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Drip edges are made of various plastics and metals, which are both acceptable under most building codes so long as the metals are corrosion-resistant or galvanized.

  • Aluminum:A common material for drip edges, aluminum isn’t as strong as steel. It doesn’t corrode and is often sold in colors that match the rest of the home exactly.
  • Galvanized steel:Drip edges are designed to be in contact with water; so, if they are made of steel, they need to be galvanized to prevent rust. Minimum 24-gauge steel is preferable so that the drip edge can withstand strong winds.
  • Copper:Copper is a sturdy metal that gives a roof a unique look. When used as a drip edge, it should be a minimum of 0.69 mm or 20 ounces.

While plastic, vinyl and fiberglass drip edges may also be available in your area, these materials are best suited for use in nonroofing applications, such as above doors and windows.

Drip Edge Profile Types

There are three basic profiles of drip edge flashing, but each goes by more than one name, which can be confusing.

  • Type C:This is the classic “L”-shaped drip edge, sometimes called “L style.” This drip edge is bent to a 90-degree angle and has a lower flange at the bottom.
  • Type D:This profile of drip edge is shaped like a “T,” with a lower flange at the bottom. Sometimes it is called drip metal, “D-metal” or “T style.” The Asphalt Roofing Manufacturers Association (ARMA) prefers this drip edge profile to Type C because it keeps the water further away from the fascia. However, Type C is still acceptable according to most building codes.
  • Type F:This is an extended drip edge that has a longer leading edge, which is useful when installing new drip edges over existing shingles or on rake edges. This profile is frequently called “F style” or “gutter apron.”Type C: This is the classic “L”-shaped drip edge, sometimes called “L style.”

    Type D: This profile of drip edge is shaped like a “T,” with a lower flange at the bottom.


    Roof drip edges are generally sold in 10.5-foot lengths, but they are occasionally sold in 8-foot lengths or smaller. The length of the overhang itself commonly ranges from 2 to 5 inches. You may find other styles and sizes of drip edges in the store, including “J-channel” drip edges, but these are intended for windows, doors and other applications. You may also find vented drip edges, but the National Roofing Contractors Association (NRCA) does not recommend using them on roofs.