What is the primary function of a "drip edge" in roofing?

The primary function of a drip edge in roofing is to direct water runoff away from the roof edge. This essential component helps manage water flow, ensuring that it moves away from the fascia and underlying structures. By channeling water away, the drip edge prevents it from pooling at the edge or seeping into the roofing material, which could potentially lead to leaks and water damage over time.

Additionally, the design of the drip edge allows the water to flow off the roof and onto the gutters or ground, minimizing the risk of moisture-related issues. While the other options may represent benefits or characteristics of roofing components, they do not capture the core purpose of the drip edge, which is fundamentally about managing and directing water to protect the integrity of the roof and the home.