Energy efficiency is one of the current times main concerns in the field of architecture. More efficient buildings are required: cheaper to maintain and owning a lesser energy footprint. One the most impactful aspects over the
energy efficiency of the buildings is the intake of outdoor air; which if involuntary is called infiltrations.
The research project infiles is a national project funded by the Ministery of Fomento and the Ministry of Economy and Competitiveness, coordinated by the University of Valladolid, which aims to know the airtightness of the architectural envelope
in the Spanish residential sector (and with it, the infiltration rate that it originates), characterizing and quantifying both the flows and weakpoints of the usual constructive solutions, and establishing an evaluation procedure of the excess
of energy consumption through an experimental study which will be carried out over all the Spanish territory.
The experimental procedure consisting on the pressurization of the indoor air volume of the building, commonly named BlowerDoor Test, is based on the EN 13829 and ISO 9972:2006 regulations, and it is usual already in most of the countries
of our surroundings, which use specific requirements in order to verify the correct development of the construction work.
