Green walls are either a free standing screen densely covered with splendid ornamental vegetation placed close to the wall or a wall façade on which creepers are trained to spread. Green walls may be indoors or the exterior walls of a building.
Green walls covered with dense vegetation act as natural insulators, sun screens, sound barriers and excellent facades. Green walls prevent solar heat exchange and conserve energy even as they create spectacular vertical landscapes that enrich homes and offices. They keep the walls cool in summers and warm in winters, prevent storm water runoff and block indoor warmth from escaping and thus saving on energy costs.