Roof To Wall Intersection Flashing

Sealing Structural Penetrations At Roof Wall Intersections Roof Repair Diy Roofing Roof Repair

Sealing Structural Penetrations At Roof Wall Intersections Roof Repair Diy Roofing Roof Repair

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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.

Roof to wall intersection flashing.

Step 2 flashing 2 covers both the apron flashing upstand and the wall underlay. 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. That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above. Yes there will be a little more exposed metal along the rake walls head walls and chimneys but this through the wall z bar flashing will look very nice if pre painted.

Figure 79a flashing the junction step 1. To install the roof wall flashing above the builder bent the top edge of the flashing into a 90 degree lip about 2 cm in width. For deck flashing. Roof leg and a 7 in.

Self adhered flashing must comply with aama 711. Do not seal housewrap or building paper to step flashing. Must be kept up off the surface of the roof a minimum 1 some manufacturers of exterior wall coverings require. All exterior wall coverings whether it is wood siding vinyl siding brick or stone veneer stucco etc.

Proper roof wall flashing example. Besides anyone can tell from 2 blocks away that you have a veneer on your walls if. Roof to wall flashing. 82 build supplement flashings section 4 roof wall intersections figure 79b step 2.

Use step flashing that has a 2 to 4 inch longer vertical leg than normal. Tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape. Flashing is required at wall and roof intersections and to divert water away from where the eave of a sloped roof intersects a vertical sidewall. At roof to wall intersections see figure 1.

Flashing must be installed at wall and roof intersections and at built in gutters. Bigger step flashing is better. Headwall flashing should extend up behind the exterior wall covering and down over the roof covering material as you see here. Chapter 9 roof assemblies section r903 2.

The current flashing details in the 2013 international residential code irc for sloped roof wall intersections are very difficult to construct. I recommend 12 in wide step flashings bent for a 5 in. Finally the housewrap can be laid up on the wall to cover the top of the kickout diverter and step flashings. A headwall is a level junction where a roof meets a wall.

As a result most typical construction does not use any type of through the wall flashing which results in leaky wall complaints. This illustration shows proper flashing at a headwall condition.

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