Roof To Wall Intersection Flashing

Flashing joints are lapped 6 in the direction of water flow.

Roof to wall intersection flashing.

Repair any damaged sheathing and framing. 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. The flashing extends up the wall at least 4.

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. It is designed to cover and protect roof to wall intersections from water infiltration. Above the roof sheathing.

Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it. Figure 1 apron flashing at roof wall junction horizontal 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.

Use step flashing that has a 2 to 4 inch longer vertical leg than normal. 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. At roof to wall intersections see figure 1.

Product overview the gibraltar roof to wall flashing is made from trusted 28 gauge galvanized steel. 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. 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.

The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas. Step 1 flashing 1 is a typical apron roof flashing. Flexible flashing tape seals the eave to the wall. 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.