Kickout Flashing: The Unsung Hero of Water Management


When it comes to maintaining a durable and water-tight home, paying attention to the small details can make a world of difference. One often-overlooked component that plays a vital role in preventing water damage is kickout flashing. In this blog post, we will explore the importance of kickout flashing, its functions, and why it should be an essential part of every home’s exterior system.

Understanding Kickout Flashing:

Kickout flashing, also referred to as diverter flashing, is a specialized type of flashing installed at the junction where a sloped roof intersects with a vertical wall. Its primary purpose is to redirect water away from the wall and prevent it from infiltrating the building envelope.

Functions of Kickout Flashing:

1. Water Diversion: The main function of kickout flashing is to divert water away from vulnerable areas, such as sidewalls, windows, and doors. By directing water into the gutter system, kickout flashing helps prevent water intrusion, which can lead to costly damage and repairs.

2. Wall Protection: Without kickout flashing, water from the roof’s surface can cascade down the wall, causing it to seep into the building’s structure. Over time, this can result in rotting of wall studs, sheathing, and insulation, compromising the structural integrity of your home.

3. Preventing Moisture-Related Problems: Effective kickout flashing ensures that water is properly channeled away from the wall, reducing the risk of moisture-related issues. By preventing water infiltration, kickout flashing helps maintain the appearance of your home’s exterior, prevents peeling paint, and inhibits the growth of mold and mildew.

The Importance of Proper Installation:

Installing kickout flashing correctly is crucial for its optimal performance. It is recommended to hire a professional contractor or an experienced roofer with expertise in kickout flashing installation. They will have the knowledge and skills to determine the correct placement, angle, and size of the kickout flashing, ensuring that it effectively redirects water away from the wall.

Maintenance and Inspection:

To ensure the longevity and effectiveness of kickout flashing, regular maintenance and inspection are necessary. Here are some key maintenance tips:

1. Clear Debris: Regularly clean gutters and downspouts to prevent blockages and maintain unobstructed water flow.

2. Check for Damage: Inspect kickout flashing for any signs of damage, such as cracks, gaps, or corrosion. Promptly address any issues to prevent water infiltration.

3. Seal Gaps: Over time, caulk or sealant used around the kickout flashing may deteriorate. Check for any gaps or separation between the flashing and the wall, and reseal as needed using a weather-resistant sealant.


While often overlooked, kickout flashing is an essential component of a well-designed water management system for your home. By effectively redirecting water away from vulnerable areas, kickout flashing plays a vital role in preventing water damage, maintaining the structural integrity of your home, and promoting a healthy living environment. Invest in professional installation, perform regular maintenance, and appreciate the unsung hero that is kickout flashing, ensuring your home stays protected for years to come.

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