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Thread: Rusting chimney

  1. #1
    Jon mackay's Avatar
    Jon mackay Guest

    Default Rusting chimney

    What would the recommendation be for an appliance chimney (water heater) that has surface rusting?

    Should it be primed and painted? It is over 40 years old so I didn't think it would get a whole lot worse any time soon.

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  2. #2
    Join Date
    Mar 2007
    Near Philly, Pa.

    Cool Re: Rusting chimney

    The warranty has expired and this vent has outlived its normal service life. Replace it. Also, if this is only a WH, it is probably oversized. Otherwise, they should perform combustion analysis to ascertain if it is firing properly.

    Keep the fire in the fireplace.

  3. #3
    Join Date
    Mar 2007
    Lake Barrington, IL

    Default Re: Rusting chimney

    Jon, As Bob referenced it is a vent, not a chimney. A technicality perhaps but one worth adhering to.

    Eric Barker, ACI
    Lake Barrington, IL

  4. #4
    Join Date
    Feb 2008
    Chicago IL

    Default Re: Rusting chimney

    That much rust I recommend replacement. When it's less rust and more like surface rust, I recommend prime and paint with approved materials for the application.
    "The Code is not a ceiling to reach but a floor to work up from"


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