CSLB C-39 Roofing ContractorFlashing, Ventilation and InsulationHard
A roof-to-sidewall intersection ends where a sloped roof meets a wall and transitions into a gutter. Without a specific flashing detail at this termination point, water running down the wall can be diverted behind the gutter and into the wall assembly. What flashing component is specifically required at this location to prevent that intrusion?
- ADrip edge flashing
- BContinuous counter flashing
- CKickout flashing
- DValley flashing
Show answer & explanationAnswer & explanation
Correct answer: C. Kickout flashing
Kickout flashing is required at the termination of a roof-wall step flashing run where it meets a gutter, diverting water away from the wall and into the gutter instead of allowing it to run behind the gutter into the wall assembly, a common cause of hidden rot.
Why the other options are wrong
- A. Drip edge manages the eave edge, not the wall termination point.
- B. Counter flashing works with step flashing along the wall but does not solve the termination/diversion problem at the gutter.
- D. Valley flashing addresses roof plane intersections, not roof-to-wall terminations.
Kickout Flashing
Kickout flashing is a diverter installed at the bottom termination of a step flashing run where a roof meets a sidewall, directing water outward into the gutter and away from the wall assembly.
- Prevents water intrusion behind gutters into wall framing.
- One of the most common sources of hidden water damage claims when omitted.
- Required by code at roof-wall-gutter transition points.
Memory trick: 'Kick the water out before it sneaks in.'