to 250°F (1.7°C to 121°C) for faced InsulPure Duct Wrap and WideWrap, and from 35°F to 450°F (1.7°C to 232°C) for unfaced.



Technical Information


All fabrication, application and installation steps shall be in accordance with the requirements of the product specification sheet or the National Commercial and Industrial Installation Standards (current edition) published by the Midwest Insulation Contractors Association (MICA). Refer to CertainTeed installation manuals or CertainTeed specification sheets for installation guidelines.


An inspection and preventative maintenance program for the HVAC system is recommended to ensure optimum performance. For optimum performance and longest life, the insulation should be kept dry at all times.

Warranty Details

Please refer to CertainTeed's Duct Wrap Limited Lifetime Warranty


Sustainability Information

CertainTeed insulation products improve building energy efficiency and reduce building energy consumption for the life of the structure. As a result, they help conserve nonrenewable energy sources, decrease dependence on foreign oil and lower greenhouse gas emissions. In addition, the recycled content of CertainTeed fiber glass insulation meets the EPA minimum Recovered Material Guideline for fiberglass products consisting of preconsumer and post-consumer glass cullet. CertainTeed Sustainable Insulation is GREENGUARD Gold Certified for low chemical emissions into indoor air during product usage.

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