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Thread: White flex duct

  1. #1
    Join Date
    Oct 2012
    Location
    Shelby NC
    Posts
    129

    Default White flex duct

    Is the degradation in the flex due to moisture from condensation on the interior of the duct?

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  2. #2
    Join Date
    Apr 2013
    Location
    High Springs, Florida
    Posts
    97

    Default Re: White flex duct

    Possibly duct mastic to repair a damaged flex duct.


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  3. #3
    Join Date
    Mar 2007
    Location
    Orlando, FL
    Posts
    1,336

    Default Re: White flex duct

    I'm unclear what you're describing. The "white" is standard duct mastic, is the duct damaged under the mastic? Is there a previous tear or rip, or did you observe some other anomaly, such as sagging or kinking?

    Dom.


  4. #4
    Join Date
    Mar 2007
    Location
    Santa Rosa, CA
    Posts
    2,464

    Default Re: White flex duct

    Looks to me like the reflective mylar has worn off for some reason. Is the duct intact? Does it look like the duct was submerged at any time. If the duct is essentially ok, then I think it is worth noting, but not sure if replacement is necessary. I would certainly make the comment and you could leave it up to a heating contractor.

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  5. #5
    Join Date
    Sep 2017
    Location
    austin, texas
    Posts
    3

    Default Re: White flex duct

    I'd recommend a duct leakage test. That is a vey large repair area (rodents?). I doubt all that mastic has properly sealed that duct.

    Also, I'm curious as to what the metal pipe is? Doesn't look like a type b pipe but if is was, then it doesn't look like it has the proper clearances from the duct. Also, the PVC pipe supports the duct, which isn't proper support.


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