Drip Edge

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Drip Edge

What is Drip Edge?

A drip edge is a metal flashing installed at roof edges to direct water away from the roof deck and fascia.

Description

A drip edge is a type of metal flashing installed along the edges of a roof, typically at the eaves and rakes. Its purpose is to direct rainwater away from the roof deck, fascia, and underlying structural components, helping prevent water intrusion and deterioration.

In roofing construction, drip edges are usually made from aluminum, galvanized steel, or copper and are installed beneath roofing underlayment at the eaves and over underlayment at the rakes. The angled profile creates a clean break that allows water to drip into gutters or away from the building rather than running back under the shingles.

Drip edges are an important detail for roof durability and code compliance. Many building codes and roofing manufacturer warranties require drip edge installation as part of a complete roofing system. When properly installed, drip edges help protect roof edges from rot, reduce wind-driven rain infiltration, and improve overall roof performance.

FAQs

  • What is the purpose of a drip edge?

    A drip edge directs water away from the roof edge to protect the roof deck and fascia.

  • Where is drip edge installed on a roof?

    It is installed along eaves and rakes at the perimeter of the roof.

  • What materials are used for drip edge flashing?

    Common materials include aluminum, galvanized steel, and copper.

  • Is drip edge required by building code?

    Most modern building codes require drip edge installation on asphalt shingle roofs.

  • Can a roof be installed without a drip edge?

    While older roofs may lack drip edges, modern installations typically require them for code compliance and warranty protection.

Fun Fact

Drip edges also help prevent shingles from curling at the roof edge by providing added support and protection from moisture.

CSI Code

07 62 00

NAHB Code

760