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Understanding the Importance of Kickout Flashing in Home Maintenance

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When it comes to maintaining a home, every detail matters, especially those that protect the structure from water damage. One such critical detail is kickout flashing, a small but mighty component in a home’s roofing system.

What is Kickout Flashing?

Kickout flashing is a piece of metal or plastic installed where a roof edge meets a sidewall. Its purpose is to divert rainwater away from the wall below and into the gutter system. This simple addition plays a crucial role in preventing water from seeping behind the siding and causing rot, mold, or structural damage.

Why is Kickout Flashing Important?

Water is a home’s worst enemy. When water penetrates the siding, it can lead to a host of problems, including:

  • Rotting of the wooden framing and sheathing
  • Deterioration of the siding material
  • Growth of mold which can impact indoor air quality
  • Damage to insulation, reducing the home’s energy efficiency

By directing water into the gutter, kickout flashing helps avoid these issues, preserving the integrity and longevity of the home.

Installation and Maintenance

Proper installation of kickout flashing is crucial. It should extend at least 2 inches beyond the wall and be integrated with the existing step flashing and siding to ensure a watertight seal. Regular inspections are also important to ensure the flashing remains in good condition and continues to function effectively.


While often overlooked, kickout flashing is a vital component in protecting a home from water damage. Homeowners and builders should ensure it is correctly installed and maintained to safeguard the home’s structural integrity and prevent costly repairs in the future.

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