The influence of ventilated façade on sound insulation properties of envelope walls

Abstract

Presented article deals with sound insulation properties of timber structures' envelope walls. Particularly, the influence of heavy board ventilated façade on laboratory airborne sound insulation R and Rw in dB was studied. The installation method and gaps between façade boards can cause building defects originating in overrating the influence of ventilated cladding on envelope wall acoustic parameters. Real constructions were built for the experimental purposes and measurements, one with gaps between boards and one with simply eliminated gaps for mutual comparison. The results obtained were processed to make tables and graphs and to derive recommendations for the design of this type of constructions involving the general installation method of façade boards. Detailed results are depicted in conclusions.

The influence of ventilated façade on sound insulation properties of envelope walls

“…Both constructions showed a significant improvement of laboratory sound insulation at all measured frequencies, compared to uninsulated constructions. This phenomenon has been previously described by the authors for example in [5].…”

“…15073 U1, [4]. Mainly the influence of different contact thermal insulation materials was evaluated as described in [5] and followingly, the benefit of heavy facade boards was analyzed. Through the whole project, numerous structures were examined.…”

Analysis of the temperature distribution in the place of fixing the ventilated facade

“…Despite proper thermal insulation, external partitions with ventilated facades should also be characterized by proper acoustic insulation and the ability to protect against vibrations that arise as a result of wind, noise and transport means [17]. These properties are influenced by the used materials and the interconnections between the elements of the facade system, including the anchoring method and the type of material in which the system is installed.…”