Weaving a shingle valley by dunn contracting 727 410 5717 james dunn.
Roof valley shingle weave.
To understand what makes a valley either closed or open it is important to understand how a valley is constructed.
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.
Closed valleys or open valleys.
One of the details that varies between homes is the method of flashing the valley areas of the roof.
So if you are installing a woven valley you must push the shingles snugly into the valley while not nailing within six inches of the valley center.
All of the shingle rows will need to be lined up correctly.
Woven valleys should only be used with strip shingles.
Water has a small chance of even getting up under the woven valley shingles even though it flows in either direction.
Here we have a laminated shingle roof that has been installed with a woven valley detail.