Sound Attenuation of Balcony Glazing

Retractable balcony glazing provides an effective solution for reducing street noise and improving the acoustic environment in the apartments and also on balconies.

According to the European Committee for Standardization’s EN 20140-10:2016 standard, balcony glazing can significantly attenuate external noise.

Sound attenuation tests conducted in accordance with EN 20140-10:2016 evaluate the performance of balcony glazing in reducing sound transmission. The test results are expressed in terms of the weighted sound reduction index (Rw).

Based on these tests, balcony glazing systems have been found to achieve sound reduction levels of up to 20 dB [1].

The weighted sound reduction index (Rw) is a measure of the airborne sound insulation provided by the glazing system. A higher Rw value indicates greater sound insulation capability. The tests conducted in accordance with EN 20140-10:2016 provide valuable data on the sound reduction capabilities of balcony glazing products, helping developers and builders make informed decisions when selecting and implementing these systems.

In addition to the Rw value, it is essential to consider the D-weighted sound reduction index (Dw) when assessing the sound attenuation performance of balcony glazing. Dw represents the sound reduction across different frequencies, providing a more comprehensive understanding of the system’s effectiveness in reducing street noise.

The range of Dw values for balcony glazing typically falls between 10 and 14 dB [2].

To achieve optimal sound attenuation, it is crucial to minimize sound transmission through other structural elements and communication pathways. This requires careful attention to sealing and construction details, ensuring that potential sound leakage points are effectively addressed. By incorporating appropriate sealing measures and using high-quality materials, the overall sound insulation performance of the balcony glazing system can be enhanced.

It is important to note that the specific sound attenuation requirements may vary depending on the project’s location, local regulations, and individual preferences.

Consulting with acoustic specialists or professionals with expertise in balcony glazing and adhering to relevant standards can help ensure that the selected system meets the desired sound insulation objectives.

References: European Committee for Standardization. (2016). EN 20140-10:2016 Acoustics – Laboratory measurement of sound insulation of building elements – Part 10: Laboratory measurement of the sound reduction index between two adjoining rooms (ISO 10140-10:2015). Brussels: CEN.