Valley Roof Intersections

Also different architectural styles will use the same type of roof.

Valley roof intersections.

Entire width of new metal flashing properly extends over fascia at bottom of roof. 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. The three methods to shingle a roof valley. Ice barrier underlayment installed in roof valley.

Iko recommends that you install architectural shingles with the open valley method for the best roof performance. 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. Where two roof valleys meet for example above a gable dormer a soldered joint is likely to break from the movement.

Where two gable roof lines meet the intersection forms inside corners called valleys. The following photos illustrate removal and replacement of a closed cut valley with new open metal valley shingles being removed in closed cut valley. The diagonal rafter that runs from the intersection of the ridges down to. Valley rafters and valley jacks.

All shingles removed from closed cut valley. This recommendation includes iko s premium shingles.