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Monolithic, acoustically rated system for direct fixing to ceilings and walls.

Features and benefits:

  • Suitable for ceilings and walls in new build or renovation projects.
  • The monolithic surface provides acoustic comfort and fire protection.
  • Non-demountable.
  • Comprised of a 40 mm stone wool panel, filler and render.
  • Can be flat or curved, and direct or suspended installation.
  • The white surface provides high light reflection and light diffusion, providing even light distribution and reducing the need for artificial light.
  • A seamless system that allows for easy integration of all services and the possibility to repair the surface.
  • Fully recyclable.
  • Stone wool provides no sustenance to microorganisms (tested in accordance with JIS Z 2801: 2000 and ASTM C 1338-96).

Recommended installation system:

TE edge detail: Rockfon® System Mono Acoustic™.


  • Office.
  • Education.
  • Leisure.
  • Retail.

Fire resistance:

Achieves up to 60 minutes in accordance with European test standards and national approvals. Contact manufacturer for fire resistance documentation.

General information
Specification data
Product Reference

Rockfon® Mono® Acoustic, Direct

Module size

1200 x 1200 mm

1800 x 1200 mm


Direct TE Elegant Render

Standard product features


40 mm.


6 kg/m².

Direct sound insulation (Rw, to ISO 140-3):

22 dB.

Surface finish:

  • Visible side: Seamless acoustic render.
  • Rear side: High performance membrane, supplied with a mineral fleece.


White (consult manufacturer for bespoke colour options).

Light reflection (to ISO 7724-2):


Light deflection:


Visual appearance (whiteness L value to ISO 7724):


Reaction to fire (to EN 13501-1):


Humidity and sag resistance:

  • Dimensionally stable, even at humidity levels of up to 100% RH.
  • No visible deflection in high humidity.


  • Vacuum: The surface can be vacuum cleaned with a soft brush attachment.
  • Damp cloth: The surface can be cleaned using a damp cloth or sponge with a slightly alkaline detergent (pH between 7 and 9) without alcohol, ammonia or chlorine. This may render the surface slightly shinier; manufacturer recommends cleaning the entire surface evenly.

Product Options

Minimum suspension height:

40 mm.

Noise reduction coefficient (NRC):


Sound absorption (to ISO 11654):

αw: 1.0; Class A.