The EFFICACY Project Database

Data were collected from a questionnaire survey prepared within the scope of the EEA Granted EFFICACY (Energy eFFiciency building and CirculAr eConomY for thermal insulating solutions) project. The questionnaire survey was delivered online in three European countries (i.e., Italy, Norway and Portugal) in the period between November 2022 and February 2023. The questionnaire was prepared in English, Italian and Portuguese. Data were collected responding to the questionnaire survey prepared considering a PESTE analysis (i.e., the questionnaire was designed considering 5 different sections related to Political, Economic, Social, Technological and Environmental questions). The questionnaire asked people living and/or working in Italy, Norway and Portugal to express their perception and knowledge about the use and performance of thermal insulation solutions applied in new construction and thermal retrofitting of building facades. The data provide a new understanding on the use of thermal insulation solutions in building facades of Italy, Norway and Portugal. The data provide quantitative information on the level of knowledge and perception of the respondents related with thermal insulation performance criteria, as well as the needs regarding thermal comfort inside their dwellings. The data can be useful for researchers working in the field of the energy efficiency of buildings and thermal insulation materials who seek to further understand the use of different thermal insulation solutions in new construction and thermal retrofitting of Italian, Norwegian and Portuguese facades considering stakeholders perception and knowledge. The data is also valuable for building professionals, manufacturers of thermal insulation solutions, and others interested in energy efficiency and building thermal retrofitting.