Metal Valley Shingle Roof

Shingles in the valley will not last forever and will have to be replaces during a re roof project but the nails will not leak.

Metal valley shingle roof.

The underlayment is an integral part of every valley and provides a waterproof base all valley installations require appropriate underlayment layers. Metal valley will last forever. In addition it is important to avoid nailing the shingles through the valley metal. To secure the roof valley flashing nail it down carefully.

Shingle the other side of the valley the same way. Then install a non corrosive metal valley flashing of 24 minimum width lap successive sheets of metal flashing a minimum of 12 inches and seal laps. Roofing shingles are installed then cut and sealed where they overlap the metal channel. Fold the top over the roof ridge and cut the bottom along the drip edge metal.

Install an underlayment centered in the roof valley. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. The open woven and closed cut methods are demonstrated. A chalk line is then used to strike a line from the top of the valley to the bottom of the valley.

With an open valley a strip of metal will be visible on the roof wherever two opposing roof planes meet. With a clean valley you can lay down some peel and stick roofing membrane. It is made of galvanized steel and will not rust. Preparation of the valley with an underlayment is a critical part of your roof installation.

Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic. The shingles are then cut out of the valley area opening the surface of the valley lining to water run off and the environment. When all roof components are performing well a roof s lifespan is more likely to be maximized. Unlikely but it can.

The three methods to shingle a roof valley. In most cases a metal valley will add durability and longevity to any roofing system. The metal is usually pre painted to best complement the shingles color blend. First clean the debris out of the valley including sawdust nails and whatever else is in there.

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. How to shingle a valley with architectural shingles. This video demonstrates the proper installation technique for installing roofing valleys. However the hole that is created from the nail may eventually leak.

Then starting at the base of the valley center your first piece of flashing in the valley. Roof one side of the valley running the shingles across it. As a single component in the entire system a metal valley effectively protects other parts of your roof including shingles roof felt and the roof deck.