Recommendations for the measurement of sound insulation between dwellings

Abstract National and international standards for the measurement of sound insulation allow the user considerable flexibility in his technique. Concerned that this could lead to systematic differences in results, seven leading test organisations in the UK formed a working group to devise a detailed procedure compatible with BS 2750 and ISO 140. The agreed procedure is explained and fully set out in this paper. A comparison between the results obtained by the groups using this agreed method and their individual methods is described. Some reduction in discrepancies was found with the new method but they were by no means eliminated.