Roof Valley Weave

A woven valley is one method of installation for asphalt shingles at a valley where two intersecting roof slopes meet see featured photo above.

Roof valley 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. Woven valleys should only be used with strip shingles. Stop nailing 6 inches from the center. A closed cut asphalt shingle roof valley starts the same way as a woven valley with the first course of shingles run across the valley from both roof planes lapping the shingle from the larger or steeper roof plane over the shingle from the smaller shallower plane.

Some homeowners prefer the consistent look that a woven valley provides. It is a method where the valley is completed by overlapping and weaving the shingle courses rather than cutting the shingles back to form a trough lined with a sheet metal flashing see figure wv 1. Shingling both a closed cut valley and a long island valley is the same for the first half of the process. 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.

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. All of the shingle rows will need to be lined up correctly. Shingle the other side of the valley the same way. Here we have a laminated shingle roof that has been installed with a woven valley detail.

To achieve a woven valley installation a roofing professional lays shingles in the valley and weaves them together. But if the shingles are not laid in the valley properly a woven valley may not lay flat creating bumps and detracting from the overall look of the roof. Roof one side of the valley running the shingles across it. Pros of woven valley shingle installations.