Metal Valley On Shingle Roof

With an open valley a strip of metal will be visible on the roof wherever two opposing roof planes meet.

Metal valley on shingle roof.

It is made of galvanized steel and will not rust. A chalk line is then used to strike a line from the top of the valley to the bottom of the valley. For an open valley a sheet of metal usually steel sometimes copper is fastened to the roof deck. Install an underlayment centered in the roof valley.

In addition it is important to avoid nailing the shingles through the valley metal. Use roof valley cleats at intervals of 24 o c. Some homeowners do not like the look of open valleys while others feel the metal accentuates the roof s shape particularly if copper or painted flashing is used. 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.

The shingles are then cut out of the valley area opening the surface of the valley lining to water run off and the environment. How to secure metal roof valley by clips cleats or edge trapping roofing nails. When all roof components are performing well a roof s lifespan is more likely to be maximized. Recommended procedures of basic valley flashing installation.

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. First clean the debris out of the valley including sawdust nails and whatever else is in there. However the hole that is created from the nail may eventually leak. Fold the top over the roof ridge and cut the bottom along the drip edge metal.

Open valley shingle installation an open valley relies on metal flashing for protection. The metal is usually pre painted to best complement the shingles color blend. 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. The installer fabricates simple clips or valley flashing cleats whose bent edge interlocks with the folded over or hemmed edges of the metal roof valley flashing to secure the valley to the roof deck.

Roof one side of the valley running the shingles across it. With a clean valley you can lay down some peel and stick roofing membrane. In most cases a metal valley will add durability and longevity to any roofing system. That flashing is left exposed so the roof has visible lines of metal running down the valley.

Unlikely but it can. Roofing shingles are installed then cut and sealed where they overlap the metal channel. 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. Stop nailing 6 inches from the center.