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  #1  
Old 9/24/10, 7:25 AM
Joshua L. Frederick Joshua L. Frederick is offline
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Default Blackened area around water heater vent
1977 house. The LP water heater vent transitioned to an oval vent to vent to the rooftop from basement. The construction materials in this area was blackened (rim/floor/sill/subflooring). Heat from pipe causing moisture? Any thoughts/insight? I know the pics aren't the greatest, but that's all I got.

Thanks in advance.
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  #2  
Old 9/24/10, 10:13 AM
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Default Re: Blackened area around water heater vent
Need clearance from wood and they chopped up that joist.
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Old 9/24/10, 11:41 PM
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Jeffrey R. Wicklander Jeffrey R. Wicklander is online now
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Default Re: Blackened area around water heater vent
Not sure if the flue caused the black or not. Anything else that might dump into that cavity? Get that copper off that nail and put in proper supports...galvanic reaction.

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Old 9/25/10, 12:06 AM
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Default Re: Blackened area around water heater vent
Looks like the nail is stopping the galvanic reaction in the picture though.
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Old 9/25/10, 12:29 AM
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Christopher Currins Christopher Currins is offline
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Default Re: Blackened area around water heater vent
The "oval vent" looks like a single wall furnace duct.


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Old 9/25/10, 6:51 AM
Brian A. MacNeish Brian A. MacNeish is offline
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Default Re: Blackened area around water heater vent
Quote:
Originally Posted by ccurrins View Post
The "oval vent" looks like a single wall furnace duct.
A piece of galvanized 3+1/4" X 10" is a standard piece of wall stack. Hope that does not vent to the attic or some other crazy location.
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Old 9/29/10, 11:59 PM
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Default Re: Blackened area around water heater vent
May be from old oil heater burning bad.
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