Valley Roof Intersections

Where two gable roof lines meet the intersection forms inside corners called valleys.

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. Ice barrier underlayment installed in roof valley. 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.

The diagonal rafter that runs from the intersection of the ridges down to. The three methods to shingle a roof valley. All shingles removed from closed cut valley. To do this we had to extend the plane of the shed roof out over the porch roof creating a small triangular extension of the existing roof.

You can see in our roof valley photo left that there has been a history of patching at the valley intersection on this roof. When deciding how to shingle a roof valley you will need to consider your materials the climate and the desired look of the roof. Where two roof valleys meet for example above a gable dormer a soldered joint is likely to break from the movement. Entire width of new metal flashing properly extends over fascia at bottom of roof.

Iko recommends that you install architectural shingles with the open valley method for the best roof performance. 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.