Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
Roof step flashing details.
Even if one piece of step flashing fails the flashing and shingle below it start the process over again.
Step flashings are to be installed one per course.
Continuous flashing is also called apron flashing because it acts a lot like an apron.
This ensures that rain always.
Stepped flashing is used where a sloped shingled roof intersects a vertical wall.
Common flashing details step flashing.
So we instruct our roofers to run the ice barrier membrane and the roof underlayment up the sidewalls.
Step flashing fits to each course of shingles and appears to step up the wall of the chimney.
It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.
Head flashings are used to direct water away from openings such as windows and doors.
We ask for 6 inches up the wall.
The vertical flange of the flashing is to extend up behind the adjoining siding.
Wind driven rain and snow can penetrate between step flashing pieces and wet the sidewalls and the roof.
Step flashing protects the joints between the roof deck and chimneys or dormers.
These are the key types of roof flashing you need to understand.
The roof deck flange of step flashings are to be fastened to the surface of each shingle in a position whereby the next course of shingles will cover up hide the flashing from view.