Shingles labeled as impact resistant were purchased and put through a series of in lab tests that simulated the effects of hail impacts.
Hail roof asphalt shingle roof.
Asphalt and composition shingles hail damage.
Aside from hail impact these materials can withstand high winds of up to 110 mph.
What does hail damage look like on asphalt shingle roofs.
This article tells readers how to identify roof shingle hail damage and how to distinguish a hail damaged roof from blister rash damage foot traffic damage wind and other conditions such as shingle rash blistering cracking and granule loss associated with normal shingle aging.
Displacement of granules occurs when granules have been knocked off by the impact of hail stones hitting the roof.
Hail damage to asphalt shingles may consist of punctures tears fractures bruises or the more common displacement of granules.
Hail hits that are black in color.
Through research and testing ibhs was able to manufacture hailstones that replicated the properties of hail produced naturally.
However there are no published scientific studies to validate this statement.
Hail hits that are soft to the touch like the bruise on an apple.
Many asphalt shingle manufacturers have issued technical bulletins about hail and granule loss stating that if granules are lost from the shingle due to hail the shingle has lost life.
The loss of protective granules exposes underlying asphalt to damaging sun rays.
Asphalt and or mat that appears shiny.
How to tell the difference.
Random damage with no discernable pattern.
Hail damage compared with blister rash damage on asphalt roofing shingles.
If this is not evident look for indentations on metal flashings siding chimney caps or even skylight flashings.
A split in the shingle that is brown orange in color.
Wood shingles hail damage.
Loss of granules which may expose the roof felt.
Hailstones vary in size shape and hardness and can create a random pattern of dents or depressions.
Impact resistant shingles are recommended for homes in areas that see frequent hailstorms or other higher impact debris.
Random damage with no discernable pattern.
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.
Mineral granules from asphalt roofing may appear at the ends of downspouts.
Metal components such as metal siding air conditioner or heat pump condensers and of course automobiles left outdoors may be dented or damaged.
Granule loss to asphalt shingles as well as review the methodology to assess hail damage to an asphalt shingle roof.
Considered a class 4 product impact resistant shingles can be made of steel rubber asphalt with sbs rubber asphalt with special matting materials aluminum copper and resin.
Hail damage visible from ground level.
