That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above.
Walls between roofs.
The horizontal part of the flashing will vary depending on the type of roof covering material.
It is because the intersection between the roof and the exterior wall covering is not properly installed and flashed.
If there were no flashing against these walls water could slowly drip into the crevice between the wall and the roof and potentially into the home.
Like rain snow sleet wind and hail.
This oversight has been going on for years and costing property owners many thousands of dollars.
Continuity of the control layers between roofs and walls is the whole enchilada.
The purpose of your home s roof is to protect the entire structure and you from weather.
To install the roof wall flashing above the builder bent the top edge of the flashing into a 90 degree lip about 2 cm in width.
Damaged or improperly installed roof flashing especially around the chimney or dormer is one of the most common causes of roof leaks.
Except where walls are brick the vertical part of the sidewall flashing should extend up behind the exterior wall covering just like with headwalls.