C1/3 Professional Pyro-Tech Acoustic Curtain | Soundex

C1/3 - SOUNDEX® Professional Pyro-Tech® Acoustic Curtain

A unique product that was developed in conjunction with the London Underground to the extremely stringent BS6853:1999 fire standard.

The C1/3 SOUNDEX® Pyro-Tech® curtain is the only Class 0 fire rated acoustic barrier currently available which can be used in sub-surface environments including areas within the London Underground. Its unique construction means it complies with the BS6853:1999 fire standard whilst retaining excellent acoustic properties.

Each fire resistant curtain can be used to create any size of enclosure to ensure optimum acoustic performance. They are uniquely constructed with Velcro down either side to ensure a seamless noise barrier with eyelets positioned on all edges to enable suspension from site fencing, scaffolding, timber hoarding’s and many other substrates. The design of the curtains allows them to be folded and laid flat without damage to the acoustic core for easy storage and transportation.


  • Class 0 fire resistance to BS6853:1999
  • Up to 32.5dB reduction in noise
  • Excellent noise absorption
  • Independently tested and certified to BS EN ISO 717-1 : 1997; BS EN ISO 345 : 2003; EN ISO 11654 : 1997
  • Lightweight - 5.0Kg
  • Easy palletised transportation
  • Fully printed personalisation available
Download Data Sheet


Acoustic Performance
Maximum Sound Absorption
45% @ 250Hz
96% @ 1250Hz
65% @ 5000Hz
Maximum Sound Attenuation
7.9dB @ 250Hz
17.2dB @ 1250Hz
32.9dB @ 5000Hz
Technical Specifications
Size 1250 x 2050mm
Weight 5.0Kg
Fire Ratings
Tested & Certified To BS6853: 1999 Incorporating Amendment No. 1

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