Facades are the interface between the interior and exterior of a building. They are the most striking and visible parts of a building, they protect it from external agents and are one of the main contributors to creating comfortable environments since it is where thermal gains and losses occur. Just like our skin, an extremely versatile organ of our body, it should be natural for it to be the part of the building which bears technology capable of becoming adaptable to the environmental conditions of the place where it is located.
This is why the term Smart Facades has been increasingly mentioned. A facade can be considered smart when it adapts to environmental conditions and transforms itself simultaneously. This happens through its components (passive or active), which adjust to adapt to different conditions, responding to changes that occur on the outside and inside of the building. When it comes to facades, the main focus is on the equation of maximizing natural sunlight, protecting from solar radiation, while controlling ventilation and heat input/output. These exchanges can occur through the glazing, which can be considered smart when its properties of light transmittance shift due to electrical voltage, light or heat is then applied, causing the glass to change its appearance thus altering the intensity as well as certain wavelengths of light.