It is designed to cover and protect roof to wall intersections from water infiltration.
Roof to wall intersection flashing.
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.
Above the roof sheathing.
Step 1 flashing 1 is a typical apron roof flashing.
Tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape.
The flashing extends up the wall at least 4.
Use step flashing that has a 2 to 4 inch longer vertical leg than normal.
Most mason contractors are diligently installing flashing and weep holes at the base of walls as well as at the window head and sill.
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.
Flashing joints are lapped 6 in the direction of water flow.
Raked metal apron flashings must have tapered stop ends to the lower end of the flashing to divert water away from the back of the upstand and into the gutter and have a 5 minimum cross fall see roof to wall junction in build 160.
I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall.
At roof to wall intersections see figure 1.
If there is no metal flashing installed at the wall roof intersection or if the existing flashing is damaged improperly installed or allowing water to damage the wall remove the siding and any existing flashing to expose at least 8 inches of the wall.
Repair any damaged sheathing and framing.
Proper installation of flashing and counter flashing at the intersection of a vertical wall with a roof surface is required to avoid roof leaks.
The metal flashing is formed with a hook edge and cleated on 12 centers.
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.
Do not seal housewrap or building paper to step flashing.
I cut the tape so that it laps onto the housewrap above and 3 in.
Roof to wall flashing is bent at a 110.
Product overview the gibraltar roof to wall flashing is made from trusted 28 gauge galvanized steel.
Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it.
Flexible flashing tape seals the eave to the wall.
Step and kickout flashing should be installed at all roof wall intersections to protect the wall and divert rainwater runoff into a gutter.
82 build supplement flashingssection 4 roof wall intersections.
