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  1. #1
    Join Date
    Jun 2005
    Posts
    37
    What R-factor whould your recomend for duct in a Houston, Texas attic?

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,721
    Sorry, don't have my code book at home with me, or I'd tell you what the minimum code requirement is for your area.


    Your contractor should know.
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    How many times must one fix something before it is fixed?

  3. #3
    Join Date
    Nov 2004
    Location
    SW FL
    Posts
    6,238

    Duct R-Value

    R-6 should be Standard.

    I suspect that R-8 duct would not be in common usage.
    Designer Dan
    It's Not Rocket Science, But It is SCIENCE with "Some Art". ___ ___ K EEP I T S IMPLE & S INCERE

    Define the Building Envelope and Perform a Detailed Load Calc: It's ALL About Windows and Make-up Air Requirements. Know Your Equipment Capabilities

  4. #4
    Join Date
    Feb 2003
    Location
    Huntsville,AL
    Posts
    4,125
    R8 or more! the biggest $$ in the labor -- savings from now on --
    be sure all joints & seams have mastic first!

  5. #5
    Join Date
    Jun 2004
    Location
    Dallas
    Posts
    179
    The highest you can find, period.

    Lowes has foil-wrapped r-8 off the shelf.

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