Chimney recommendations.

Medic21 Posted By Medic21, Sep 1, 2018 at 12:37 PM

  1. Medic21

    Medic21
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    Feb 26, 2017
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    Not looking like the boiler will be fully installed until December or January due to replacing a well and a Jeep that kissed a deer this summer. I am thinking about changing the chimney because it has draft issues on warmer days and with a north wind it’s horrible. The picture is looking north. A 4 foot section and roof bracket have been ordered. Will this be enough?

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  2. JRHAWK9

    JRHAWK9
    Minister of Fire 2.
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    Jan 8, 2014
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    Loc:
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    2', 10', 3' rule........The chimney must extend at least 3’ above the highest point where it passes through a roof. And at least 2’ higher than any portion of a building within 10′.
     
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  3. Medic21

    Medic21
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    Feb 26, 2017
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    It actually meets that now. I measured it a couple years ago. I’m thinking, I’m no expert at all, the wind coming over the roof is creating a downdraft to contend with. Am I wrong in thinking this?
     
  4. JRHAWK9

    JRHAWK9
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    Jan 8, 2014
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    I'm no expert either. LOL I just know about that rule back when I was looking at different chimney options. hmm, it's probably hard to tell from the photo, but it sure seems like it wouldn't. What pitch is your roof and how much does your current chimney stick above the roof right now?
     
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  5. Medic21

    Medic21
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    Feb 26, 2017
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    4’ and I think around a 5/12 pitch.
     
  6. JRHAWK9

    JRHAWK9
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    Jan 8, 2014
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    Doing some crude math, on a 5/12 pitch roof, at 10' away you are 4.2' vertically. Which means you need to have at least 6.2' of exposed chimney from the base. If you add another 4', then you should be good.
     
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  7. Medic21

    Medic21
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    Feb 26, 2017
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    Lol, I think I may have just measured ten foot after making a 2 foot mark and not two foot above. Math was never my strong suit.
     
  8. JRHAWK9

    JRHAWK9
    Minister of Fire 2.
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    Jan 8, 2014
    790
    362
    Loc:
    Wisconsin Dells, WI
    oops! To me, judging by your photo, you don't look like it's tall enough based on that rule. However, it's hard to tell for sure looking at a photo.
     
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