How To Shingle A Roof Valley

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.

How to shingle a roof valley.

In addition it is important to avoid nailing the shingles through the valley metal. Roof one side of the valley running the shingles across it. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.

The open woven and closed cut methods are demonstrated. Shingle the other side of the valley the same way. 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. However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed.

Stop nailing 6 inches from the center. 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. As the asphalt shingles are installed over the roof deck the shingles are extended into the valley.

The next shingle should be directly atop the first one. Each successive shingle should be then placed with a six inch overlap or until the adhesive strip contacts the bottom of the shingle tabs. This video demonstrates the proper installation technique for installing roofing valleys. From this starter shingle continue moving up the valley roof.

Step 6 shingle valley. Continue until you reach the top edge of the valley roof. Valleys are a prime leak area so it s important to be careful. 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.