How To Shingle A Roof Valley

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.

How to shingle a roof valley.

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. From this starter shingle continue moving up the valley roof. Continue until you reach the top edge of the valley roof. Extend the 3 tab shingles on one of the roof s planes past the valley at least 12 inches.

This video demonstrates the proper installation technique for installing roofing valleys. In addition it is important to avoid nailing the shingles through the valley metal. Valleys are a prime leak area so it s important to be careful. 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.

Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Stop nailing 6 inches from the center. Step 6 shingle valley. Roof one side of the valley running the shingles across it.

As the asphalt shingles are installed over the roof deck the shingles are extended into the valley. 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. Shingle the other side of the valley the same way. The open woven and closed cut methods are demonstrated.

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. Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys. Secure all of the 3 tab shingles to the roof plane with the 1 inch roofing nails using the local building codes as a placement guide except for the shingles covering the flashing material.