Roof Valley Shingle Weave

Some homeowners prefer the consistent look that a woven valley provides.

Roof valley shingle weave.

For a closed valley shingles are installed across the joint where planes intersect. All of the shingle rows will need to be lined up correctly. Here we have a laminated shingle roof that has been installed with a woven valley detail. A woven valley is one method of installation for asphalt shingles at a valley where two intersecting roof slopes meet see featured photo above.

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. Water has a small chance of even getting up under the woven valley shingles even though it flows in either direction. According to long time iko sales representative jeff tessaro closed valleys for residential construction have been popular since he was a roofing contractor in the late 90 s.

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. With each new course roofing shingles continue up the valley. Weaving a shingle valley by dunn contracting 727 410 5717 james dunn. But if the shingles are not laid properly in the valley a woven valley may not lay flat creating bumps and detracting from the overall look of the roof.

Closed valleys or open valleys. The woven valley shingle installation method does not call for roofing cement relying instead on the weave pattern to protect from water infiltration. There are two common methods for completing the flashing of a valley in a shingle roof system. 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.

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. Pros of woven valley shingle installations.