View more pictures of roof hail damage.
Hail damage to asphalt roof shingles haag.
Composition roofing also known as asphalt shingle roofing works well in a variety of climates and is relatively inexpensive.
The authors have inspected thousands of asphalt shingle roofs and found that damage inspectors frequently mistake various shingle anomalies such as foot scuffs adhesive spots etc as hail damage.
As you can see on the first image below the surface granules have been knocked off of the shingle very clearly.
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Base mat materials are either paper organic or glass fiber inorganic.
Hail damage to asphalt roof shingles pdf timothy p.
Morrison haag engineering dallas tx.
The rest of the pictures make it much harder to notice that the shingle has sustained hail damage.
The results of our ten year study on granule loss to asphalt shingles as well as review the methodology to assess hail damage to an asphalt shingle roof.
Functional hail damage to composite asphalt shingles industry standards and studies have defined functional hail damage to asphalt shingle roofs as a diminution of the water shedding ability of the shingle or the reduction in the long term service life of the shingle.
Are these small round scoured areas hail damage.
Frequently misidentified as hail damage and explain how to differentiate between intentional and unintentional roof damage.
It takes a trained eye to spot hail damage to roof shingles.
By scott morrison p e director of haag s research testing lab.
Hail strikes granule removal.
Hail damage identification examples questions answers question.
It is the most common residential roofing material used in the united states.
For a professional investigation of hail damage to asphalt shingles see.
Hail caused damage to an asphalt shingle in roofing is rup ture of the reinforcing mat or displacement of granules suf ficient to expose underlying bitumen 14.
This post is part 5a of shingle damage evaluation and follows characteristics of aging part 4e.
The former is a penetration of the shingle that in effect removes a ply of roofing and has the potential for water to reach the fasten.