What Is a Drip Cap Flashing?

Family Handyman

What Is a Drip Cap Flashing?

Drip cap is an L-shaped flashing that goes over windows and doors after they’re installed (but before siding is installed) to prevent moisture from seeping in from above. One leg of the “L” goes over the window or door brick mold, while the other lies behind the siding that will go above. Some windows and doors that have uni-body or molded frames have their own form of built-in drip cap and don’t require any additional drip cap flashing.

Drip cap flashing is inexpensive, goes on easily and can save you—and your window—a world of moisture trouble further down the road.