Closed Cut Valley

A closed cut valley is a type of roofing valley that is used to direct water flow from two intersecting roof planes into a single channel. In a closed cut valley, shingles or other roofing materials from one roof plane are extended over the valley and cut to fit precisely against the roofing materials from the other roof plane, creating a continuous channel that is completely covered by the roofing material. This creates a seamless appearance and provides a watertight barrier that helps to prevent water infiltration into the building envelope. Closed cut valleys are commonly used in asphalt shingle roofing systems and are often considered more durable and aesthetically pleasing than other types of valley construction, such as open or woven valleys.