Commercial Kitchen Exhaust Duct Insulation

Leading manufacturer of chimney venting and air distribution products for commercial and residential hvac industries for over 80 years.

Commercial kitchen exhaust duct insulation. Insulation on the duct in the kitchen offers no protection. R 408 30935a 506 2 corrosion protection. Insulation is applied to kitchen ducts as they pass through other compartments. Fyrewrap elite 1 5 duct insulation is tested per astm e2336 and is acceptable as an alternate to a traditional fire rated shaft.

A fire in another compartment unrelated to the kitchen could potentially ignite the grease and cause a fire to cascade throughout a building. Fyrewrap elite 1 5 duct insulation offers the following product features. All supply and return air ducts and plenums shall be insulated with a minimum of r 5 r 6 insulation when located in unconditioned spaces and a minimum of r 8 insulation when located outside the building. We use insulation to mitigate this risk.

Unlike particle deposition in turbulent airflow turbulent vapor deposition is a well understood and documented phe nomena. Therefore it is likely that many commercial cooking exhaust systems do not ex perience significant temperature differences even with non insulated ducts. The grease hood duct from the ceiling to where it exits the building should be enclosed in a fire rated enclosure or approved fire barrier type insulation see 3m or be listed double wall grease duct see metalfab except if the roof where the duct exits is right above the room hood. Fyrewrap elite 1 5 duct insulation is a two layer flexible enclosure for two hour rated commercial kitchen grease ducts.

Exhaust ducts for domestic range hoods installed in commercial applications shall be vented to the outside and shall be constructed of a type b vent or b smooth wall duct constructed of galvanized or stainless steel with a minimum duct thickness of 0 0157 inches 0 40 mm or constructed of aluminum or copper with a minimum duct thickness of 0 023 inches 0 58mm. The zc models are all stainless steel and factory insulated grease duct for use in commercial kitchen exhaust systems which meet the requirements set forth by underwriters laboratories for the ul 2221 standard. They are heavily insulated for zero clearance to combustibles and a two hour fire rated shaft assembly. Commercial kitchen hood ventilation ducts and exhaust equipment shall be in compliance with nfpa 96 2014 which is the standard of the national fire protection association listed in chapter 15 of the code.

Installed as a two layer system fyrewrap elite 1 5 complies with the international mechanical code imc and uniform mechanical code umc. For more information about kitchen extract contact us or call 353 1 456 8200.