Drip edge is easy to overlook because only a small part of it is visible. But this metal flashing helps manage water at roof eaves and rake edges, where runoff can otherwise reach the roof deck, fascia or the gap behind a gutter.

What Drip Edge Is

Drip edge is metal flashing installed along roof edges. It extends over the roof edge and down so water is encouraged to leave the roof system instead of curling back toward exposed wood.

Why Eaves and Rakes Need Protection

Roof edges face repeated runoff, wind-driven rain and, in some climates, ice.

How It Works With Gutters

At an eave, the drip edge and gutter should work together so runoff enters the gutter rather than slipping behind it.

Signs the Drip Edge May Be Damaged or Missing

Possible clues include exposed roof-deck edges, peeling or swollen fascia, water streaks behind gutters, sections of metal that are bent upward, or gaps where the edge flashing should be continuous.

Do Not Judge the Detail From the Ground Alone

Some parts of the flashing are intentionally hidden under roofing materials. A roofer can confirm whether the assembly is correct.

When Roof Replacement Is the Best Time to Correct It

If a roof is being replaced, the edge detail is accessible and can be integrated with the underlayment and new roofing.

Our Practical Take

Think of drip edge as part of the roof’s drainage path. Gutters collect water after it leaves the roof; drip edge helps water make that transition without reaching vulnerable roof-edge materials.

Related Reading

Read Gutters Overflowing in Heavy Rain?, Roof Valleys, and more Roofing guides.

Sources

U.S. Department of Energy — Drip Edge at Roof Eaves and Rakes