As roofs age the bond between the granules and the asphalt shingle become looser allowing the granules to fall off.
Granular loss on roof.
Severe weather such as heavy rain hail or strong winds can also knock your granules loose.
These valley form a v and may have overlapping shingles.
Because water runs down these valleys on a regular basis it is a common place for erosion of.
However other things can cause this too such as tremendous rains hail branches strong wind storms and exceptionally intense hot and sunny days.
It s completely normal to lose some of the granular textures on the roof and it doesn t necessarily mean you need a roof repair or shingle replacement.
Granule loss indicates aging of a roof.
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.
Normal granule loss on new asphalt roofs.
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Normal defective product storm damage foot traffic etc.
Though age is the most common cause of granule loss there are several other factors that can contribute to the premature loss of this protective coating.
As your roof ages it s completely normal to lose some granular textures.
Photos and text guide diagnosis of asphalt roof failures causes effects of loss of protective mineral granules from roof shingles description of different causes of roof shingle granule loss.
Roof valleys are particularly vulnerable to granular loss.
With older roofs even marble size hail may loosen granules.
Aging roofs can experience shingle granule loss.
Over time the bond between the granules and asphalt deteriorates and granules will be loosened and carried away by runoff.
Causes effects of loss of protective mineral granules from roof shingles asphalt roof shingle defects.
Since the granules on shingles are exposed to the elements on a regular basis there s no way all of them will stay stuck to the shingles themselves.
Granule loss is the leading instigator of roof replacements as it s the heaviest and most prevalent symptom of a very aged roof.
What causes granular loss.
Roof valleys are usually located where the main part of the house meets the garage roof or an addition to the home.
However other things can cause this too such as tremendous rains hail branches strong wind storms and exceptionally intense hot and sunny days.
Granule loss which is uniform across the roof is usually a result of normal weathering.
Granule loss is the leading instigator of roof replacements as it s the heaviest and most prevalent symptom of a very aged roof.
A new roof typically has some excess granules which it will shed during installation and over a short period after that.
Prolonged exposure to hail can also loosen granules.