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  1. #1
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    Default Building Science guru's - rust going UP ?

    This Rheem electric 50-gallon appliance was manufactured in 2008 and is located in the basement of a house constructed in 1925.
    What would cause a repetitious pattern of rust moving "upward" from the metal screws at the base of this water heater?

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  2. #2
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    Default Re: Building Science guru's - rust going UP ?

    Maybe internal leakage and the hot water vapor is escaping at that point and rising.


  3. #3
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    Default Re: Building Science guru's - rust going UP ?

    But cold water is at the bottom of the tank.........


  4. #4
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    Default Re: Building Science guru's - rust going UP ?

    Quote Originally Posted by Dave Hahn View Post
    But cold water is at the bottom of the tank.........
    The water in the bottom of the tank may be "colder" than the water in the top of the tank, but it isn't "cold".

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
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  5. #5
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    Default Re: Building Science guru's - rust going UP ?

    The tank was left out in the rain, upside down.

    John Kogel, RHI, BC HI Lic #47455
    www.allsafehome.ca

  6. #6
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    Default Re: Building Science guru's - rust going UP ?

    Quote Originally Posted by Jerry Peck View Post
    The water in the bottom of the tank may be "colder" than the water in the top of the tank, but it isn't "cold".
    Agreed Jerry. Knee-jerk response to hot water vapor escaping.


  7. #7
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    Default Re: Building Science guru's - rust going UP ?

    That tank appears to be sitting on mud.

    Water entry issues, due to age of house.

    Was there a concrete floor or was heater sitting on dirt?


  8. #8
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    Default Re: Building Science guru's - rust going UP ?

    Quote Originally Posted by Raymond Wand View Post
    That tank appears to be sitting on mud.

    Water entry issues, due to age of house.

    Was there a concrete floor or was heater sitting on dirt?
    The tank is up on a concrete pedestal, but there may be a dirt floor in the crawlspace. It looks like moist soil in the pic.

    Not enough info in one closeup pic for an average guru to go on. A clairvoyant with telepathic powers might have a clue.

    Is there a chance the tank is older? Rheem date code is mmyy. Does the rust look more normal upside down? I can't decide. Obviously not a guru either.

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    Last edited by John Kogel; 06-21-2015 at 07:56 PM.
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  9. #9
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    Jun 2015
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    Default Re: Building Science guru's - rust going UP ?

    I am a new plumber nj and from my experience it looks like you left the heater out in the open on mud. The moisture content from the mud is causing the water heater to rust. Or it might even be some kind of internal leakage. Getting it inspected will be beneficial though.

    Last edited by Steve Waters; 06-27-2015 at 04:16 AM.

  10. #10
    Join Date
    Feb 2013
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    NY
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    Default Re: Building Science guru's - rust going UP ?

    Quote Originally Posted by Steve Payson View Post
    Maybe internal leakage and the hot water vapor is escaping at that point and rising.
    Agree with the hot water vapor scenario, but doesn't have to be internal leakage although that is a possibility.

    - - - Updated - - -

    Quote Originally Posted by Steve Payson View Post
    Maybe internal leakage and the hot water vapor is escaping at that point and rising.
    Agree with the hot water vapor scenario, but doesn't have to be internal leakage although that is a possibility.

    - - - Updated - - -

    Quote Originally Posted by Steve Payson View Post
    Maybe internal leakage and the hot water vapor is escaping at that point and rising.
    Agree with the hot water vapor scenario, but doesn't have to be internal leakage although that is a possibility.


  11. #11
    Join Date
    Jul 2008
    Location
    Downstate NY
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    Default Re: Building Science guru's - rust going UP ?

    Quote Originally Posted by Dave Hahn View Post
    This Rheem electric 50-gallon appliance was manufactured in 2008 and is located in the basement of a house constructed in 1925.
    What would cause a repetitious pattern of rust moving "upward" from the metal screws at the base of this water heater?
    Not only that, but my eyes see faint wisps of rust coming up from the bottom of the tank's bottom pan. And, to me it looks like the tank is sitting on top of a very badly rusted metal band going around whatever the tank is sitting on. Perhaps a retainer for the footing.

    Do you have the option of shutting off the water supply with a pressure gauge on the hot water line. Look for leak-down. If leaking may just be enough to partially fill the pan but not overflow it.

    Stan


  12. #12
    Join Date
    Oct 2012
    Location
    Massacusetts
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    149

    Default Re: Building Science guru's - rust going UP ?

    Electrolysis - dis similar metal (screw) creating a small current to the connection point of ground (copper water pipes) semi grounded base - in essence your water heater is a battery - the rust is going in the same direction as the electrical current .

    or physics has changed directions and the building is in another dimension - welcome to the twilight light zone

    (Put #2 in your report , Maybe the same person who wants to add energy audits should insist every property be evaluated for poltergeists and too )


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