Fire Rated Duct Wrap

Rectangular HVAC duct wrapped in foil-faced rockwool insulation secured with metal bands.

What is Fire-Rated Duct Wrap

Fire-rated duct wrap is a flexible, non-combustible insulation system used to help prevent the spread of fire through ductwork that passes between fire-rated compartments. It’s especially suitable for systems where the use of fire dampers is impractical or non-compliant, such as kitchen exhaust ducts or continuous ventilation systems.

At HALT FIRE, we supply and install fire-rated duct wrap systems that are tested and compliant with New Zealand Building Code Clause C3 and relevant standards. We focus specifically on fire resistance, not smoke control, and ensure all work is backed by proper QA and documentation.

Side-by-side comparison of damper-restricted duct and foil-wrapped insulated duct, demonstrating continuous airflow and passive fire protection benefits.

Why Use Duct Wrap Instead of Dampers

Fire-rated duct wrap is commonly used when fire dampers:

  • Would obstruct airflow (e.g. in kitchen exhaust systems)

  • Are difficult to maintain or access

  • Do not suit the duct type or fire separation layout

  • Would create hygiene or cleaning issues in grease-laden ducts

In these cases, duct wrap provides a passive fire protection solution that allows continuous ductwork to remain operational while achieving required fire ratings.

Cutaway view of a commercial kitchen ventilation system with fire-rated duct wrap passing through escape egress and service riser

Common Applications

  • Commercial kitchen exhaust ducts

  • Ducts passing through multiple fire compartments

  • Vertical risers and return air shafts (where fire containment is needed)

  • Retrofitted fire protection to existing ductwork

Map outline of upper North Island, New Zealand, highlighting Halt Fire’s passive fire protection service areas including Auckland, Northland, and North Waikato.

📍 We Service Auckland, Northland & North Waikato

Need to protect kitchen ducts or fire-separate ventilation shafts? We’ll help assess whether duct wrap is the right solution for your building and deliver fully compliant installation backed by QA and experience.

Contact HALT FIRE today for fire-rated duct wrap installation advice and quotes.

📞 Get in Touch

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