1. 1
    Valley Nail Spacing Incorrect

    Some valley nails are inside of 6 inches, this appears to be a leak potential.

    Click the link below to see the Advisory.

    GAF Steep Slope Technical Advisory

    Valley Nail Spacing Incorrect

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  2. 2
    Improper Nail Pattern On Entire Roof

    Shingle nail patterns are bad.  They are too close to the union.

    Improper Nail Pattern On Entire Roof

     

    This is a major problem and will cause leaks in the roof.  The nail pattern is not properly spaced over the entire roof.

    Technical PDF From GAF On Improper Driven Nails

    Proper nail patterns from GAD Pro Field Guide:

     

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