Acoustic insulation

General information

General information Acoustic absorption Sound reduction

Unheard advantages - ISOVER insulation solutions for acoustic applications


Insulation Optimal Acoustic Performance

Acoustic in industry

Industrial installations often operate with high velocity fluids and pressure flows, or specific mechanical equipment which can cause high levels of noise emission. Acoustic insulation is then essential for two reasons - to protect the health of personnel working  on site by ensuring a safe and sound working environment and to reduce average ambient noise level of a site particularly in the proximity of urban and residential areas.

To reduce sound emissions, it is very important then to identify which part of the transmission is solid (structure-born, impact sound), or airborne as well as the properties of the sound wave (frequency spectrum).


Airborne sound

As the name suggests, sound is transmitted through air. The source is generally easy to identify and transmission is propagated directly via air to the receiver, by vibration of air molecules. However, if there is a wall or barrier between the source and the receiver, the sound is transmitted into the construction and then radiated into the air again on the other side of the obstruction. Examples include the human voice, emissions from process equipment and sound transmission along duct networks.

Impact sound

The result of impact or shock to the building structure that produces vibrations transmitted through the structural elements. Typical examples of this type of noise are footsteps on floors, doors closing and vibrations produced by operating machinery which are transmitted through structural supports.


ISOVER solutions offer a wide range of mineral wool solutions for optimal acoustic insulation.

ISOVER mineral wool solutions have high longitudinal air-flow resistance (up to 100 kPa•s/m²) and uniform porosity (93-99%), resulting in high sound attenuation levels. The outstanding performance of ISOVER mineral wools is a direct result of their elastic properties (low elasticity modulus) and makes them superior to other insulating materials, such as plastic rigid foams.