Vertical Greenery System in clima mediterraneo: riflessioni per un’architettura sostenibile

Green Infrastructures (G.I) are one of the strategies for climate resilience; urban trees and hedges, greening of private and public land, Green Roofs (GR) and Vertical Greenery Systems (VGS) according to numerous researches allow to respond to multiple needs at the urban scale such as CO2 reduction, urban heat island (UHI) mitigation, water retention, psychophysical well-being. Green roofs have long been considered highly performing as regards indoor comfort in buildings; instead, for VGS in the literature there are experimental studies and simulations underway, only some of which refers to the Mediterranean climate (Csa, Koppen-Geiger classification). The studies focus mainly on the design of the new technical elements, evaluating their contribution with regard to the containment of energy demand and the reduction of UHI. In this scenario, the paper presents reflections, based on data in the literature, on the criticality and potentiality of VGS, mainly in Mediterranean climate. To this purpose, the state of the art made possible to identify which researches could explore the different disciplinary contributions to the theme of façade greening, analysed according to technological and performance aspects (energy demand, UHI reduction, maintenance, carbon footprint). The paper, which is part of a study conducted by the research group, is a premise for the technological transfer of this useful strategy in real estate retrofit.