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// CODE SNIPPET

506.8 Types I and II Hoods

NYC Mechanical Code 2008 > 5 Exhaust Systems > 506 Commercial Kitchen Hood Ventilation System Ducts and Exhaust Equipment > 506.8 Types I and II Hoods
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All exhaust ducts serving Type I or Type II hoods shall have a minimum insulation covering of 2 inches (51 mm) of magnesium or calcium silicate block, attached with galvanized steel wire or construction equivalent in insulating and fire resistance qualities, and shall be applied to all ducts inside of the building. The insulation shall be applied up to the outer face of the discharge from the building and shall also be applied to the housing of the exhaust fan when it is located inside of the building. Care shall be taken to insure that the insulation extends through the walls and roofs to separate the ducts from the building construction. Masonry or concrete ducts shall not require insulation.

Related Code Sections


506.8 Exhaust Systems, Types I and II Hoods
All exhaust ducts serving Type I or Type II hoods shall have a minimum insulation covering of 2 inches (51 mm) of magnesium or calcium silicate block ...
NYC Mechanical Code 2008 > 5 Exhaust Systems > 506 Commercial Kitchen Hood Ventilation System Ducts and Exhaust Equipment > 506.8 Types I and II Hoods
507.2 Exhaust Systems, Where Required
A Type I or Type II hood shall be installed at or above all commercial cooking appliances in accordance with Sections 507.2.1 and 507.2.2. Where any ...
NYC Mechanical Code 2008 > 5 Exhaust Systems > 507 Commercial Kitchen Hoods > 507.2 Where Required
507.2 Exhaust Systems, Where Required
A Type I or Type II hood shall be installed at or above all commercial cooking appliances in accordance with Sections 507.2.1 and 507.2.2. Where any ...
NYC Mechanical Code 2014 > 5 Exhaust Systems > 507 Commercial Kitchen Hoods > 507.2 Where Required
514.2 Exhaust Systems, Prohibited Applications
or flammable vapors, fumes or dust. Smoke control systems covered in Section 513. Commercial kitchen exhaust systems serving Type I and Type II ...
NYC Mechanical Code 2014 > 5 Exhaust Systems > 514 Energy Recovery Ventilation Systems > 514.2 Prohibited Applications
514.2 Exhaust Systems, Prohibited Applications
Type I and Type II hoods covered in Section 506. Clothes dryer exhaust systems covered in Section 504 ...
NYC Mechanical Code 2008 > 5 Exhaust Systems > 514 Energy Recovery Ventilation Systems > 514.2 Prohibited Applications
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