Roof To Wall Intersection Flashing

Repair any damaged sheathing and framing.

Roof to wall intersection flashing. Above the roof sheathing. The metal flashing is formed with a hook edge and cleated on 12 centers. I cut the tape so that it laps onto the housewrap above and 3 in. Product overview the gibraltar roof to wall flashing is made from trusted 28 gauge galvanized steel.

82 build supplement flashingssection 4 roof 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. Figure 1 apron flashing at roof wall junction horizontal 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.

Tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape. Step 1 flashing 1 is a typical apron roof flashing. Roof to wall flashing is bent at a 110. 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. 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. Use step flashing that has a 2 to 4 inch longer vertical leg than normal. The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas.

The flashing extends up the wall at least 4. Flashing joints are lapped 6 in the direction of water flow. Do not seal housewrap or building paper to step flashing. It is designed to cover and protect roof to wall intersections from water infiltration.

Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it. 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. 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.

Step and kickout flashing should be installed at all roof wall intersections to protect the wall and divert rainwater runoff into a gutter.