What is the primary purpose of a drip edge?

The primary purpose of a drip edge is to direct water away from the fascia and into the gutter. A drip edge is a metal flashing installed along the eaves and rakes of a roof, which helps to manage the flow of water effectively. When water runs off the roof, the drip edge ensures that it does not run beneath the roof shingles or damage the underlying materials. This is crucial for preventing water infiltration into the fascia, which can lead to rot, mold, and other moisture-related issues. Additionally, by directing the water straight into the gutters, the drip edge contributes to a well-functioning drainage system that protects the structure of the building and minimizes the risk of water-related damage.

While improving the visual appearance of the roof edge and securing shingles at the edge may be secondary benefits, they do not represent the main function of a drip edge. Moreover, providing additional insulation is not a role that a drip edge plays in roofing. Its primary focus remains on effective water management.