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  1. #1

    Default Roof installation


    Inspected a home today & the shingle end butt joints or end joints are excessivly close together. Will this be a chance for potential leakage?

    The ridge cap shingles are incorrect as well?

    Any insight would be appreciated.

    Thanks in advance

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  2. #2
    Join Date
    Feb 2008
    Chicago IL

    Default Re: Roof installation

    A couple thoughts,
    - On the butt joints I would just include an installation pdf from the Manufacturer with the report. They typically show required off-sets and other details. Stops any arguing. You don't necessarily 'have' to know the exact manufacturer but it does help. Just make sure the install guide is for an architectural shingle.
    - They make a matching cap shingle for Arch shingles. The problem with using the regular Arch shingles on the ridge like that is the layers tend to lift, crack come apart and break. I've seen them really deteriorated in 1-2 years.
    Hope that helps.
    "The Code is not a ceiling to reach but a floor to work up from"

  3. #3
    Join Date
    Mar 2007
    Orlando, FL

    Default Re: Roof installation

    Although it varies, most roofing manufacturer's will specify these details.

    For example:

    Certain Teed (for most of it's laminated shingle line) lists the minimum distance between joints as 3.5 inches.

    Install Guide.


  4. #4

    Default Re: Roof installation

    Thank you...Very helpful!
    I really appreciate it!

  5. #5
    Join Date
    Feb 2009
    Southern Vancouver Island

    Default Re: Roof installation

    That work is completely unacceptable. When they fail to stagger the rows like that, it shows they were simply too lazy to move across the roof with their bundles and their stinkin nail guns. Then too ignorant to purchase the correct ridge caps. They most likely screwed up the invisible areas as well. Call for it to be torn off.

    John Kogel, RHI, BC HI Lic #47455


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