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ASIEPI stands for 'Assessment and Improvement of the EPBD Impact (for new buildings and building renovation)'.
The project addresses 6 technical issues:EPBD requires Member States to define building energy
performance requirements... but did the Member States take this
opportunity to strengthen their existing legislation?
States are free to define their calculation methods and their
requirements... Is it therefore possible to compare requirements across
Europe? If yes, are the requirements from one country more severe than
The implementation of the Energy Performance of Buildings Directive (EPBD) has caused in most of the EU Member States more severe requirements for the energy demand of buildings. In order to meet these requirements, not only buildings components with better U-values and more efficient building systems have to be used, also the ventilation losses have to be reduced. A contribution to this necessary reduction is the improvement of the building envelope airtightness, mainly the airtightness of building components and joints.
The impact assessment includes the likely costs and benefits of the leading options. 4 options have been assessed in total ranging from doing nothing to 25 % reduction on 2006 Part L Building Regulations from 2010 and 44 % reduction from 2013, and 100 % reduction from 2016 with high energy efficiency and allowable solutions.