What is a common issue experienced with aging asphalt shingles?

Aging asphalt shingles often experience granule loss and an increased susceptibility to staining. Over time, the granules that protect the shingles from UV rays and other environmental factors can wear away due to exposure to sun, wind, and rain. This granule loss not only diminishes the aesthetic appeal of the roof but also increases its vulnerability to sun damage, leading to accelerated degradation of the underlying materials.

Additionally, as shingles age, they can become more prone to staining from algae, mold, and mildew, particularly in climates that encourage such growth. The combination of these issues points to the importance of regular inspections and maintenance to prolong the life of a roof and maintain its protective features.

In contrast, the other options suggest improvements or advantages not typically associated with aging asphalt shingles. Aging does not enhance flexibility or structural integrity; instead, it often leads to brittleness and cracking. Aging shingles do not improve in lifespan compared to newer roofing materials; they typically have a finite life that decreases as they age.