Is drip edge required?

Yes. The IRC requires drip edge flashing on all eaves and rakes of shingled roofs since the 2012 code cycle.

What profile of drip edge should I use?

Type C (also called D-style) drip edge is most common for residential roofing. It has a wider lower flange that keeps water away from the fascia better than Type A.

Drip Edge Calculator

Calculate the linear feet and pieces of drip edge flashing needed for your roof perimeter.

Ad — 728x90 — Leaderboard

Enter Your Measurements

Ad — 336x280 — Rectangle

How to Use This Calculator

1Measure all eave edges plus all rake edges.
2Enter drip edge piece length (standard 10 ft).
3Click Calculate.

Ad — 728x90 — Mid-Page

About This Material

Drip edge is a metal flashing installed at the roof eaves and rake edges to direct water away from the fascia and into the gutters. Required by code for all shingled roofs.

Installation Tips

•Install eave drip edge BEFORE underlayment, rake drip edge AFTER underlayment.
•Overlap pieces by 2 inches minimum.
•Nail every 12 inches.

Common Mistakes to Avoid

Installing rake drip edge before underlayment — underlayment must lap over rake drip edge.
Not overlapping pieces enough, allowing water infiltration.