Metal Valley Shingle Roof

First clean the debris out of the valley including sawdust nails and whatever else is in there.

Metal valley shingle roof.

Then starting at the base of the valley center your first piece of flashing in the valley. Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic. 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. How to shingle a valley with architectural shingles.

Stop nailing 6 inches from the center. In most cases a metal valley will add durability and longevity to any roofing system. With an open valley a strip of metal will be visible on the roof wherever two opposing roof planes meet. Install an underlayment centered in the roof valley.

With a clean valley you can lay down some peel and stick roofing membrane. Preparation of the valley with an underlayment is a critical part of your roof installation. 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.

A chalk line is then used to strike a line from the top of the valley to the bottom of the valley. The shingles are then cut out of the valley area opening the surface of the valley lining to water run off and the environment. Fold the top over the roof ridge and cut the bottom along the drip edge metal. Shingle the other side of the valley the same way.

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. It is made of galvanized steel and will not rust. This video demonstrates the proper installation technique for installing roofing valleys. Metal valley will last forever.

For an open valley a sheet of metal usually steel sometimes copper is fastened to the roof deck. 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. The underlayment is an integral part of every valley and provides a waterproof base all valley installations require appropriate underlayment layers.

When all roof components are performing well a roof s lifespan is more likely to be maximized. In addition it is important to avoid nailing the shingles through the valley metal. Roofing shingles are installed then cut and sealed where they overlap the metal channel. Ensure ice and water protector has been installed along the valley first.

The three methods to shingle a roof valley. Unlikely but it can. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.