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ThyssenKrupp Acciai Speciali Terni develops new stainless steel coating: "Cool Roof" keeps heat out of buildings and saves energy
The facades and roofs of buildings need to stay looking good and last for many years after they are built. But these are not the only properties that have to be met by buildings today. The latest generation of metallic shingles and tiles offer many additional advantages, such as savings on electricity costs and reduction of harmful emissions. The "Vernest" line of panels, shingles and tiles comprises a long-lasting, corrosion-resistant stainless steel substrate coated industrially with special paints. Customers have a free choice of color. The overall appearance of these products underlines the premium quality expected of stainless steel and high-durability coatings.
In addition to standard polyester coatings, ThyssenKrupp Acciai Speciali Terni also offers its Vernest "Cool Roof" products to architects and building companies for use in their projects. "Cool Roof" paints contain pigments that reflect the infrared portion of the solar spectrum very effectively, preventing the greater part of the solar heat from being conducted into the building. Laboratory and practical tests show that buildings covered with Vernest "Cool Roof" coatings display a temperature difference of up to eight degrees Celsius compared with buildings covered with a standard polyester coating of the same color. This allows significant savings on indoor cooling costs of up to 50 percent according to recent studies carried out in the USA. Added to this is the reduction in CO2 emissions which would otherwise have been caused by the generation of the electricity needed to power the air conditioning systems.
Moreover, "Cool Roof" construction elements attached to large horizontal and vertical surfaces help limit the spread of so-called "urban heat islands", a phenomenon which is increasingly affecting large cities during summer heat waves, and not just in Mediterranean countries. In addition to the stress and health problems caused by extreme temperatures, it has been found that the intensity of the photochemical smog is increased.
Thanks to their increased resistance to ultraviolet rays, "Cool Roof" coatings are also less susceptible to color fading. "That gives them a much longer lifecycle than standard products," says Dr. Marcus Albrecht, head of research and development at ThyssenKrupp Acciai Speciali Terni. The Italian company produces the stainless steel substrate at its Terni plant, applies the "Cool Roof" coating and cuts the material to size, providing optimum service to customers.
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