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  1. #1
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    Aug 2010
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    Default new code understanding

    9.10.15.5. Construction of Exposing Building Face of Houses.......

    .........

    "b) the cladding shall
    i) conform to Subsection 9.27.11.,
    pg. 13
    ii) be installed without furring members over gypsum sheathing at least 12.7 mm thick or over masonry,
    iii) have a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1.(2), and
    iv) not exceed 2 mm in thickness exclusive of fasteners, joints and local reinforcements, or......"

    This is BC new code. Please help me understand "furring members"; "gypsum sheathing"; also iv.

    Thank you

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  2. #2
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    Aug 2007
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    Default Re: new code understanding

    It Might have Choked Artie But it ain't gone'a choke Stymie! Our Gang " The Pooch " (1932)
    Billy J. Stephens HI Service Memphis TN.

  3. #3
    Join Date
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    Guelph,Ontario
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    Default Re: new code understanding

    Furring members are a type of strapping,1x2,1x3,2x4, etc,gypsum,is drywall


  4. #4
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    Default Re: new code understanding

    Thank you.

    normally the clading is on osb or plywood sheathing. Why mentioned gypsum? could interior drywall be under the code requirement?

    what is the meaning that " not exceed 2 mm in thickness exclusive of fasteners, joints and local reinforcements."


  5. #5
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    Default Re: new code understanding

    Quote Originally Posted by Peter Louis View Post
    Thank you.

    normally the clading is on osb or plywood sheathing. Why mentioned gypsum? could interior drywall be under the code requirement?

    what is the meaning that " not exceed 2 mm in thickness exclusive of fasteners, joints and local reinforcements."
    Gypsum is mentioned because it is fire retardant.

    iii) have a flame-spread rating not greater than 25 when tested in accordance with Sentence 3.1.12.1

    The cladding, ( exterior covering ) has a thickness of no more than 2mm thick. This 2mm thickness does not include the method to adhere it to the dwelling such as screws,nails or other hardware.

    It Might have Choked Artie But it ain't gone'a choke Stymie! Our Gang " The Pooch " (1932)
    Billy J. Stephens HI Service Memphis TN.

  6. #6
    Join Date
    Feb 2009
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    Southern Vancouver Island
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    Default Re: new code understanding

    New gypsum products are out there. Exterior sheathing, yes.
    http://www.dryvit.com/fileshare/doc/...ion/duk614.pdf

    Supposedly waterproof, and it doesn't burn. I haven't seen any yet. Maybe never will, but they've put it in the code book.

    I'm not sure of the context for the 2 mm cladding statement. Not enough info. Could even be a typo.

    Typo - error made while typing 1000's of pages of text.

    John Kogel, RHI, BC HI Lic #47455
    www.allsafehome.ca

  7. #7
    Join Date
    Aug 2007
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    Default Re: new code understanding

    Quote Originally Posted by John Kogel View Post

    I'm not sure of the context for the 2 mm cladding statement. Not enough info. Could even be a typo.
    .
    Yeah,
    2cm sounds more correct.

    It Might have Choked Artie But it ain't gone'a choke Stymie! Our Gang " The Pooch " (1932)
    Billy J. Stephens HI Service Memphis TN.

  8. #8
    Join Date
    Aug 2010
    Location
    BC Canada
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    Default Re: new code understanding

    would plywood sheathing + vinyl siding fail under the code?

    2mm clading: vinyl, metal panel?


  9. #9
    Join Date
    Feb 2008
    Location
    Chicago IL
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    Default Re: new code understanding

    Around here the exterior grade drywall has had black paper on it all the way around. This has been around for a number of years now. Supposedly there is also a new version but I haven't had the need to look into it.
    Mainly used to meet fire separation along the exterior when people are doing rehabs, additions or dormers in the City. A lot of our older properties only have 3' gangways in between the buildings. So doing anything to help with fire separation helps.
    A lot of contractors have been using greenboard instead. The real scummy ones just use whiteboard. The black board cost more. Their theory is 'we are going to cover it up anyway'. Nice thought but it doesn't take reality into account.

    www.aic-chicago.com
    773/844-4AIC
    "The Code is not a ceiling to reach but a floor to work up from"

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