Pyrosorb-S is a cellular acoustic foam which is class “O” accredited. Class O foam is flexible, non-irritant and self-adhesive making it a safe and easy to install product. It has been used in many prestigious projects throughout the world and has proven durability. It is also easy and safe to cut and shape. It readily accepts facings and acoustic barrier layers.


  • A safer alternative to conventionally used products.
  • Does not erode or migrate in air movement (up to 6,000 ft/min, 2,800Mt/min).
  • Easy and safe to handle, reducing labour costs.
  • Excellent sound absorption.
  • Fire resistant.
  • Non fibrous and therefore avoids the potential health hazards associated with fibrous products.
  • Open celled and flexible with a high density.

Class O foam may be used in almost any application requiring absorption or containment of noise:

  • Acoustic wall panelling and enclosures
  • Air-conditioning equipment and duct systems
  • Automotive and Marine applications
  • Engine bay compartments
  • Generator rooms
  • M.O.D. vehicles
  • Prison mattresses

More information on Pyrosorb-S Class 0™.

We supply sheets in 2 x 1 metre sheets in various thicknesses. They include self-adhesive backing options for ease of installation.

For other sizes, or cut to size, please contact us with your requirements.