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  1. #1
    Join Date
    Feb 2004
    Location
    tenn
    Posts
    165

    r value duct work

    can anyone tell me what the r value is on duct work for tenn and kentucky thanks
    birdman

  2. #2
    Join Date
    Nov 2006
    Location
    801 Del Rio pike Franklin Tennessee
    Posts
    126
    R 4.5 or 2" in conditioned area and R 8 or 3" in unconditioned.

  3. #3
    Join Date
    Jun 2010
    Location
    Philadelphia PA
    Posts
    2,190

    TN requires insulation in conditioned spaces

    Quote Originally Posted by tcktech View Post
    R 4.5 or 2" in conditioned area and R 8 or 3" in unconditioned.
    I think it is smart, given the possibility or probability of condensation BUT I am suprised they require it
    By the way, 1 inch ductboard is R 4.2 nom 5
    You have got to learn from other people's mistakes! Because God knows you don't live long enough to make them all yourself !!!!!!!!

  4. #4
    Join Date
    Feb 2004
    Location
    tenn
    Posts
    165
    thanks
    birdman

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