Roof With Woven Valley

Hey Guys!
In need of an experienced roofer on the subject of woven valleys with 3-tab shingles. Referring to the pictures below, 3 courses of shingles are installed before weaving the opposite course. I sometimes see two layers but never 3. Would this be an issue, or is this common depending on the valley’s slope? This is my first time coming across a woven valley. Thanks in advance for the help!


California valley ! It is fine.

I thought California valleys had a cut line? That looks like (an attempt at) a woven valley and does not look right to me at all. The weave/overlap should be in the middle of the valley and it seems to wander all over.

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It is hard to tell from the pics, but when weaving a valley, if you have two different pitches, you have to double up on the weave to keep the weave in the center of the valley.

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When installing woven valleys, courses on adjacent slopes are installed at the same time, overlapping each course at the valley before the next course is started.

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