Roof Valley Shingle Weave

Pros of woven valley shingle installations.

Roof valley shingle weave.

Here we have a laminated shingle roof that has been installed with a woven valley detail. 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. 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.

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. All of the shingle rows will need to be lined up correctly. The woven valley shingle installation method does not call for roofing cement relying instead on the weave pattern to protect from water infiltration.

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.