Roof Step Flashing Details

Step flashing redirects the water back onto the shingle.

Roof step flashing details. The vertical flange of the flashing is to extend up behind the adjoining siding. This ensures that rain always. So we instruct our roofers to run the ice barrier membrane and the roof underlayment up the sidewalls. Vent pipe flashing fits over flues or pipes.

Some roof features such as chimneys require two pieces of flashing. Step flashing fits to each course of shingles and appears to step up the wall of the chimney. We ask for 6 inches up the wall. Step flashings are to be installed one per course.

Wind driven rain and snow can penetrate between step flashing pieces and wet the sidewalls and the roof. Stepped flashing is used where a sloped shingled roof intersects a vertical wall. It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing. 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.

These are the key types of roof flashing you need to understand. Common flashing details step flashing. Continuous flashing is also called apron flashing because it acts a lot like an apron. Head flashings are used to direct water away from openings such as windows and doors.