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.
Roof to wall intersection flashing.
Proper installation of flashing and counter flashing at the intersection of a vertical wall with a roof surface is required to avoid roof leaks.
Flashing joints are lapped 6 in the direction of water flow.
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.
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.
At roof to wall intersections see figure 1.
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.
Product overview the gibraltar roof to wall flashing is made from trusted 28 gauge galvanized steel.
Roof to wall flashing is bent at a 110.
The flashing extends up the wall at least 4.
Step 1 flashing 1 is a typical apron roof flashing.
82 build supplement flashingssection 4 roof wall intersections.
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.
Figure 1 apron flashing at roof wall junction horizontal flashing.
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.
Flexible flashing tape seals the eave to the wall.
Do not seal housewrap or building paper to step flashing.
The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas.
The metal flashing is formed with a hook edge and cleated on 12 centers.
I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall.
Most mason contractors are diligently installing flashing and weep holes at the base of walls as well as at the window head and sill.
Repair any damaged sheathing and framing.
Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it.
Above the roof sheathing.
It is designed to cover and protect roof to wall intersections from water infiltration.
