Feijó Muñoz, JesúsPoza-Casado, IrenePardal March, CristinaEcharri, VíctorAssiego de Larriva, RafaelFernández-Agüera, J.Dios-Viéitez, María JesúsDel Campo-Díaz, Víctor JoséMontesdeoca Calderín, ManuelPadilla Marcos, Miguel ÁngelMeiss, AlbertoGonzález Lezcano, Roberto AlonsoUniversidad San Pablo-CEU. Escuela Politécnica Superior2023-09-162023-09-162018-03-21Feijó-Muñoz, J.; Poza-Casado, I.; González-Lezcano, R.A.; Pardal, C.; Echarri, V.; Assiego De Larriva, R.; Fernández-Agüera, J.; Dios-Viéitez, M.J.; Del Campo-Díaz, V.J.; Montesdeoca Calderín, M.; et al. Methodology for the Study of the Envelope Airtightness of Residential Buildings in Spain: A Case Study. Energies 2018, 11, 704. https://doi.org/10.3390/en110407041996-1073http://hdl.handle.net/10637/14601Air leakage and its impact on the energy performance of dwellings has been broadly studied in countries with cold climates in Europe, US, and Canada. However, there is a lack of knowledge in this field in Mediterranean countries. Current Spanish building regulations establish ventilation rates based on ideal airtight envelopes, causing problems of over-ventilation and substantial energy losses. The aim of this paper is to develop a methodology that allows the characterization of the envelope of the housing stock in Spain in order to adjust ventilation rates taking into consideration air leakage. A methodology that is easily applicable to other countries that consider studying the airtightness of the envelope and its energetic behaviour improvement is proposed. A statistical sampling method has been established to determine the dwellings to be tested, considering relevant variables concerning airtightness: climate zone, year of construction, and typology. The air leakage rate is determined using a standardized building pressurization technique according to European Standard EN 13829. A representative case study has been presented as an example of the implementation of the designed methodology and results are compared to preliminary values obtained from the database.application/pdfenopen accessResidential buildingsInfiltrationsArtículo10.3390/en11040704https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es