On asphalt shingle roofs, what is said about valleys and hips regarding flashing?

On asphalt shingle roofs, it is essential to understand the purpose of flashing at valleys and hips. Valleys are critical areas where water runoff from the roof converges, making them particularly vulnerable to water penetration. Flashing in these areas is necessary to direct the flow of water away from the seams and prevent leaks.

In contrast, hips do not typically require the same level of attention as valleys concerning flashing because they have a different design and water flow dynamic. Hips are the external angle formed where two roof slopes meet, and while they benefit from underlayment, they are less prone to water pooling compared to valleys.

Thus, it is accurate to state that only valleys need to be flashed to ensure proper protection against water intrusion, which is why this option is the most fitting in the context of asphalt shingle roofing practices. This understanding emphasizes the specific needs and construction practices associated with different roof features.