How do I properly install drip edge on a roof to ensure proper water drainage and protection?

To properly install drip edge on a roof for effective water drainage and protection, first, position the drip edge along the edge of the roof with the flange facing outward. Secure it in place with nails or screws, making sure it overhangs the edge slightly. Ensure the drip edge is sloped away from the roof to direct water away from the structure. Finally, seal any gaps or joints with roofing cement to prevent water infiltration.