How to Know That Your Shingles Are Aging

To most people, roof damage occurs due to: physical damage (for example caused by falling tree branches or hail), use of inferior materials and even poor workmanship during installation or repair. However, there are also cases where your roof is properly installed with the right materials, but just gets damaged due to age-related damage. Here are a few signs that may tell you that you are dealing with age-related damage:

Loss of Granules

Granule loss, especially at the edges of the shingle tabs, is one of the most common symptoms of shingle aging. Weathering leads to the deterioration of the chemicals holding the shingle materials together and causes individual granules to dislodge from the tabs. Granule loss can also be caused by other things such as foot traffic or hail impact. However, such losses are minimal in the early stages of aging, but get worse with time.

Surface Cracking

Another obvious sign of aging in shingles is map-like cracking on the surface of the shingles. This can also be traced to the deterioration of shingles' oils, which reduces the flexibility that the tabs had when they were new. As the shingles' brittleness increase, they cannot expand or crack as they once did under the action of temperature fluctuations. The inevitable result is surface cracking.


Blistering can be caused by a number of things including manufacturing defects. In some cases, it may result in nothing more than a cosmetic problem. However, there are also blisters stemming from aging of shingles. For example, the volatile organic chemicals and resins may release gases under the action of direct sunlight/high temperatures. The gases bubbles are then trapped beneath the surface of the shingle tables and appear as bubbles.

The blisters become problematic when they lead to loss of granules and form pits on the surface of the shingles. This exposes the shingle materials to weathering and reduces its useful life.


Shingles curl due to different reasons such as improper installation, poor attic ventilation, and aging. As roofs age, the shingles deteriorate due to actions of weather elements, which causes them to lose their elasticity. As a result, they are more affected by temperature and start curling at the edges.

The more of these symptoms you notice on your roof, the clearer it is that the roof has reached the end of its useful lifestyle. This is especially the case if the roof is nearing the end of its warranty period. You need to move fast to have your roof replaced before it starts leaking. For more information, contact Davis Roofing Co