Shingling A Roof Valley

Closed cut and long island roof valleys.

Shingling a roof valley.

To understand what makes a valley either closed or open it is important to understand how a valley is constructed. One of the details that varies between homes is the method of flashing the valley areas of the roof. There are two common methods for completing the flashing of a valley in a shingle roof system. The open woven and closed cut methods are demonstrated.

Valleys are a prime leak area so it s important to be careful. From this starter shingle continue moving up 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.

Stop nailing 6 inches from the center. 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. The next shingle should be directly atop the first one. Step 6 shingle valley.

Keeping a solid roofing layer of shingles is an important way to avoid water damage and. 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. Each successive shingle should be then placed with a six inch overlap or until the adhesive strip contacts the bottom of the shingle tabs. Closed valleys or open valleys.

For the next two shingling methods closed cut and long island valleys i work out of the valley using laminated shingles instead of working toward the valley with three tab shingles. According to long time iko sales representative jeff tessaro closed valleys for residential construction have been popular since he was a roofing contractor in the late 90 s. Shingling both a closed cut valley and a long island valley is the same for the first half of the process. With each new course roofing shingles continue up the valley.

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. Shingles protect sloping rooftops from the effects of rain snow and hail while providing an attractive crown for the house. Continue until you reach the top edge of the valley roof. Shingle the other side of the valley the same way.