Next install the step flashing with the next course of shingles over top of it.
Roof to wall step flashing detail.
N use flashing cement at joints to help secure flashing.
Integrate all step flashings with the sidewall sheathing wrap by slipping the upper legs of the step flashing under the sheathing wrap figure 1 6 at left.
N use step flashing that has a 2 to 4 inch lon ger vertical leg than normal.
Guide to step flashing at building roof wall intersections.
Even if one piece of step flashing fails the flashing and shingle below it start the process over again.
The flashing extends up the wall at least 4.
The metal flashing is formed with a hook edge and cleated on 12 centers.
Same type of metal as the flashing material.
The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas.
If you wanted to horizontal caulk it would only be at the top of the flashing.
It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.
The flashing material should be 4 inches by 7 inches in length when it lies on the roof deck.
Factory shingle cut against the wall minimum 12 butted up snug.
Where snow buildup is anticipated add a band of peel and stick membrane over the step flashing but under the sheathing wrap as shown.
N tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape.
N at roof to wall intersections see figure 1.
Kick out flashing is a piece of flashing that hangs over the edge of the roof helping to divert water away from the adjacent wall or around any obstacles that the roof may butt into.
Step flashing needs to turn up a minimum of three inches up the sidewall.
Flashing joints are lapped 6 in the direction of water flow.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
