True or False: A closed-cut valley involves one roof plane covering going over the adjacent plane and cut back 2 inches from the centerline.

A closed-cut valley is a roofing technique where one roof plane is laid over the adjacent roof plane, and the shingles on the upper plane are cut back a specified distance from the centerline of the valley, which is typically about 2 inches. This method creates a neat and clean appearance while ensuring that water is directed properly down the valley.

When the shingles are cut back, it allows for proper installation of the underlayment and helps prevent water from being trapped, which could lead to leaks. This technique is especially important in areas where heavy rainfall can occur, as it promotes effective drainage. By placing the shingles in such a manner, the closed-cut valley effectively shields the joint between the two planes, enhancing the roof’s durability and longevity.

In contrast, the other choices either refer to factual inaccuracies or situations that do not apply to standard closed-cut valleys. While flat roofs or metal roofs might use other valley configurations, the concept of a closed-cut valley specifically pertains to sloped roofing systems where shingles are involved. Thus, the true statement regarding the closed-cut valley accurately describes its implementation in roofing.