Roof Step Flashing Details

These are the key types of roof flashing you need to understand.

Roof step flashing details.

Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. Continuous flashing is also called apron flashing because it acts a lot like an apron. 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.

Common flashing details step flashing. Some roof features such as chimneys require two pieces of flashing. Step flashing redirects the water back onto the shingle. It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.

We ask for 6 inches up the wall. Stepped flashing is used where a sloped shingled roof intersects a vertical wall. This ensures that rain always. Head flashings are used to direct water away from openings such as windows and doors.

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. Step flashing protects the joints between the roof deck and chimneys or dormers. Wind driven rain and snow can penetrate between step flashing pieces and wet the sidewalls and the roof. The vertical flange of the flashing is to extend up behind the adjoining siding.