Flashing Systems

What Is Kickout Flashing?

Kickout flashing is a flashing detail that directs roof runoff away from a wall and into the gutter at a roof-to-wall intersection.

Understanding Kickout Flashing

Kickout Flashing: Kickout flashing is a flashing detail that directs roof runoff away from a wall and into the gutter at a roof-to-wall intersection.

Published: June 4, 2026 Reviewed: June 4, 2026 Updated: June 4, 2026 By Exterior Echelon

Kickout flashing is a small but important flashing detail at the bottom of a roof-to-wall intersection. It kicks water away from the wall and toward the gutter.

Why It Matters

Missing kickout flashing can allow roof runoff to enter behind siding. This can create hidden wall damage long before a homeowner sees obvious signs.

Common Problems

Common problems include missing kickouts, undersized kickouts, water bypassing the gutter, siding installed over the flashing, and caulk used as a substitute.

Building Codes & Industry Standards

Kickout flashing should follow water-shedding principles, manufacturer instructions, and applicable exterior wall flashing requirements.

Exterior Echelon Notes

Exterior Echelon pays close attention to roof-to-wall transitions because small flashing details often decide whether a system sheds water correctly.

Kickout flashing at roof to wall intersection
Kickout flashing moves water away from the wall.

Continue learning with connected glossary definitions.

Glossary Note

This glossary is provided for general homeowner education. Actual roofing, siding, gutter, window, and exterior remodeling conditions should be evaluated by a qualified contractor before making repair, replacement, or insurance claim decisions.

Frequently Asked Questions

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