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  1. #1
    Jack Bert's Avatar
    Jack Bert Guest

    Default Firestop Requirement

    On a recent home inspection, the chimney inspector reported that "the required firestops have not been installed." Given the drawing attached, would love to hear the opinion from any experts or knowledgeable people whether 1) Firestops are actually required by code for this condition 2) Whether firestops would actually serve any practical/beneficial purpose in this situation.

    Thanks!

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  2. #2
    Join Date
    Jul 2008
    Location
    Snowbird (this means I'm retired and migrate between locations), FL/MI
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    4,086

    Default Re: Firestop Requirement

    84" + 45" + 24". Yep and Yep. Plan is NG. You don't say what/whose manufactured chimney material. See manufacturer's instructions. 2" in a metal framed plywood framed box? It will require support and restraint as well. Hire a pro.


  3. #3
    Join Date
    Jun 2008
    Location
    Stacy, MN
    Posts
    145

    Default Re: Firestop Requirement

    Firestops are required by code at every floor level and where the flue enters the attic. Their purpose is to help prevent the spread of a fire from one floor to another and to the attic. without them a fire uses the chase as its own chimney, spreading the fire through the home much more quickly.


  4. #4
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    4,170

    Default Re: Firestop Requirement

    Quote Originally Posted by Fred Weck View Post
    Firestops are required by code at every floor level and where the flue enters the attic. Their purpose is to help prevent the spread of a fire from one floor to another and to the attic. without them a fire uses the chase as its own chimney, spreading the fire through the home much more quickly.
    Ditto

    I can't tell much about firestops from you drawing but they are important and do serve a practical function. Get it fixed.

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

  5. #5
    Glenn Mann's Avatar
    Glenn Mann Guest

    Default Re: Firestop Requirement

    Quote Originally Posted by Fred Weck View Post
    Firestops are required by code at every floor level and where the flue enters the attic. Their purpose is to help prevent the spread of a fire from one floor to another and to the attic. without them a fire uses the chase as its own chimney, spreading the fire through the home much more quickly.
    Jack, Fred is right. Flues, chases, elevator shafts, and stairways, all of which are vertical openings, act a flues during a fire. Hence, the importance of fire-stop and doors in or leading to stairwells. In a fire situation, doors are dampers.


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