Acoustic classification schemes in Europe – Applicability for new, existing and renovated housing

The first acoustic classification schemes for dwellings were published in the 1990’es as national standards with the main purpose to introduce the possibility of specifying easily stricter acoustic criteria for new-build than the minimum requirements found in building regulations. Since then, more countries have introduced acoustic classification schemes, the first countries updated more times and some countries introduced acoustic classification also for other building categories. However, the classification schemes continued to focus on new buildings and have in general limited applicability for existing buildings from before implementation of acoustic regulations, typically in the 1950’es or later.
The paper will summarize main characteristics, differences and similarities of the current national quality classes for housing in ten countries in Europe. In addition, the status and challenges of the international scheme for classification of dwellings under development in ISO/TC43/SC2 will be explained. One of several key characteristics of the proposal is a wide range of classes, implying applicability to a major part of the existing housing stock in Europe, thus enabling acoustic labelling like energy labelling. Consequently, acoustic quality could be visible and initiate consideration of improvement of acoustic conditions, when renovating housing as an integrated part of the renovation process.