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  1. #1
    Join Date
    Mar 2007
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    Ft. Myers, FL
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    363

    Default Does this need a collar

    This flue pipe from the furnace and water heater going through the ceiling of this utility room with living space above. It has the required 1" clearance (except for the insulation.) Is this ok or should it have some sort of collar between the flue pipe and the drywall?

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    Paul Kondzich
    Ft. Myers, FL.

  2. #2
    Join Date
    Mar 2007
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    Ormond Beach, Florida
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    Default Re: Does this need a collar

    It needs a proper firestop support made by the manufacturer of that vent material, or one made to their specifications (some show a site built firestop support in their installation instructions).

    At best, you will usually see a collar around it closing the opening off, 'at best' does not mean it is correct, though.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  3. #3
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    Mar 2007
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    Near Philly, Pa.
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    1,633

    Cool Re: Does this need a collar

    Jerry is correct. It also needs support. Look at the clearance btw the single walled connector and the combustible ceiling. There should be 6" btw the bead on the B-vent and the ceiling. There must be an attic insulation shield above the ceiling. Any more pics?
    Bob

    Keep the fire in the fireplace.

  4. #4
    Join Date
    Oct 2003
    Location
    Rockwall Texas
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    4,517

    Default Re: Does this need a collar

    I see a many of the collars but as Jerry said many are not installed properly. If you look in the attic above them, you'll more than likely find the flue in contact with the gypsum board as in the picture below.

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  5. #5
    Join Date
    Mar 2007
    Location
    Ft. Myers, FL
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    Default Re: Does this need a collar

    Bob, either I am not understanding you , or more likely the picture is misleading. Picture the fluepipe and ceiling at 90 degree angle from each other. The fluepipe is going straight up through the ceiling. The single walled connector is at least 1 ft. below the ceiling. So as it is, it just needs the firestop collar, and insulation shield above, I assume. Thanks

    Paul Kondzich
    Ft. Myers, FL.

  6. #6
    Join Date
    Mar 2007
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    Ormond Beach, Florida
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    Default Re: Does this need a collar

    Quote Originally Posted by Rick Hurst View Post
    I see a many of the collars but as Jerry said many are not installed properly. If you look in the attic above them, you'll more than likely find the flue in contact with the gypsum board as in the picture below.
    Rick,

    That's because ...

    Quote Originally Posted by Jerry Peck View Post
    It needs a proper firestop support made by the manufacturer of that vent material, or one made to their specifications (some show a site built firestop support in their installation instructions).
    THAT is what is missing.

    At best, you will usually see a collar around it closing the opening off, 'at best' does not mean it is correct, though.
    And THAT (and what you are describing) is the wrong way to do it.

    The collar is only there to ... 'make it look purty'. No more, and maybe even less.

    The collar *is not* a proper firestop or draftstop - its only purpose is 'purtyness'.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

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