Acoustic Foam

Acoustic Foam is a self adhesive, wave profiled panel made of flexible, polyether acoustic absorption foam. It is self extinguishing and non-drip. Acoustic foam has a wide range of applications in the control of sound reverberation and reflection in industrial environments, recording studios, the sound-proofing of air conduits, firing ranges, the internal lining of engine compartments, sounds enclosures, silencers, sound-proofed cabins, ventilation equipment, etc.

Acoustic Foam Features

  • Absorbs high levels of reflected noise across a broad frequency spectrum
  • Self Adhesive
  • Density – 27/30Kg/m3
  • Soft dark grey polyether foam
  • Fast and easy installation
  • Thermal conductivity coefficient – 0.036 W/m.k
  • Fire Classification – meets the requirements of Schedule 1 Part 1 (Ignition test for polyurethane foam in slab or cushion form) of The Furniture and Furnishings (fire) (safety) Regulations 1988
  • Resistance to temperature – From -30° C to +110°C
  • Panel size – 1000mm x 1000mm x 40mm
  • Surface appearance – Profiled, egg shaped

Acoustic Foam Applications

  • Recording studios
  • Sound-proofing of air conduits
  • Firing ranges
  • Internal lining of engine compartments
  • Sound or acoustic enclosures
  • Silencers
  • Ventilation equipment

Acoustic_Foam_Buildtec

Sound absorption is defined, as the incident sound that strikes a material that is not reflected back. An open window is an excellent absorber since the sounds passing through the open window are not reflected back. Conversely it makes a poor sound barrier. Painted concrete block is a good sound barrier but will reflect about 97% of the incident sound striking it. When a sound wave hits an acoustical material the sound wave causes the fibers or particles of the absorbing material to vibrate. This vibration causes tiny amounts of heat due to the friction and thus sound absorption is accomplished by way of energy to heat conversion. The more fibrous a material is the better the absorption; conversely denser materials are less absorptive.

ProductThicknessSound Absorption Coefficient*
125Hz250Hz500Hz1000Hz2000Hz4000Hz
Acoustic Foam

25mm

0.090.200.410.680.880.94
50mm0.200.510.901.080.941.02

The sound absorption coefficient indicates how much of the sound is absorbed in the actual material. This absorption coefficient varies with the frequency of sound.

*BS EN 20354:1993 : Acoustics. Measurement of sound absorption in a reverberation room

The flexible nature of this acoustic foam allows it to be cut and shaped very easily. With its self adhesive backing, it can be applied to any surface, even curved, provided that it is smooth and free of grease, oil or dust.