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Kickout Flashing

By In Kickout Flashing On May 21, 2013

Kickout flashing might be one of the most important details to get right when it comes to preventing major water damage to a building.  Kickout flashing is a simple little piece of metal that directs water out and away from a building when a roof surface ends at a wall.  The illustration below, used with permission from the fine folks at CodeCheck, shows how this works.

Kickout Flashing

Here’s an example of kickout flashing not installed, along with major water damage below the area where the kickout flashing was missing.

Missing Kickout Flashing

The rotted siding shown above is just the beginning; the real damage will be inside the wall.  Here’s another photo showing some more obvious damage.

Kickout flashing is important

Kickout flashing has been a requirement in Minnesota since 2007, when the 2006 IRC was adopted.  The 2006 IRC made no reference to kickout flashing, but the Minnesota State Building Code amended section R703.8, and this text was added on:

[Approved corrosion resistant flashing shall be installed at all of the following locations:]

9. Where the lower portion of a sloped roof stops within the plane of an intersecting wall cladding in such a manner as to divert or kick out water away from the assembly.

This is still the building code that is in force in Minnesota today.  My only beef with this language is that it’s not very specific, making cheesy installations like the type shown below ‘legal’.  Arguably.

Bad Kickout Flashing

I guess it’s better than nothing, but come on!  That’s just silly.  The only reason I find goofy installations like this is because of ignorance; it’s quite simple to make a perfectly effective piece of kickout flashing with a standard piece of step flashing.  If everyone knew how to do it, it would always be done right.  Here’s a short how-to video that I made, which shows how to easily bend up a piece of step flashing to create a kickout.

Post update 5/22/13:  Here are two more photos showing the bends in the flashing.  The first shows the bend I made in the video using a longnose pliers, and the second shows what I did with the vice in the video to make the bend flat.

Initial bend in step flashing Clamped together

Author: Reuben Saltzman, Structure Tech Home Inspections


About the Author


Reuben is a second generation home inspector with a passion for his work. He grew up remodeling homes and learning about carpentry since he was old enough to hold a hammer. Reuben has worked for Structure Tech since it was purchased by Neil in 1997, and is now co-owner and President of the company.


  • Ryan Hart 2 YEARS AGO

    Thanks for posting photo evidence of why kickout flashing is so important. Seems like a minor detail until you have to deal with the consequences. I will be sure to look out for it in the future.

  • Reuben Saltzman 2 YEARS AGO

    Good idea, thanks. Done and done.

  • Gordy Kaufmann 2 YEARS AGO

    Reuben, That's a great way to make kick-out flashing. It might be more helpful to get some close-up shots of the flashing as your bending it and of the finished product. That's just my two cents.