SOTTOVOCE: THE SOUND-ABSORBING PLASTER FOR SPACES WHERE ACOUSTIC COMFORT MAKES THE DIFFERENCE

Spray-applied, Edilteco’s lightweight sound-absorbing plaster reduces reverberation in high-occupancy indoor spaces, improves speech intelligibility and creates continuous surfaces, with reaction to fire class A2-s1,d0.

Emanuele Stabellini – Marketing Manager, Edilteco S.p.A.

In public spaces, noise is not just a nuisance: it affects the quality of the experience, concentration and the overall perception of the space. Classrooms, canteens, restaurants, conference rooms, places of worship and hospitals are settings where reverberation can impair speech clarity and cause discomfort.

Sottovoce, Edilteco’s lightweight sound-absorbing plaster designed for controlling reverberation in indoor spaces, was developed to meet these needs in a practical way.

Sottovoce: the plaster that absorbs sound

Sottovoce is a sprayable sound-absorbing plaster, formulated with hydraulic binders, lightweight components and specific additives that enable it to absorb sound waves and reduce sound reflection inside rooms.

The result is a more acoustically balanced space, with:

• better speech intelligibility;
• less listening fatigue;
• greater comfort for those who use the space every day.

In a classroom this means supporting learning; in a conference room, ensuring clarity during presentations; in a canteen, reducing background noise; in a place of worship, preserving contemplation and listening quality.

Aesthetic integration

One of the main advantages of Sottovoce is its ability to blend into the architecture.

Unlike traditional sound-absorbing panel systems, Sottovoce creates a continuous, uniform surface with no visible joints, and adapts even to irregular or complex geometries.

It is available in white, gray and anthracite gray finishes, with a clean, elegant appearance suitable for both public buildings and private settings.

Easy application on site

Sottovoce is supplied in ready-to-use bags and only requires the addition of water to obtain a pumpable mix that is easy to apply with suitable plastering machines.

Spray application makes it possible to work on various substrates, including:

• gypsum board;
• concrete;
• steel.

The minimum applicable thickness is 1/2 in (13 mm): installation is therefore fast and efficient even on large surfaces.

This ease of use makes it suitable for both new buildings and upgrading and renovation projects.

Application of Sottovoce from a thickness of 1/2 in (13 mm)

Performance and safety for public spaces

In addition to acoustic comfort, Sottovoce also meets safety requirements.

It is classified in reaction to fire class A2-s1,d0 according to EN 13501-1, a fundamental requirement for high-occupancy buildings such as schools, theaters, hospitals and places of worship.

Acoustic performance and fire safety thus come together in a single solution, which simplifies design and ensures compliance with regulations without sacrificing aesthetics.

Find out more about Sottovoce

An informed choice

Sottovoce is formulated with regranulated EPS and thus contributes to a more responsible approach that respects the principles of the circular economy.

With its low density and low thermal conductivity, it also contributes to the overall comfort of the room, combining acoustic benefits and building quality.

Sottovoce, lightweight sound-absorbing plaster for reverberation control in indoor spaces