There are three common valley details.
Roof valley shingle weave.
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.
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.
Woven valleys should only be used with strip shingles.
Here are diagrams of each style valley style.
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.
There is a variation on the closed cut referred to as a california valley.
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.
Some homeowners prefer the consistent look that a woven valley provides.
Woven open and closed cut.