Roof To Wall Intersection Flashing

Finally the housewrap can be laid up on the wall to cover the top of the kickout diverter and step flashings.

Roof to wall intersection flashing.

We describe the different flashing materials that can be used how and where flashing should be installed at various building wall intersections and corners at the intersection of a roof and building wall at other locations and how to seal these locations against leaks or insect damage. The current flashing details in the 2013 international residential code irc for sloped roof wall intersections are very difficult to construct. Use step flashing that has a 2 to 4 inch longer vertical leg than normal. All exterior wall coverings whether it is wood siding vinyl siding brick or stone veneer stucco etc.

Flashing must be installed at wall and roof intersections and at built in gutters. Chapter 9 roof assemblies section r903 2. Roof to wall flashing. Must be kept up off the surface of the roof a minimum 1 some manufacturers of exterior wall coverings require.

For deck flashing. Bigger step flashing is better. Self adhered flashing must comply with aama 711.

As a result most typical construction does not use any type of through the wall flashing which results in leaky wall complaints. A headwall is a level junction where a roof meets a wall. This illustration shows proper flashing at a headwall condition. There have always been problems with the flashing details at head walls rake walls and chimneys especially if stucco brick or stone veneer is used.

Below is a sketch of what the flashing at roof to wall intersections should look like. Headwall flashing should extend up behind the exterior wall covering and down over the roof covering material as you see here. Step 2 flashing 2 covers both the apron flashing upstand and the wall underlay. Figure 79a flashing the junction step 1.

Besides anyone can tell from 2 blocks away that you have a veneer on your walls if. That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above. At roof to wall intersections see figure 1. I recommend 12 in wide step flashings bent for a 5 in.

Do not seal housewrap or building paper to step flashing. Tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape. The narrower step flashing just isn t wide enough to protect the intersection fully. Proper roof wall flashing example.

82 build supplement flashings section 4 roof wall intersections figure 79b step 2. Roof leg and a 7 in.