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25 mm thick decorative, highly sound-absorbent ceiling and wall covering with either a stucco or plaster smooth finish.

Features and benefits:

  • Controls sound reverberation in buildings by absorbing sound energy instead of reflecting it, thereby reducing reverberation times and overall noise levels, giving clarity to speech and music.
  • It can be applied directly onto Gyproc board, smooth concrete, steel sheet and most other surfaces.
  • Suitable for flat, domed and vaulted soffits.
  • Available in two surface finishes and a variety of colours.
  • Quick and easy to install.
  • The standard white finish provides a light reflectivity of 94%.
  • Easy to maintain through vacuuming or dusting.
  • Can be over-sprayed in a different colour if required.

Typical applications:

Restaurants, office reception areas and high specification apartments and houses where the designers' desire for hard flat surfaces can lead to noise reverberation problems. Not suitable for walls below 2 m from the floor.

Consult Oscar Acoustics for relevant preparation details.

Related literature

The following content references this product:

Standard product features


A high density 20 mm thick acoustically absorbent base board, an acoustically transparent 3–4 mm thick base coat that keys to the acoustic board and has flexibility to minimize cracking, followed by a 1 mm thick synthetic top coat that can be trowelled, then sanded when dry to a plaster-like smooth finish.

Weight (25 mm thick, dry):

4.9 kg/m².

Fire rating:

  • Class 0 (to BS 476-6).
  • Class 1 (to BS 476-7).
  • A2-s1,d0.

Sound absorption coefficient according (to BS EN ISO 354):

  • 125 Hz: 0.12 (25 mm on solid substrate), 0.15 (25 mm on 12.5 mm gypsum board with 200 mm void).
  • 250 Hz: 0.44 (25 mm onto solid substrate), 0.36 (25 mm on 12.5 mm gypsum board with 200 mm void), 0.44 (25 mm on solid substrate).
  • 500 Hz: 0.81 (25 mm onto solid substrate), 0.77 (25 mm on 12.5 mm gypsum board with 200 mm void).
  • 1000 Hz: 1.02 (25 mm on solid substrate), 1.01 (25 mm on 12.5 mm gypsum board with 200 mm void).
  • 2000 Hz: 0.91 (25 mm on solid substrate), 0.91 (25 mm on 12.5 mm gypsum board with 200 mm void).
  • 4000 Hz: 0.87 (25 mm on solid substrate), 0.89 (25 mm on 12.5 mm gypsum board with 200 mm void).

Coating thickness:

Apply at a minimum thickness of 25 mm, including the high density mineral batt, primary coat and top coat.



White as standard; a range of special colours are also available.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
25-85-85/175 Sprayed internal monolithic coating system

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Oscar Acoustics


+44 (0)1474 854902

Product reference

[Oscar Elite]
Trowelled and sanded to a smooth plaster finish.
[Oscar Elite S]
Stucco finish.


[Fixed directly to the substrate]
[Fixed to an MF ceiling, plasterboard taped and jointed with an air gap behind the plasterboard]

Barrier/ Bonding coat

[ ______ ]

Finishing/ Sealing coat

[ ______ ]


[Special order]
Consult Oscar Acoustics and insert requirements.


['F trim' white PVC-U bespoke stop bead]
For downlighters, etc., can be specially manufactured for each project.
[Natural finish aluminium stop bead]
Can be powder coated.

Manufacturer details

Crowhurst Barn,
Crowhurst Lane,
West Kingsdown,
Kent, TN15 6JE
Tel +44 (0)1474 854902
Fax +44 (0)1474 853337
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NBS National BIM Library