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Thread: tallish vent

  1. #1
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    Default tallish vent

    I wasn't inspecting this house, except the way most of us inspect houses we happen to be walking past.

    Vent seems a tad excessive, what?

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  2. #2
    Michael Schirmer's Avatar
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    Default Re: tallish vent

    They may have had some draft problems. Generally, the top of the chimney should be 2' higher than anything within 10' of it. It just looks sloppy all out-of-plumb and crazy guy wires.


  3. #3
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    Default Re: tallish vent

    Quote Originally Posted by Michael Schirmer View Post
    ... Generally, the top of the chimney should be 2' higher than anything within 10' of it...
    It's probably a gas vent, in which case chimney rules don't apply.

    "There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
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  4. #4
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    Default Re: tallish vent

    "There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
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  5. #5
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    Default Re: tallish vent

    Quote Originally Posted by Michael Schirmer View Post
    They may have had some draft problems. Generally, the top of the chimney should be 2' higher than anything within 10' of it. It just looks sloppy all out-of-plumb and crazy guy wires.
    Quote Originally Posted by John Arnold View Post
    It's probably a gas vent, in which case chimney rules don't apply.
    Quote Originally Posted by Roger Brown View Post
    2 feet above ANY structure within 10 feet. looks right, except guy wires need attention.
    John is correct, you guys are applying chimney height requirements to gas vents, which are different.

    Gas vents are required to be 1 foot minimum in height above the roof on the high side (and higher depending on the slope of the roof), and 2 feet higher that any obstruction (such as a wall) which is within 8 feet of it.

    The chimney rule is 3, 2-10 (3 feet high minimum, and 2 feet higher than any part of any structure within 10 feet).

    The gas vent rule is 1*, 2-8 (1 foot high minimum and *higher depending on roof slope, and 2 feet higher than any vertical obstruction within 8 feet).

    *higher depending on roof slope is shown in the attached

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