Installing step flashing to prevent roof leaks step flashing spans the joint between roof shingles and an adjacent side wall.
The counter flashing at a roof to wall intersection is.
Install kick out flashing at the end of a roof wall intersection to divert water away from the wall and into gutters.
Here s how to install it correctly.
Because most roof flashing is required to extend up the wall a minimum of 4 and some a minimum of 5.
Most simply use a nominal 6 piece of lumber.
But flashing that extends through the veneer and weep holes are often omitted.
At roof to wall intersections see figure 1.
Vent flashing done right to prevent leaks back up roof vent boots with flashing counterflashing and proper shingling.
Ensure that the kick out flashing is large enough to handle expected storm water flows.
However typically in gables the flashing installed consists of a base flashing and a counter flashing.
Use step flashing that has a 2 to 4 inch longer vertical leg than normal.
Most mason contractors are diligently installing flashing and weep holes at the base of walls as well as at the window head and sill.
The roof flashing is then placed up behind this through the wall z bar flashing on the outside of the vertical blocking backing material.
Proper installation of flashing and counter flashing at the intersection of a vertical wall with a roof surface is required to avoid roof leaks.
Tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape.
Roof to wall and deck to wall flashing www fema gov.
