The simplest solution is a kickout diverter flashing which serves as the bottom piece of metal step flashing.
Gutter kickout flashing.
The 2009 irc includes the following section.
It kicks out rain water and diverts it away from the lower wall.
The kickout is installed above the rain gutter and or drip edge flashing where the roof meets a vertical wall.
Available in uncoated aluminum for extra savings.
Learn how to install kickout flashing and help control water management from the roof into the gutter with this instructional guide from james hardie.
The following are locations where kickout flashing is critical.
At the end of the vertical sidewall the step flashing shall be turned out in a manner that directs water away from the wall and onto the roof and or gutter that s code speak for a kickout diverter.
6 1 kick out flashing whenever a roof surface abuts a vertical wall surface moisture intrusion and rot become a risk at the connection between the two planes.
Here s the solution step 1 waterproof the wall.
Proportionally sized 14 5 l x 6 h x 6 w to re direct the large volume water runoff focused at roof eave to wall intersections.
But it s often left out.
Product overview installs where roofline meets a vertical wall protects against water seeping behind your siding diverts water into gutter and away from wall galvanized steel with white finish to match many home exteriors avoids a source of mold problems and foundation damage east step instructions.
Please visit the american achitectural manufacturers association for more information regarding this rigorous standard.
Next install a course of peel and stick membrane along the eaves.
Apply waterproofing membrane where the bottom of the roof meets the wall 1.
Our satin finished colors blend well with gutter and fascia.
Without a kickout flashing the water misses the gutter and runs in behind the siding and gets trapped inside the wall.
It s placed over the membrane at the eave and bent to serve as a spout directing water into the gutter.
The minute or two it takes to create this detail has a pretty big return on investment.
Step 3 install the kickout flashing.
Dryflekt s engineered self positioning seamless kick out flashing is designed for consistent placement for multiple roof pitches removing the guess work of in field trial and error.
Step 2 flash the roof and roof wall connection.
Kick out flashing a somewhat forgotten practice except by the best roofers addresses this risk at the most vulnerable intersection between sloped roofs and walls.