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Thread: Cedar Shakes

  1. #1
    Join Date
    Feb 2008
    Location
    Sioux City, Iowa
    Posts
    48

    Default Cedar Shakes

    I looked at a house this morning that has two layers of roofing. The visible layer is a cedar shake roof and the layer under the cedar is an asphalt shingle. I have never seen this type of application and I am curious as to whether or not it is a proper install.

    My gut feeling is no but can't seem to find anything on it. i am trying to complete the report and need to make a decision soon.

    Thanks for your help.


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  2. #2
    Join Date
    Feb 2008
    Location
    Caledon, Ontario
    Posts
    5,005

    Default Re: Cedar Shakes

    Someone was trying to save money by not stripping the asphalt shingles off and paying for disposal fee.

    The wood shingles/shakes will have their life shortened due to being applied on a solid backing. Just as wood shingle life is shortened by placement on plywood sheathing as opposed to space plank which allows the shingles to dry.

    In my opinion its not the best way to install an expensive product like wood shingles.


  3. #3
    Join Date
    Mar 2007
    Location
    Lake Barrington, IL
    Posts
    1,363

    Default Re: Cedar Shakes

    Nothing wrong with writing non-professional / unorthodox installation. That being the case there's nothing wrong with recommending a qualified roofer review and correct as necessary. Let someone else put their neck in the noose if they want to say it's ok.

    Eric Barker, ACI
    Lake Barrington, IL

  4. #4
    Join Date
    Feb 2009
    Location
    Southern Vancouver Island
    Posts
    4,549

    Default Re: Cedar Shakes

    Cedar shingles or shakes nailed flat to any solid surface is wrong, what Raymond said. If they laid open strapping on top of the asphalt shingles, then the roof will last longer, so not as bad.

    BTW, be sure they are actually split cedar to call them shakes. I've mistaken badly weathered shingles for shakes until I got up close to them. Shingles of course have a shorter lifespan because of the sawn surface.

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

  5. #5
    Join Date
    Feb 2008
    Location
    Sioux City, Iowa
    Posts
    48

    Default Re: Cedar Shakes

    Thanks for the help. I advised that the installation was uncommon and that they should have a licensed roofing contractor examine the installation.


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