Metal roofs make up only 10-12% of all the roofs in the United States. Because of the economical value of these types of roof, they are often used for industrial or farming buildings. Ironically, they are most often used for low cost installations or for upscale, higher end luxury homes. They are rarely used for middle class residential buildings.
There are many types of metal roofs, but they are all installed in the same basic way. The metal (tin, copper, galvanized steel or aluminium) is poured into hot molds or pressed into shape. Then it is given a finishing treatment of some sort of coating. The coating for these types of roofs is nearly infinite in color, design, shape, and function.
Coating can come in many materials and finished based on the needs of the client. Ceramic coating not only presents a finished, polished, luxurious look to the home, but it also can reflect heat better than other, similar coatings. These roofs are most often seen in the Southern US and in parts of the Midwest and lower centrals states, such as Oklahoma, Kansas and Missouri.
Despite the beauty of metal roofs, they are easy to damage and may not be as durable as Asphalt Shingles during Oklahoma weather. Tornadoes, hail and dust storms will cause damage to metal roofs by scratching the coating, while high winds are more likely to damage these types of roofing more than most others. Corrosion is also an issue with metal roofing, as well as lead leaching out and staining other building materials.
There are many myths about metal roofing, including that it raises temperatures. While this may be true when insulation installation has not been completed or is done improperly, research has shown that copper roofs, once properly installed and insulated actually lower energy costs when compared to Asphalt shingles.