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Thread: Why is my drain vent so tall?

  1. #1
    DIY Junior Member Crassius's Avatar
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    Oct 2012
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    Default Why is my drain vent so tall?

    My vent pipe is very high.... about 7 feet tall.... to high to see if there is a nest or something that needs clearing near the top. Its of PVC.

    Does it need to be so tall?

    I am thinking of breaking a joint so I can access it.

  2. #2
    Moderator & Master Plumber hj's Avatar
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    Is it on a deck or other area where people could get to it? THe installer may have extended it above the ridge of the roof to avoid downdraft problems.
    Licensed residential and commercial plumber

  3. #3
    DIYer, not in the trades LLigetfa's Avatar
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    Default

    A picture may help.

  4. #4
    DIY Senior Member Hairyhosebib's Avatar
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    Default

    Get a garden hose in the pipe and turn it on. If water does not overflow out of it then it is either clear or you cleaned it out with the hose.

  5. #5
    Moderator & Master Plumber hj's Avatar
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    The only way ANYTHING could be in it, without falling to the bottom, would be if it were overhanging the sides, and you would be able to see that.
    Licensed residential and commercial plumber

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