Acoustic retrofit strategies of windows in facades of residential buildings: Requirements and recommendations to reduce exposure to environmental noise

Achieving an adequate indoor acoustic comfort environment is one of the main priorities to avoid adverse effects caused by noise. Façades are constructive elements most likely be retrofitted due their delimiting function between and outdoor space. This study compares façade requirements established for new existing buildings in current national building regulations. The assessment regulations analysis a comparison model, examining different techniques improving sound insulation, conclude that on global scale there lack consensus external noise insulation worldwide. It not possible merely summarize all into single number as required depends performance element, level or level. Therefore, in-depth discussion harmonization also analyses wall solutions housing stock compliance with regulations, results showing upgrading interventions focused windows can sufficient propose suitable systems worldwide when amounts 60 dB(A) measured 2 m from façade.