Proper roof wall flashing example.
Flashing between roof and wall.
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.
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.
A sidewall is a junction between a wall and a sloped portion of a roof.
Above the roof sheathing.
Step flashing installed as each course of shingles is installed involves placing an individual piece of metal flashing bent at a right angle against the building wall extending up the wall 4 and onto the roof a minimum of 2 4 is preferable.
Drip edge metal valley flashing dormer chimney and kick out flashing shed water away from the connections between roofs walls chimneys and other building assemblies this collection of 18 articles animations and videos identifies the critical roof flashing areas illustrates durable roof flashing details and shows how to flash roofs.
Except where walls are brick the vertical part of the sidewall flashing should extend up behind the exterior wall covering just like with headwalls.
That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above.
Damaged or improperly installed roof flashing especially around the chimney or dormer is one of the most common causes of roof leaks.
I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall.
Flexible flashing tape seals the eave to the wall.
