What is a consequence of deteriorating asphalt shingles?

Deteriorating asphalt shingles can lead to potential water leaks, which is a significant concern for homeowners. As shingles age, they may develop cracks, lose granules, curl, or become dislodged. These issues compromise the integrity of the roofing system, allowing water to penetrate beneath the shingles and into the underlying layers of the roof or even into the home itself. Water leaks can lead to further damage, including mold growth, wood rot, and damage to insulation and ceilings, which can become costly to repair.

In contrast, the other options do not accurately reflect the effects of roof deterioration. Increased insulation is not a consequence of shingle deterioration; instead, it may be affected by issues like improper installation or age of the entire roofing system. Deteriorating shingles also do not improve aesthetics; rather, they typically decrease a home's visual appeal as the shingles become worn and damaged. Lastly, the longevity of shingles is negatively impacted by deterioration, as this can shorten the overall lifespan of the roof. Thus, the primary consequence of deteriorating asphalt shingles is indeed the risk of potential water leaks.