Roof To Wall Step Flashing Detail

Step flashing needs to turn up a minimum of three inches up the sidewall.

Roof to wall step flashing detail. 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. 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. If you wanted to horizontal caulk it would only be at the top of the flashing.

On a high wind wall low pitch vertical caulk at the roof edge of the flashing for insurance. Same type of metal as the flashing material. It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing. Even if one piece of step flashing fails the flashing and shingle below it start the process over again.

Step flashing redirects the water back onto the shingle. Flashing joints are lapped 6 in the direction of water flow. N tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape. Where snow buildup is anticipated add a band of peel and stick membrane over the step flashing but under the sheathing wrap as shown.

Next install the step flashing with the next course of shingles over top of it. Factory shingle cut against the wall minimum 12 butted up snug. This process will continue up the entire roof. The flashing extends up the wall at least 4.

N at roof to wall intersections see figure 1. N use flashing cement at joints to help secure flashing. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas.