Results 1 to 7 of 7
  1. #1
    Jeff Eastman's Avatar
    Jeff Eastman Guest

    Default Draft hoods , combustible material

    Last edited by Jeff Eastman; 12-19-2007 at 03:29 PM.
    OREP Insurance

  2. #2
    Join Date
    Mar 2007
    Location
    Fletcher, NC
    Posts
    28,032

    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/Code Consultant - Retired
    www.AskCodeMan.com

  3. #3
    Join Date
    Mar 2007
    Location
    Philadelphia PA
    Posts
    3,177

    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

  4. #4
    Join Date
    Mar 2007
    Location
    Fletcher, NC
    Posts
    28,032

    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/Code Consultant - Retired
    www.AskCodeMan.com

  5. #5
    Join Date
    Mar 2007
    Location
    Near Philly, Pa.
    Posts
    1,682

    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
    Tim Moreira Guest

    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
    Join Date
    Mar 2007
    Location
    Fletcher, NC
    Posts
    28,032

    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/Code Consultant - Retired
    www.AskCodeMan.com

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
  •