Recupero edilizio e nuova costruzione. Non solo risparmio energetico. Importanza della valutazione della fattibilità applicativa a monte della modellazione energetica

The expressions ‘low environmental impact’ and ‘energy efficiency’ mean much more than ‘compliance to regulation and technical specifications’ (89/106/ EEC, article 4). Nowadays, solutions implemented in actions on buildings at least have to comply with regulatory values or parameters with reference to a specific time outlook. This is due to policies and guidelines issued at several levels, starting from the European one to get to the local one, promoting: for new buildings, reviews of design processes so as to create sustainable buildings providing for high-quality housing, for existing buildings, reviews on as-built assets so as to limit energy consumption. Designers selecting potentially applicable ‘sustainable’ technologies should not only assess their profiles in terms of energy and performance which, of course, are essential. Together with the abovementioned issues, in addition to convenience, critical points and viability constraints should be reasonably taken into account during the selection process. For this purpose, some ideas are introduced in form of a journalistic discourse, which, according to the author, can be useful to those designers who have to select from different ranges of viable technological solutions, both based on traditional building practices and on new or emerging practices.