HAIL EXPOSURE AND DAMAGE
The process of detecting and
evaluating hail damage is subjective
at best, and often everyone involved
will offer a different assessment.
Damage can range from large,
highly visible dents and tears to
almost undetectable indentations or
invisible granule damage.
However, even small amounts of
damage can harm the surfacing material,
leading to deterioration of the shingles months later. Normally, if a shingle indicates outward
damage, the underlying components may be compromised and affected to some degree.
On damaged roofs, the hail impact may affect the embedment of the granular surfacing in the
asphalt top coating. This loosens the granules, potentially allowing the granules to separate
from the coating layer and wash off the roof. Without the granule surfacing, the asphalt top
coating is exposed to ultraviolet radiation from ordinary sunlight and will eventually deteriorate,
exposing the fiberglass substrate and creating the potential for a leak.
On severe hail damage, the fiberglass substrate may be physically broken further,
compromising the weather integrity of the shingle. Without visible damage there is no real way
to be sure how much damage shingles have encountered. Outward damage may not appear
until months or years later.In accordance with the terms of the Limited Warranty, there is no
coverage for damage caused by hail. However, should the shingles be damaged by hail, there
is continuing coverage for manufacturing defects. There is a definite distinction between a
manufacturing defect and damage caused by hail. When evaluating hail damage, look for the
Tears in the Shingle – Tears are normally worse on reproofs due to the irregular surface
support. The main areas showing damage usually include hips, ridges, sides of dragon’s
teeth, and butt edges of shingles.
Indentations in the Shingle – Indentations will be either round or half-moon shaped. Some
damage may not be visible and will require you to feel for any indentations, or to break the
bonds of the shingle and feel the backside for any irregularities.
Excessive Granule Loss – May be an indicator of possible damage. Check gutters or the
ground around the house for loose granules. Accelerated granule loss will significantly reduce
the life of the shingle.
Other Collateral Damage:
Tree or shrub damage
Dents on cars
Hailstones vary in size, shape and hardness. They can create a random pattern of dents or
depressions consisting of various sizes, shapes and depths. If you keep in mind the typical
random pattern of hail damage when evaluating a damaged roof, you should be able to
assess the situation properly. If you have any further questions regarding hail damage, please
give us a call.