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Thread: Vapor Barrier

  1. #1
    Join Date
    Dec 2010
    Location
    Illinois
    Posts
    64

    Default Vapor Barrier

    Have a buddy who is building a home in country and very rustic. He is using old barn wood AMD used corrugatetal on interior walls. He is asking me if a vapor barrier is required. He has installed unfaced 6 inch insulation and has it nicely house wrapped. At first I thought yes because of the air and vapor that can pass through the openings in the rustic materials but then I started to think that it shouldn't get trapped in the wall cavity either. Thoughts?

    Inspection Referral
    E.D.S
    Home Inspections
    Lic.#450.010534

  2. #2
    Join Date
    Mar 2007
    Location
    Orlando, FL
    Posts
    1,592

    Default Re: Vapor Barrier

    Lots of info about vapor barriers, and vapor transmission through buildings.

    Q&A: Is a Vapor Barrier Necessary? - JLC Online

    BSD-106: Understanding Vapor Barriers ? Building Science Information


  3. #3
    Join Date
    Feb 2009
    Location
    Southern Vancouver Island
    Posts
    4,607

    Default Re: Vapor Barrier

    In my climate, always always a vapour barrier behind the interior wallboard.
    The housewrap is designed to breathe just enogh to let any stray moisture out.

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

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