These control the amount of direct sunlight through a buildings windows. Well designed buildings fitted with Sunshades on windows can be made more energy friendly be regulating light and heating, sometimes optimised for summer and winter conditions. Well positioned sunshades can also be optimised for optimal lighting as the Sun’s angle changes throughout the day. The electricity required for heating and light can be reduced with this type of sunscreen approach.
Sunshades can be made with almost any type of material, though lower weight and weather resistant metals like aluminium are preferable. Automated versions are also possible.