We are talking about self -cleaning windows equipped with an ultra fashion system Pilkington Activ. What is this innovation? Let’s try to figure out all the subtleties in order. For self -cleaning of plastic windows, natural processes are used, such as the decomposition of organic substances, through the use of new technologies. The Pilkington Activ system provides for a two -layer coating. When sunlight enters it, the decomposition reaction is activated.