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Thread: Single Wall Boiler Vent - Combustibles Clearance

  1. #1
    DIY Senior Member molo's Avatar
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    Sep 2006
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    cold new york
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    Default Single Wall Boiler Vent - Combustibles Clearance

    I am building a basement window cover. There is a boiler vented with 3" Stainless Steel vent pipe through the basement window opening. I would like to incorporate a 2" rigid foam Dow board into the new cover.

    Does anyone know the required clearance between the vent pipe and the foam board?

    Thank You,
    Bill
    "Any American who is prepared to run for President should automatically, by definition, be disqualified from ever doing so."
    Gore Vidal.

  2. #2
    Moderator & Master Plumber hj's Avatar
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    Aug 2004
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    Cave Creek, Arizona
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    25,624

    Default

    6" is the standard for single wall vent pipe.
    Licensed residential and commercial plumber

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