Roof Step Flashing Details

It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing. Step flashing fits to each course of shingles and appears to step up the wall of the chimney. Head flashings are used to direct water away from openings such as windows and doors.

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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.

Roof step flashing details.

Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. Step flashing redirects the water back onto the shingle. Continuous flashing is also called apron flashing because it acts a lot like an apron. This ensures that rain always.

Common flashing details step flashing. 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.

We ask for 6 inches up the wall. 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. Step flashing protects the joints between the roof deck and chimneys or dormers.

The vertical flange of the flashing is to extend up behind the adjoining siding. 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. Vent pipe flashing fits over flues or pipes.