Roof Step Flashing Details

Continuous flashing is also called apron flashing because it acts a lot like an apron.

Roof step flashing details.

It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing. Vent pipe flashing fits over flues or pipes. So we instruct our roofers to run the ice barrier membrane and the roof underlayment up the sidewalls. Stepped flashing is used where a sloped shingled roof intersects a vertical wall.

Some roof features such as chimneys require two pieces of flashing. Wind driven rain and snow can penetrate between step flashing pieces and wet the sidewalls and the roof. Step flashing fits to each course of shingles and appears to step up the wall of the chimney. The vertical flange of the flashing is to extend up behind the adjoining siding.

Common flashing details step flashing. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. These are the key types of roof flashing you need to understand. Even if one piece of step flashing fails the flashing and shingle below it start the process over again.

We ask for 6 inches up the wall. Step flashings are to be installed one per course. Head flashings are used to direct water away from openings such as windows and doors. Step flashing protects the joints between the roof deck and chimneys or dormers.