Standard Kitchen Duct On Roof

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.

Standard kitchen duct on roof.

If you live in an area where frost occurs add an insulated duct sleeve to the portion of pipe in the attic. Screw the ductwork together with 1 4 in. Grease hood duct should not be lined. Cut the hole for the duct attach it then install the roof cap.

If you have any questions please feel free to give us a call at 877 901 5530. Whether it s a straight and vertical shot from stovetop to rooftop or there are multiple twists and turns involved in the ductwork kitchen exhaust cleaners must be able to work with any system as multipurpose facilities and mixed use developments become increasingly popular kitchen exhaust systems must adapt to a. Standard range hood duct sizes. The relevant standard which forms the basis for the california ventilation code is ashrae standard 62 2 2007.

California requires kitchen ventilation in all new construction and remodels and even if your local authorities don t require it you should address it anyway. Every commercial kitchen exhaust hood ventilation system is available with pre piped fire suppression if you have any questions relating to roof curbs installation or any other exhaust hood questions you can contact a hoodmart professional at any time using our chat portal or by calling 1 800 715 1014. Standard up blast power roof ventilators prv up to 2 in. Hood static pressure loss in.

Hopefully this kitchen exhaust duct sizing guide helps provide some answers and insight about choosing and planning out the size of your duct and how you will run it. A fire within the. Imok2 the lining in your link if for the makeup air supply. Ducts come in several sizes for range hoods.

Finally install the hood. Sheet metal screws and seal the seams with aluminum faced duct tape not regular cloth backed duct tape. Kitchen exhaust systems can be as different as the kitchens they serve. 7 8 2 1 rooftop termination shall be arranged with or provided with the following.

Fire spreads to grease on rooftop fire spreads to other systems fire breaks out in kitchen fire spreads into exhaust ductwork fire breaks out at fan in plantroom burning grease leaks out of duct joins plantroom figure 2. 8 a hinged upblast fan supplied with flexible weatherproof electrical cable and service hold open retainer to permit inspection and cleaning that is listed for commercial cooking equipment. Minimum duct sizes and recommended duct sizes are based on the cubic feet per minute rating of the duct fan.