Assembling Ductwork For Range Hood

Discussion in 'HVAC Heating & Cooling' started by Leaky1, Sep 23, 2013.

  1. Leaky1

    Leaky1 New Member

    Messages:
    22
    Location:
    California
    I am running 7 inch round 26 gauge metal duct for our kitchen and assembling five 3 foot sections for a long run.

    When I align all the seams I find one seam on top of another forces the walls of the mating ducts apart significantly. Would it be better rotate the mating ducts so the seams are four inches apart? I find doing this reduces the distortion of the duct walls.

    In addition, I am using three #8x1/2†screws to secure the mating ducts together and sealing the joint with UL Listed metal duct tape. Should the seams that run along the length of the pipe be sealed also with tape?

    Thank you for taking the time to read my post and consider my questions.
  2. Leaky1

    Leaky1 New Member

    Messages:
    22
    Location:
    California
  3. Smooky

    Smooky Member

    Messages:
    622
    Location:
    NC
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