The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas.
Flashing roof to wall intersections.
Thru wall flashing originates with a vertical leg in contact with the exterior sheathing tucked or shingled up under the house wrap and a horizontal leg that extends all the way through the masonry to the exterior surface of the wall.
Above the roof sheathing.
Our page top photograph illustrates a successful installation of flashing and counter flashing along intersection of a roof surface with the side of a brick constructed dormer.
If the roof is metal or rubber membrane continuous flashing should be used rather than pieces of step flashing.
Step 1 flashing 1 is a typical apron roof flashing.
Do not seal housewrap or building paper to step flashing.
The flashing upstand is carried up under the cladding and wall underlay and the ridge flashing roofing flashing junction ridge flashing barge flashing stop end required to end of apron flashing 4 2 82 build supplement flashingssection 4 roof wall intersections.
Flashing joints are lapped 6 in the direction of water flow.
The flashing extends up the wall at least 4.
The metal flashing is formed with a hook edge and cleated on 12 centers.
Proper installation of flashing and counter flashing at the intersection of a vertical wall with a roof surface is required to avoid roof leaks.
Tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape.
Flexible flashing tape seals the eave to the wall.
Use step flashing that has a 2 to 4 inch longer vertical leg than normal.
Step and kickout flashing should be installed at all roof wall intersections to protect the wall and divert rainwater runoff into a gutter.
I cut the tape so that it laps onto the housewrap above and 3 in.
I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall.
Kick out flashing should be installed at the end of a roof wall intersection to divert water away from the wall and into gutters.
Roof shingles should be installed over the portion of step flashing on the roof.
Install step and kick out flashing at all roof wall intersections to protect walls from water intrusion and install boot or collar flashing at all roof penetrations to protect roofs from leaks.
