This demonstration video compares the sound absorption capabilities of three popular insulation materials using scientific testing methods. Through controlled testing with a sound meter and alarm system, the video reveals that cellulose fibre insulation achieves the lowest sound reading at 39.6 decibels, significantly outperforming both fibreglass insulation (53.4 dB) and polyester insulation (57.9 dB).

The video also educates viewers about the 3-decibel trading effect rule, explaining how seemingly small differences in sound levels can have major impacts on hearing health and noise pollution. This makes it clear why choosing the right insulation material is crucial for both acoustic comfort and occupant well-being.