Jerry Lozier Posted April 22, 2012 Report Share Posted April 22, 2012 I see 'spider' cracking on Pabco Horizon shingles from time to time, these 3 tab are different. Not a real old roof and all are stuck down good. Weird cause it looks like they continue from one shingle to the next. Could it be something from possible high heat in attic? Sufficient gable vents, no soffit venting???? Click to Enlarge 97.71 KB Link to comment Share on other sites More sharing options...
Mike Lamb Posted April 22, 2012 Report Share Posted April 22, 2012 It's likely a shingle defect. Thermal splitting. http://inspectapedia.com/roof/SplittingShingles.htm Link to comment Share on other sites More sharing options...
John Kogel Posted April 22, 2012 Report Share Posted April 22, 2012 The cracks correspond with the top edges of the shingles two rows down. Link to comment Share on other sites More sharing options...
Jerry Lozier Posted April 22, 2012 Author Report Share Posted April 22, 2012 thanks guys Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now