Shingling A Valley On A Roof

Preparation of the valley with an underlayment is a critical part of your roof installation.

Shingling a valley on a roof.

Each successive shingle should be then placed with a six inch overlap or until the adhesive strip contacts the bottom of the shingle tabs. Continue until you reach the top edge of the valley roof. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Roof one side of the valley running the shingles across it.

To shingle out of the valley with laminated shingles lay a shingle down as a gauge and mark the corner at the bottom left and top right of the roof. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. Shingle the other side of the valley the same way. In order to shingle this kind of roof valley a roofing professional has to install both roof faces at the same time which is quite slow.

There are two common methods for completing the flashing of a valley in a shingle roof system. Stop nailing 6 inches from the center. Closed valleys or open valleys. One of the details that varies between homes is the method of flashing the valley areas of the roof.

A woven valley shingle installation has other drawbacks including that they are slow to install especially in cold weather and more difficult to repair than the other types. The next shingle should be directly atop the first one. The three methods to shingle a roof valley. Roof installation how to shingle a valley hd by roofrepair101 more about roofing at.

To understand what makes a valley either closed or open it is important to understand how a valley is constructed. I then move the shingle to the uppermost course on the roof plane line up the mark on the shingle with the valley center and again mark the corner.