Copper drip edge installed correctly on a curved "eyebrow" roof dormer.  This drip edging is properly fabricated with professional sheet metal roofing tools to follow the curves of the dormer roof and trim.

Drip edge installed on a curved "eyebrow" roof dormer by average roofers. A straight length of T style drip edge metal cut haphazardly gives poor results.

Drip edge, installed correctly, sits on top of the ice and water shield at the eaves and over the ice and water shield and tar paper / underlayment at the roof rake.

Installing pre-made drip edge flashing at the eaves often leaves a gap under the drip edge and little room to nail the flashing. This results in little support for the shingles and often a raised edge.

Installing drip edge directly over the gutter board without ice and water shield allows water from ice dams to work it's way under and into the roof soffit.

Eave drip edge installed correctly over ice and water shield, and under shingle underlayment.  The metal has been bent to accomodate the pitch of the roof.

The rake drip edge cut and bent around the eave flashing for a simple finish.

Roof flashing drip edge installs over the rain gutter to prevent water from dripping between the gutter and the fascia board.