Granule loss to asphalt shingles as well as review the methodology to assess hail damage to an asphalt shingle roof.
Hail roof asphalt shingle roof.
Metal components such as metal siding air conditioner or heat pump condensers and of course automobiles left outdoors may be dented or damaged.
Displacement of granules occurs when granules have been knocked off by the impact of hail stones hitting the roof.
Hail hits that are soft to the touch like the bruise on an apple.
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.
Impact resistant shingles are recommended for homes in areas that see frequent hailstorms or other higher impact debris.
Random damage with no discernable pattern.
Loss of granules which may expose the roof felt.
Asphalt and or mat that appears shiny.
Generally damage can be seen as indentations and or fractures on the shingle s surface.
How to tell the difference.
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.
Asphalt and composition shingles hail damage.
What does hail damage look like on asphalt shingle roofs.
However there are no published scientific studies to validate this statement.
If this is not evident look for indentations on metal flashings siding chimney caps or even skylight flashings.
The loss of protective granules exposes underlying asphalt to damaging sun rays.
Aside from hail impact these materials can withstand high winds of up to 110 mph.
Hail hits that are black in color.
Random damage with no discernable pattern.
Hail damage visible from ground level.
Wood shingles hail damage.
Hail damage to asphalt shingles may consist of punctures tears fractures bruises or the more common displacement of granules.
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.
A split in the shingle that is brown orange in color.
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.
Start by looking for evidence of hailstorm damage from the ground.
Through research and testing ibhs was able to manufacture hailstones that replicated the properties of hail produced naturally.
Shingles labeled as impact resistant were purchased and put through a series of in lab tests that simulated the effects of hail impacts.
