What is drip edge on roof?

A drip edge is a metal flashing installed along the edges of a roof to help direct water away from the roof and into the gutters. It is typically installed under the roofing material and over the roof decking, and is angled to prevent water from seeping into the underlying structure of the roof.

Drip edges come in various materials, such as aluminum, galvanized steel, or PVC, and are available in different sizes and profiles to accommodate different roof styles and pitches. They are usually installed along the eaves and rakes of a roof, and are important for protecting the roof from water damage, preventing rot and decay, and improving the overall longevity of the roof.

Properly installed drip edges can also help prevent ice dams from forming on the roof in cold climates, as they provide a continuous water barrier along the edges of the roof. It is important to ensure that the drip edge is correctly installed and overlaps with the gutter system to effectively divert water away from the roof and building structure.