A closed cut roof valley will have at least four layers of roof materials.
Roof hog valley.
The hog valley is much wider at the top than the bottom.
There is usually a wall that this valley meets at the narrow end causing water to accumulate at.
Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys.
The open woven and closed cut methods are demonstrated.
In either situation the leaking roof valley can be fixed by removing affected shingles and structural elements and upgrading your roof s flashing.
Valleys are a prime leak area so it s important to be careful.
Weaving a shingle valley by dunn contracting 727 410 5717 james dunn.
And damaged flashing is behind most roof leaks.
A hog valley is a section of roof that is usually a lower pitch or angle of roof that collects a lot of water from the other two steeper roofs that flow into it.