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  1. #1
    Jeff Eastman's Avatar
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    Default Draft hoods , combustible material

    Last edited by Jeff Eastman; 12-19-2007 at 02:29 PM.
    OREP Home Inspector E&O Insurance

  2. #2
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    Default Re: Draft hoods , combustible material

    Quote Originally Posted by Jeff Eastman View Post
    Would you consider PVC (used for water supply) combustible material?
    PVC is not allowed for use as water supply/water distribution piping.

    See the other tread and the code references given there.

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

  3. #3
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    Default Re: Draft hoods , combustible material

    If it's cpvc, I believe it should be at least 18 inches from the hot/cold connections at the WH.

    "There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
    www.ArnoldHomeInspections.com

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    Default Re: Draft hoods , combustible material

    Quote Originally Posted by Jeff Eastman View Post
    Draft hoods need 6 inches clearance from combustible material correct?
    I believe so, yes.

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

  5. #5
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    Cool Re: Draft hoods , combustible material

    It is 6 inches, just like single walled vent connector. Even if B-vent is sitting on top of the draft hood, the clearance is from the hood itself. I find melted pipe insulation all the time.

    Jeff, the definition for non-combustible is ASTM E-136 or essentially Superman's cape. Do you think PVC can withstand a 1,382F vertical tube furnace without bursting into flames, crumbling apart or losing 50% weight? FYI, even Wonderboard cannot pass this test.

    Keep the fire in the fireplace.

  6. #6
    Tim Moreira's Avatar
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    Default Re: Draft hoods , combustible material

    So that's why your not supposed to "pull on Superman's Cape..."

    So the song goes


  7. #7
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    Default Re: Draft hoods , combustible material

    Quote Originally Posted by Bob Harper View Post
    non-combustible is ASTM E-136 or essentially Superman's cape. Do you think PVC can withstand a 1,382F vertical tube furnace without bursting into flames, crumbling apart or losing 50% weight?
    1,382 degrees F, guess that is 750 degrees C?

    I like your "Superman's cape" explanation of that test. I may steal it for use now and then.

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

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