Roof Valley Shingle Weave
Pros of woven valley shingle installations.
Roof valley shingle weave. This is an incorrect installation of this type of roofing material and will be more prone to water intrusion and will void the manufacturer s warranty for this material. A woven valley shingle installation is one where the shingles from both sides of the roof valley extend over the valley and weave together overlapping courses alternately. Water has a small chance of even getting up under the woven valley shingles even though it flows in either direction. Weaving a shingle valley by dunn contracting 727 410 5717 james dunn.
Here we have a laminated shingle roof that has been installed with a woven valley detail. There are two common methods for completing the flashing of a valley in a shingle roof system. To understand what makes a valley either closed or open it is important to understand how a valley is constructed. Woven valleys should only be used with strip shingles.
Closed valleys or open valleys. All of the shingle rows will need to be lined up correctly.