Which construction method uses overlapping shingles to create a woven valley?

The woven valley technique is specifically designed to utilize overlapping shingles in a manner that effectively channels water away from the valley area, which is a critical point for water drainage on a roof. This method involves laying shingles from both sides of the valley so that they interlace at the center, creating a pathway for water while ensuring that the shingles protect each other. This overlapping also enhances the aesthetic appeal of the roof and provides durability against wind and moisture incursion, as it minimizes the risk of leaks typically associated with valleys.

In contrast, the pitched valley construction often focuses on the angles at which the roof meets, while the interlocking valley method uses specially designed shingles that lock into place but do not necessarily overlap in the same manner. The shingled valley style may involve direct layering but lacks the distinctive interwoven pattern that characterizes the woven valley technique. Thus, the woven valley technique stands out as the most effective and recognized method for using overlapping shingles in roof valley construction.