Roof To Wall Step Flashing Detail

N use step flashing that has a 2 to 4 inch lon ger vertical leg than normal.

Roof to wall step flashing detail.

Same type of metal as the flashing material. Step flashing redirects the water back onto the shingle. 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.

The flashing extends up the wall at least 4. N use flashing cement at joints to help secure flashing. It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing. The metal flashing is formed with a hook edge and cleated on 12 centers.

Guide to step flashing at building roof wall intersections. The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas. On a high wind wall low pitch vertical caulk at the roof edge of the flashing for insurance. N tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape.

Flashing joints are lapped 6 in the direction of water flow. Step flashing needs to turn up a minimum of three inches up the sidewall. 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.

This process will continue up the entire roof. Even if one piece of step flashing fails the flashing and shingle below it start the process over again. Next install the step flashing with the next course of shingles over top of it. The flashing material should be 4 inches by 7 inches in length when it lies on the roof deck.