GLASS OFFICE ACOUSTICS GUIDE

A comprehensive guide to noise reduction in glass office acoustics

Open Office plan with a glass partition meeting room

To keep your workspace quiet and focused, you need to stop sound travelling.

Sound, including normal speech, will travel through some glass partitions, while others will block all but the loudest noises.

The table below shows the acoustic performance of each type of glass partition, depending on glazing and thickness. Other things that will affect performance include suspended ceilings, air grills, conditioning ductwork and transition details between walls. These and other factors mean that the acoustic performance of a partition revealed by a test can be up to 5dB higher than its real-world performance.

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Weighted Sound Reduction Index (Rw) Speech Privacy Level System
25 dB Normal speech can be overheard Single Glazed
30 dB Loud speech can be heard clearly Single Glazed
35 dB Loud speech can be heard and distinguished in normal conditions Single Glazed
40 dB Loud speech can be heard but not distinguished Double Glazed
45 dB Loud speech can be heard faintly but not distinguished Double Glazed
50 dB Loud speech can only be heard faintly with great difficulty Double Glazed

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