Roof Step Flashing Details

Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.

Roof step flashing details.

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. Some roof features such as chimneys require two pieces of flashing. The vertical flange of the flashing is to extend up behind the adjoining siding. 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 redirects the water back onto the shingle. Step flashings are to be installed one per course. This ensures that rain always.

Step flashing protects the joints between the roof deck and chimneys or dormers. Even if one piece of step flashing fails the flashing and shingle below it start the process over again. 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.

These are the key types of roof flashing you need to understand. Step flashing fits to each course of shingles and appears to step up the wall of the chimney. Continuous flashing is also called apron flashing because it acts a lot like an apron. We ask for 6 inches up the wall.