Valley Roof Intersections

The following photos illustrate removal and replacement of a closed cut valley with new open metal valley shingles being removed in closed cut valley.

Valley roof intersections.

Valley rafters and valley jacks. The diagonal rafter that runs from the intersection of the ridges down to. Intricate roofs have many parts that incorporate several of the basic roof designs such as a gable roof sitting atop a gambrel or variations of the gable valley roof design using one or a variety of different types of roof trusses also see our very detailed diagrams showing the different parts of a roof truss. You can see in our roof valley photo left that there has been a history of patching at the valley intersection on this roof.

The three methods to shingle a roof valley. Iko recommends that you install architectural shingles with the open valley method for the best roof performance. The bottom of our blind valley was about 30 inches short of the bottom of the porch roof so we extended the line of the valley down to the edge of the new roof. This recommendation includes iko s premium shingles.

Entire width of new metal flashing properly extends over fascia at bottom of roof. Where two roof valleys meet for example above a gable dormer a soldered joint is likely to break from the movement. A lead cap overlaid 6 inches onto each valley is an effective way to seal the top. All shingles removed from closed cut valley.

Ice barrier underlayment installed in roof valley. Where two gable roof lines meet the intersection forms inside corners called valleys.