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Old 04-17-2012, 09:30 AM   #1
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Supporting Exhaust Duct

Kitchen exhaust system. 7", 26 gage duct comes up from hood in a cabinet, two elbows to do an offset, goes up through the cabinet, penetrates attic floor above, keeps going up, two more elbows for another offset and connects to a roof cap. How do I support this? I'm guessing some kind of support right where it comes through the attic floor would work best, but I can't seem to figure out how. Duct also comes up in between two truss members that I could string some support 2x4s, but I'm at a loss as to how to attach the duct to this for support other than wrapping with ugly metal strap.


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Old 04-17-2012, 11:14 AM   #2
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It's in the attic, what differance does it make if it's ugly?
Why all the elbows? That's really cutting down on the air flow.


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Old 04-17-2012, 11:45 AM   #3
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Metal strap. Wrap the pipe once in it, in a few different spots, and screw the ends into the wood. It'll hold it in place and it's legal. It's how we also support flue pipe from a furnace.
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