Drip Edge: Why Carriers Leave It Off and How to Get It Back

Drip edge is a code-required component on virtually every shingle re-roof in the United States. It's in the International Building Code. It's in the manufacturer installation instructions. And carriers leave it off their estimates constantly.

What Drip Edge Is

Drip edge is a metal flashing installed at the eave and rake edges of a roof. Its function is to direct water away from the fascia board and into the gutter, preventing water infiltration at the roof edge. It goes under the ice and water shield at the eave and over it at the rake.

Without drip edge, water can wick back under the shingles and into the decking — exactly what roofing systems are designed to prevent.

The Code Requirement

The International Residential Code (IRC) Section R905.2.8.5 requires drip edge on all asphalt shingle roofs:

"A drip edge shall be provided at eaves and rakes of shingle roofs. Adjacent pieces of drip edge shall be overlapped a minimum of 2 inches. Drip edges shall extend a minimum of 1/4 inch below the roof sheathing and extend up the roof deck a minimum of 2 inches."

Most shingle manufacturers — GAF, CertainTeed, Owens Corning, Atlas — also require drip edge in their installation instructions as a condition of the product warranty. A roof installed without it is non-conforming to manufacturer requirements.

Why Carriers Omit It

Carriers omit drip edge for a few reasons:

It was on the original roof and is assumed to be "reusable" — even when it's damaged, corroded, or undersized
The adjuster didn't walk the full perimeter or didn't include it in the scope
It's a small dollar amount per line item, so it goes unnoticed until supplemented

The drip edge argument is strong because it's code. It's not opinion or interpretation — it's a minimum requirement. When a carrier omits a code-required component from a full re-roof scope, the supplement writes itself.

The Xactimate Line Items

Drip edge has two separate line items in Xactimate — one for installation at the eave, one for the rake. They're commonly supplemented together:

RFG DRIP E — Drip edge, eave (measured in LF)
RFG DRIP R — Drip edge, rake (measured in LF)

Quantities are derived from the roof measurement report: eave linear footage from the EagleView or Hover report, rake from the same. If you don't have a measurement report, calculate from the roof dimensions in the carrier estimate.

The F9 Note

When supplementing drip edge, include an F9 note on the line item that cites the code:

IRC R905.2.8.5 requires drip edge at eaves and rakes on all asphalt shingle installations. Manufacturer installation instructions (GAF/CertainTeed/OC) also require drip edge as a condition of product warranty. Drip edge was not included in the carrier estimate. Adding per code requirement and manufacturer specification.

That note does three things: cites the code, cites the manufacturer requirement, and documents the gap. It's hard to deny in writing.

Supporting Documentation

The strongest submission includes:

A photo of the installed drip edge (during-build photo at the eave)
The measurement report showing total eave and rake footage
The manufacturer installation instructions referencing drip edge (one page is enough)

Bottom line

Drip edge is code. When a carrier does a full re-roof scope and leaves out a code-required component, that's a supplement — and a straightforward one. Cite IRC R905.2.8.5, add the two Xactimate line items with quantities from your measurement report, attach a during-build photo, and submit. Most carriers add it on the first request.