Which of the following is considered a ventilation problem for asphalt shingles?

Excessive heat buildup is identified as a ventilation problem for asphalt shingles due to its significant impact on the lifespan and effectiveness of the roofing materials. When there is insufficient ventilation in the attic or roof space, trapped heat can increase temperatures significantly. Elevated temperatures can lead to thermal cycling, which may cause shingles to age prematurely, warp, or crack.

Inadequate ventilation can interfere with the proper functioning of the roofing system, resulting in an environment where moisture can accumulate, leading to potential issues like mold growth or condensation. Adequate ventilation allows for a balanced air circulation that helps regulate temperature and prevent excessive heat buildup, thereby protecting the shingles and prolonging the roof's overall lifespan.

Recognizing and addressing excessive heat buildup is vital for maintaining the roofing system's integrity and performance, making it critical in the context of asphalt shingle roofs.