Install the roof edge starting on a corner of the roof. The tapered edge of the eave drip should run along the fascia board.
Nail the eave drip into place using 1 1/4-inch galvanized roofing nails and a hammer to secure it to the roof. Allow the eave drip to overhang the roof edge about 3/4 inch to allow for the installation of gutters if applicable. This will allow gutters to tuck behind the eave drip to catch the runoff.
Overlap adjoining pieces of eave drip about 3 inches and press together firmly before nailing for longer runs along the roof edge.
Install the eave drip around the entire edge of the roof cutting to length when necessary using a pair of tin snips and a tape measure.