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  1. #1
    Join Date
    Mar 2007
    Location
    Oregon
    Posts
    2,365

    Default Odd markings on vinyl siding

    This siding is installed over plywood T1-11.... the picture is on the south side of the house and gets a lot of direct sun. The pattern makes me think the fasteners from the original siding or the foam siding underlayment are, for some reason, showing through. Maybe they're touching the siding and causing different temperature conditions at those points? I'm just guessing here... any ideas?

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  2. #2
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    4,170

    Default Re: Odd markings on vinyl siding

    Not a clue.

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

  3. #3
    Join Date
    Jun 2008
    Location
    Maryland
    Posts
    1,049

    Default Re: Odd markings on vinyl siding

    In a case like that I might have lifted a piece at one of the overlaps to see if it was a bleed through pattern or what might have been underneath.


  4. #4
    Join Date
    Mar 2007
    Location
    Eau Claire, WI
    Posts
    37

    Default Re: Odd markings on vinyl siding

    Matt,

    I had the exact same thing on a home where newer vinyl siding and foam underlayment had been installed. The spots were only on the south and west sides. On this house they were consistently spaced both horizontally and vertically. The buyers had a contractor come out and look at it prior to the inspection, and the contractor came up with the same conclusion you did. In some way the underlayment fasteners appeared to be causing the spots.


  5. #5

    Default Re: Odd markings on vinyl siding

    Possible past cleaning Or past bushes rub? somthing leaning against sideing. Hard to say!


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