Roof Metal Or Shingle Valleys

Woven closed cut and open.

Roof metal or shingle valleys.

Whether for slate shingle or metal roofing valley flashing adds detail and helps to direct water. For an open valley a sheet of metal usually steel sometimes copper is fastened to the roof deck. For example in metal roofing systems valleys are commonly fabricated with hems but can also be fabricated without them in which case they could still be used for metal roofing or any other type of roofing. The shingles are then cut out of the valley area opening the surface of the valley lining to water run off and the environment.

Valleys are a very important part of a well designed roofing system. Roofing shingles are installed then cut and sealed where they overlap the metal channel. The valley is one of the most critical details on the roof because it collects a lot of water. It is made of galvanized steel and will not rust.

With an open valley a strip of metal will be visible on the roof wherever two opposing roof planes meet. Essentially there are three main ways to shingle a roof valley. A chalk line is then used to strike a line from the top of the valley to the bottom of the valley. Unlikely but it can.

In most cases a metal valley will add durability and longevity to any roofing system. These items can be fabricated in many different profiles. When all roof components are performing well a roof s lifespan is more likely to be maximized. The three methods to shingle a roof valley.

Some homeowners prefer the consistent look that a woven valley provides. Woven valley shingle installation. The metal is usually pre painted to best complement the shingles color blend. An improper installed valley can be the cause of serious leaks.

In addition it is important to avoid nailing the shingles through the valley metal. 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. To achieve a woven valley installation a roofing professional lays shingles in the valley and weaves them together.