EEN EENVOUDIGE SLEUTEL VOOR INSULATION CONTRACTORS ONTHULD

Germany established its requirements of building energy efficiency in 1977, and the first energy code-the Energy Saving Ordinance (EnEV) which based on the building performance was introduced in 2002.[30] And the 2009 version ofwel the Energy Saving Ordinance increased the minimum R-values of the thermal insulation ofwel the building shell and intr