Acoustic insulation measures the extent to which incoming sound energy is blocked by a building partition, preventing noise from passing through to the other side. Effective acoustic insulation is essential for creating comfortable living and working environments, especially in areas with high levels of noise. When assessing acoustic performance, different indicators are used based on the source of the noise:

• RA1 is used to assess the acoustic insulation of internal partitions and focuses on sources of domestic noise, such as conversations, music, radio, TV, children playing, as well as moderate-speed railway traffic, expressway traffic, jet aircraft at low altitudes, and industrial noise emitting medium- and high-frequency sounds.
• RA2 is used to evaluate the acoustic insulation of external partitions from sources like urban traffic, low-speed railway traffic, helicopters, distant jet aircraft, nightclub music, and industrial facilities emitting primarily low- and medium-frequency noise.

Additionally, the Rw value, which is determined under laboratory conditions, provides a baseline measure for both RA1 and RA2 ratings.

 

Acoustic Insulation in SYSTEM 3E Elements

Due to its unique material composition, SYSTEM 3E offers excellent acoustic isolation. The weighted average sound insulation index for SYSTEM 3E elements is 45 dB, providing strong protection against noise. Specifically:

• RA1 (Internal Partitions): 44 dB — Suitable for blocking typical domestic sounds, such as conversations, music, and TV noise.
• RA2 (External Partitions): 41 dB — Effective at reducing external noises, such as traffic or industrial sounds.

These values make SYSTEM 3E technology an attractive solution for creating quiet, comfortable spaces, particularly in residential or mixed-use buildings.

 

Comparison to Other Materials

A direct comparison of acoustic insulation across different construction materials can be challenging due to variations in material density and wall thickness. However, at a thickness of just 352 mm, SYSTEM 3E offers competitive acoustic performance, comparable to or exceeding that of heavier masonry elements typically used to achieve higher sound insulation.

 

Conclusion

SYSTEM 3E provides effective acoustic insulation while maintaining a lightweight and energy-efficient design. With a high sound insulation index (RA1 = 44 dB, RA2 = 41 dB), SYSTEM 3E elements create quiet, peaceful indoor environments, making them a reliable and efficient alternative to heavier materials. Whether for internal or external partitions, SYSTEM 3E technology helps achieve enhanced comfort and improved acoustic privacy in modern buildings.