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Kick-Out Flashing

Also called: diverter flashing, kickout

🏠 Roof & Attic — a term you may see in your inspection report.

What is kick-out flashing and why does it matter?

Kick-out flashing is a small piece of bent metal installed where a roof edge meets a vertical wall. Its entire job is to push water away from the wall and into the gutter. When it's missing — and it is missing surprisingly often — water runs down inside the wall assembly instead, and the damage doesn't show up for years, by which point it's rot behind the siding rather than a stain on it. It's a tiny, inexpensive part with a wildly disproportionate consequence.

What it does
Diverts roof runoff away from the wall and into the gutter
Where it belongs
Where a roof edge terminates against a vertical wall
How often it's missing
Very often — one of the more common roof findings
Why it matters
Damage is hidden inside the wall until it's severe

What it actually is

A short piece of metal, bent at an angle, doing one job. There is no cheaper part on a house with a bigger consequence when it's absent.

Why it matters in East Texas

With our rainfall, a missing kick-out doesn't take long to matter. I've found soft sheathing behind siding on houses whose owners had no idea anything was wrong, because from the outside the wall looked completely normal.

What I do when I find one

I check every roof-to-wall termination I can see, from the roof when it's safe to walk and by drone when it isn't. If a kick-out is missing I photograph the location and look for staining or soft material below it.

What it means for you

If it's simply missing with no damage yet, this is a cheap fix and a great catch. If there's staining or soft material below, the scope of the repair depends on what's behind the siding — which nobody can tell you without opening it up.

More roof & attic terms: Attic Ventilation · Ridge Vent · Soffit & Fascia · Roof Decking Delamination · Vapor Barrier

The end of a gutter where a roof edge meets a vertical wall, with no kick-out flashing installed. Water running off the roof edge is directed down the wall instead of into the gutter.
No kick-out flashing here. The gutter simply ends where the roof meets the wall, so every rain sends water down the wall instead of into the gutter — and you can already see it staining the trim below. A part that costs almost nothing, missing, on a house where the damage will show up years from now behind the siding.
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