(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 7 of 7

Thread: Vent pipe termination distance over roof?

  1. #1
    Extreme DIY Homeowner Scuba_Dave's Avatar
    Join Date
    Jan 2009
    Location
    South of Boston, MA
    Posts
    885

    Default Vent pipe termination distance over roof?

    This is what I found on a search
    So 6" above the point where it exits the roof is OK?
    I also want to box this in to "hide" it somewhat as it will be viewable from the front

    Here is the code, CPC sect. 906.1, Each vent pipe or stack shall extend through its flashing and shall terminate vertically not less than six (6) inches above the roof nor less than one (1) foot from any vertical surface.

    And CPC sect. 906.2, Each vent shall terminate not less than ten (10) feet from, or at least three (3) feet above, any openable window, door, opening, air intake, or vent shaft, nor less than three (3) feet in every direction from any lot line, alley and street excepted.
    DIY Handyman (not 4 hire)
    I have enough to do to my own house

  2. #2
    Plunger/TurdPuncher kingsotall's Avatar
    Join Date
    Aug 2008
    Location
    Flagstaff, AZ Sitting on an upside down 5 gallon bucket next to the GO 68HD
    Posts
    1,260

    Default

    What are we venting¿
    Furnace¿
    DWV¿
    Water heater¿
    Boiler¿
    I just post cuz I like to see my avatar.

  3. #3
    Extreme DIY Homeowner Scuba_Dave's Avatar
    Join Date
    Jan 2009
    Location
    South of Boston, MA
    Posts
    885

    Default

    That would help
    It's the existing vent stack for plumbing
    There is one on each side of the house
    Other side has 2 bathrooms- 2sinks/showers/toilets
    This side has kitchen sink

    Addition has been added on this side of the house
    So the stack needs to go up higher then the new roof

    Interesting that the old location was very close to a bedroom window that opened & gable vent
    DIY Handyman (not 4 hire)
    I have enough to do to my own house

  4. #4
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,655

    Default vent

    What is REQUIRED and what is INSTALLED do not always agree.

  5. #5
    Illinois Licensed Plumber SewerRatz's Avatar
    Join Date
    Nov 2008
    Location
    Chicago, IL
    Posts
    1,705

    Default

    This is from the Illinois plumbing code. I hope some of the items in it are helpful.

    Section 890.1430 Vent Terminals
    a) Roof Extensions. Extensions of vent pipes through a roof shall be terminated at least 12 inches above such roof unless a roof is to be used for any purpose other than weather protection. If a roof is to be used for any purpose other than weather protection, the vent shall be extended at least seven (7) feet above the roof. (See Appendix K: Illustration D.)

    b) Flashings. Each vent terminal shall be made water-tight with the roof by proper flashing.

    c) Location of Vent Terminal. No vent terminal from a drainage system shall be directly beneath a door, window, overhang or other ventilating intake opening of the building, nor shall any such vent terminals be within 12 feet horizontally of such an opening unless it is at least two (2) feet above the top of such opening. (See Appendix K: Illustration E.)

    d) Extensions Outside Building. No soil, waste or vent pipe extension (except for vent terminals as provided in (a) and (c) above) shall be located on the outside of a wall of any building, but shall be installed inside the building. Vents located within an exterior wall or in a wall adjacent to an unheated space shall be protected from freezing.

    e) Flag poles. Vent terminals shall not be used for the purpose of supporting flag poles, television aerials, or similar purposes.
    Attached Images Attached Images   

  6. #6
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,410

    Default

    Note you need to take into account the pitch of the roof, as shown in one of the diagrams, to determine the height above. This would normally mean it must be more than indicated at the point of penetration unless it was a flat roof.

    You'd have to talk to the inspector about boxing it in as that would create other problems, and might mean it would still have to exit even higher. You want it above the anticipated maximum snow depth on the roof, too, so that may help dictate the height.
    Last edited by jadnashua; 05-13-2009 at 09:45 AM.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  7. #7
    Extreme DIY Homeowner Scuba_Dave's Avatar
    Join Date
    Jan 2009
    Location
    South of Boston, MA
    Posts
    885

    Default

    Thanks
    6" just didn't seem high enough
    DIY Handyman (not 4 hire)
    I have enough to do to my own house

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •