What is a consequence of missing, torn, or deteriorating shingles on a roof?

Missing, torn, or deteriorating shingles significantly compromise the integrity of a roof, allowing for the potential infiltration of water. When shingles are damaged or absent, the underlying materials, such as the roof deck and insulation, become exposed to the elements, leading to leaks and water damage. This can have serious repercussions for the building’s interior, resulting in issues such as mold growth, structural damage, and deterioration of interior finishes.

The other options do not accurately reflect the consequences of damaged shingles. Improving the overall appearance of the building is not relevant here, as missing or damaged shingles typically detract from a home's aesthetic. Similarly, damaged shingles do not contribute to increased energy efficiency; in fact, they can lead to higher energy costs due to compromised insulation. Lastly, the presence of missing or deteriorating shingles does not make the roof more durable; rather, it indicates a decline in the roof's protective qualities.