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  1. #1
    Join Date
    May 2007
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    Portland OR
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    Default whitish deposits on chimney from gas furnace

    Any idea what is causing these whitish deposits on the chimney below the gas furnace flue? I know the chimney needs a lot of work. I could not get up to the top to take a good look, too steep for me!

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  2. #2
    Join Date
    Aug 2007
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    Memphis TN.
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    Default Re: whitish deposits on chimney from gas furnace

    Ken,

    Looks like Dryer Lint to me .

    It Might have Choked Artie But it ain't gone'a choke Stymie! Our Gang " The Pooch " (1932)
    Billy J. Stephens HI Service Memphis TN.

  3. #3
    Join Date
    Feb 2008
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    Caledon, Ontario
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    Default Re: whitish deposits on chimney from gas furnace

    Could be efflorescence, caused by a gap in the liner spilling combustion gases which are laiden with moisture or rain entry into the damaged cap.



  4. #4
    Join Date
    Mar 2007
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    Connecticut
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    Default Re: whitish deposits on chimney from gas furnace

    Ken, That looks like the cement paste they used to seal the liner connection mabey got rained on before it set up and some of it washed down the side of the chimney. You normally wouldn't have a round cap unless a new liner had been installed. If clay liner, square cap.


  5. #5
    Brian Thomas's Avatar
    Brian Thomas Guest

    Default Re: whitish deposits on chimney from gas furnace

    I would have thought efflourescense too. But that doesnt really look like it to me. It looks more like something that spilled up there like wayne said.


  6. #6
    Join Date
    May 2007
    Location
    Portland OR
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    43

    Default Re: whitish deposits on chimney from gas furnace

    Thanks Wayne & Brian,
    There is a stainless steel liner visible going into the chimney from the basement. Assuming it goes all the way up, your idea makes sense. I'm not familiar with the cement paste you mentioned, I'll do some research on that. I'm going to stay in touch with the buyer and find out what the chimney guy has to say when he gets up there.


  7. #7
    Join Date
    Mar 2007
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    Ormond Beach, Florida
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    26,252

    Default Re: whitish deposits on chimney from gas furnace

    Quote Originally Posted by Brian Thomas View Post
    It looks more like something that spilled up there like wayne said.
    Something spilled or wash(ed)(ing) off.

    There is some on that wire wrapping around the chimney, so it looks like something 'ran off and over the edge'.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  8. #8
    Join Date
    Mar 2007
    Location
    Connecticut
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    Default Re: whitish deposits on chimney from gas furnace

    What he will say is,"why did they do all that when the rest looks like this"? The rest will be Italian or Spanish cursing under his breath.


  9. #9
    Join Date
    Oct 2003
    Location
    Rockwall Texas
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    4,519

    Default Re: whitish deposits on chimney from gas furnace

    GOT PIGEONS?


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