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  1. #1
    Join Date
    Apr 2010
    Location
    Connecticut
    Posts
    49

    Default Torn or Split Shingles?

    Last edited by William Kievit; 08-21-2015 at 08:33 AM. Reason: Clarity
    2018 ASHI InspectionWorld

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

    Default Re: Torn or Split Shingles?

    Quote Originally Posted by William Kievit View Post
    What are the possible causes for the vertical splits in these shingles?
    aIMG_4131.JPGaIMG_4136.JPG
    Looks like the sheathing has moved and torn the shingles in one photo, maybe the same in the other photo but almost looks too clean of a split for a random tear even if along a seam.
    Any other indications of shifting roof sheathing; foundation repair, attic framing repair, etc.?

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

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

    Default Re: Torn or Split Shingles?

    A wide angle picture of the house might help. Maybe its a point in the structure where an addition connects to the original structure. Any difference in slight movement between the connected structures could cause that if the shingles are older and brittle.


  4. #4
    Join Date
    Mar 2012
    Location
    Lansdale, PA
    Posts
    876

    Default Re: Torn or Split Shingles?

    Expansion/contraction of the roof sheathing. This was a real common problems many years ago when fiberglass shingles were a relatively new thing. Don't see it much any more. I think APA has a download discussing this. There is a lot of info out there about this problem.


  5. #5
    Join Date
    Mar 2012
    Location
    Lansdale, PA
    Posts
    876

    Default Re: Torn or Split Shingles?

    Expansion/contraction of the roof sheathing. This was a real common problems many years ago when fiberglass shingles were a relatively new thing. Don't see it much any more. I think APA has a download discussing this. There is a lot of info out there about this problem.


  6. #6

    Default Re: Torn or Split Shingles?

    One other idea to consider is damage from excessive snow and ice load. Carefully check the framing members. Luck may have been one someone's side!


  7. #7
    Join Date
    Nov 2009
    Location
    Dallas, TX
    Posts
    89

    Default Re: Torn or Split Shingles?

    Check out haageducation.com.


  8. #8

    Default Re: Torn or Split Shingles?

    Quote Originally Posted by Jim Luttrall View Post
    Looks like the sheathing has moved and torn the shingles in one photo, maybe the same in the other photo but almost looks too clean of a split for a random tear even if along a seam.
    Any other indications of shifting roof sheathing; foundation repair, attic framing repair, etc.?
    Jim, this looks like what happens when the decking is not staggered, resulting in a continuous vertical decking joint. When this is observed at only one location it usually indicates a tie in to an addition. When it occurs at more than one location it may indicate decking installed over the entire affected area without staggered joints, in which case the splits will occur either 4' or 8' apart.

    Don Putnam
    www.roofconsulting.com

    - - - Updated - - -

    Quote Originally Posted by William Kievit View Post
    What are the possible causes for the vertical splits in these shingles?
    aIMG_4131.JPGaIMG_4136.JPG
    Sorry, I meant to address my previous post to you, William.

    Don Putnam
    www.roofconsulting.com


  9. #9
    Join Date
    Sep 2013
    Location
    Ontario
    Posts
    3

    Default Re: Torn or Split Shingles?

    Could be movement of substrate under the shingles. Depending upon age of the house, is there old planking under the shingles? Expansion and contraction underneath the shingles could have stressed them vertically over 10 years or so like this.


  10. #10
    Join Date
    Mar 2007
    Location
    Bradley Illinois
    Posts
    29

    Default Re: Torn or Split Shingles?

    GAF Woodline and Timberline had a manufacturing defect and these appear to be part of that warranty issue though the Woodline grade were phased out in the mid to late 90's.


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