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Thread: Roof Penetration for Tank Vent

  1. #1
    DIY Senior Member molo's Avatar
    Join Date
    Sep 2006
    Location
    cold new york
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    840

    Default Roof Penetration for Tank Vent

    Roof Penetration for Tank Vent:

    Hello all,
    I will be running a hot water tank vent pipe through the roof.
    Can anyone reccomend the best way to make this transition while maintaining fire safety and water tightness?

    TIA,
    Molo

  2. #2
    Plumber jimbo's Avatar
    Join Date
    Aug 2004
    Location
    San Diego
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    9,001

    Default

    This should be done with double wall b-vent which requires 1" min clearance to combustiblematerial. There are fittings available from this to provide the clearance and flash the penetration, also a cap for the top of the pipe.

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