Granular loss is easily seen via visual inspection but you may not even have to get on the roof to spot the signs.
Roof shingles granule loss.
Excessive granule loss in specific places can almost always be traced back to a variety of physical hazards.
How to diagnose granular loss.
Depending on the level of granule loss and age of your roof you may be able to replace the damaged shingles without having to get a new roof.
On a blistering hot summer day the temperature of asphalt shingles can approach 160f.
If the majority of the shingles on your roof are experiencing granule loss a roof replacement is likely not far behind.
Make sure to check your roof shingles for pitting or granule loss after a storm.
The process was very smooth.
This thermal expansion and contraction can lead to granule loss and cracking over time.
Because granule loss is one of the signs that a roof is getting older it is used by inspectors as a gauge of roof condition and a way to estimate additional roof life.
Prolonged exposure to hail can also loosen granules.
Roof shingle granule loss due to defective roofing product usually exposes the shingle substrate in premature bald patches and is identified by bald spots or exposed shingle substrate on roofs early in their chronological life often distributed uniformly over the roof or in areas of the roof where shingles from a particular pallet of roof shingles were installed.
Your shingles are defective.
The granules also provide uv resistance which helps keep sunlight from deteriorating your roof.
Your roof has a physical hazard causing damage.
With older roofs even marble size hail may loosen granules.
Over time the bond between the granules and asphalt deteriorates and granules will be loosened and carried away by runoff.
Imagine if a quick thunderstorm flares up and cool rain drenches the roof lowering the temperature of the shingles by up to 100 degrees in seconds.
Some other aging clues are curling at shingle corners lack of tab adhesion and broken off pieces as the shingles get more brittle with age.
Blisters are pimple like protrusions on a shingle surface.
Granule loss which is uniform across the roof is usually a result of normal weathering.
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Local roofing company sterling exteriors shares an in depth look at what causes asphalt shingle granule loss.
Granule loss indicates aging of a roof.
This way you can have a roofing expert assess the damage and give you repair or maintenance advice.
Granule loss is common after severe weather like hailstorms.
The shingle is more likely to crack bend or splinter once the granules are removed.
Animal damage tree limbs brushing the roof or constant heavy traffic to adjust the satellite dish all can lead to granule loss in only those specific areas.
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This can increase the life of your roof and decrease long term repair and replacement costs.