Acoustic insulation

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Here at Oscar Acoustics we are specialists in acoustic insulation.  Whether you’re looking to improve the acoustics within a space or reduce sound transfer to/from adjacent rooms, we can help you achieve your project goals.


Sonatherm thermal acoustic insulation is a seamless, decorative ceiling and wall finish that can be applied to most surfaces or constructions.  Sonatherm consists of panels of expanded polystyrene over sprayed with a choice of SonaSpray acoustic finishes to achieve a fire rating and attractive appearance.

View Sonatherm page

  • Building Regulations 2000 Approved document ‘E’ compliant
  • Thermal acoustic insulation
  • Reverberation noise reduction
  • Spray applied one coat decorative finish with EPS substrate
  • Seamless monolithic ceiling, with fire rating

By varying the thickness of the polystyrene slab all permutations of insulation are achieved.  The layer of SonaSpray also means that any sound is absorbed rather than being reflected, considerably reducing reverberation times and therefore reducing overall noise levels.

  • Basements
  • Car Parks
  • Cantilever
  • Balconies

Sonatherm acoustic insulation can also be used for the soffits of walkways, underpasses and balconies.  In any area where it is protected from direct rain, architects can employ the insulating and acoustic properties of Sonatherm to the full.

Celbar recycled acoustic insulation

Celbar acoustic insulation provides superior sound transfer control demanded by designers, owners & occupants.  Typically used as a cavity filler in walls or between floors either in conventional rigid construction or in isolated systems such as our Oscar Iso-Mount range for ultimate soundproofing performance.

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  • Low embodied energy
  • Good for the environment
  • Easy disposal
  • Recyclable
  • Fire retardant

Celbar cavity fill insulation is a blend of recycled specially prepared cellulose fibres, organic in nature and treated to make it fire retardant.

  • Party walls
  • Between floors
  • Venues
  • Hotels
  • Restaurants & pubs
  • Offices

Tests have shown that when packed together, this natural cellulose insulation material is acoustically and thermally more effective than man-made mineral wool.

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