Metal roofing materials are readily available and offer a wide choice of metals, shapes, designs, and colors. Roofs made of durable metals now grace everything from warehouses and barns to Beverley Hills mansions. They offer every feature of other roofing materials and last longer than almost any other type of roofing. Metal roofs are extremely durable and often come with extended warranties. Most steel roofing have a baked enamel finish that resist rust for many years. Steel and the other metals can also be shaped easily. A steel roof can be nearly indistinguishable from clay tiles, cedar shakes, slate tiles, or asphalt shingles. The metal roof, while identical in appearance in color and texture, may be much lighter in weight. This can make it possible to lay a new roof over an older one without adding to the structural strength of the building.
One great advantage of a standing seam metal roofs is weak point in many other roof systems. The seams are raised above the level of the roofing panel. Because the metal panels run unhindered from the top to the bottom of the roof, not only are there no horizontal seams but in total the roof has a far fewer number of seams. Yes, metal is tough, but the sheet metal in this type of roofing can certainly be penetrated by falling limbs or dented by a severe hailstorm.
As the name implies it is a combination of a shaped steel panel that has typically been coated to have the appearance of a traditional asphalt shingle but the durability of steel panels. They come in a variety of colors and designs and are by horizontal panels.