How do you identify a manufacturers defect on a composition/asphalt shingles?

Here are some of the composition shingle defects commonly seen in the field:

Degranulation/Granule Loss
Craze Cracking


Any of the above defects can be caused by and/or accelerated due to installation errors including inadequate ventilation of the attic. Shingle damage from wind and hail needs to be distinguished from a manufacturers defect and faulty workmanship to prevent a homeowner from filing an insurance claim when the real issue is a manufacturer’s defect.


Rhoden Roofing’s specialists are all trained by HAAG Engineering to make the determination between a manufacturer’s defect and hail/wind damage.  This gives us a competitive advantage because HAAG Engineering determines the industry standard for what constitutes hail damage versus a manufacturers defect. 

John Ludwig

John began his roofing career in the roofing industry working at ABC Supply Co before joining Rhoden Roofing in 2010.

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