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Pyrosorb-S Class 0 acoustic foam sheets

At eFoam, we supply fully certified Class 0 Foam Sheets for fire safety and noise control. Our UK-manufactured Pyrosorb-S Class 0 foam provides outstanding acoustic performance, fire resistance, and is available to buy in sheets or cut to any size and shape. Whether you need Class 0 acoustic foam for studios, construction, public buildings or residential properties at eFoam we are here to help with expert advice. Order your Class 0 foam sheets with self-adhesive backing today and enjoy FREE and FAST delivery.


UK's largest Pyrosorb-S Class 0 acoustic foam supplier


Pyrosorb-S Class 0 accredited foam is a superior grade of foam in its class, manufactured in the UK and distributed worldwide by Efoam.

Pyrosorb-S Class 0 acoustic foam sheet

Pyrosorb-S is a class 0 accredited cellular acoustic foam. Safe and easy to install. Includes self-adhesive backing.
 Sheet size:


 at thickness: 
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Pyrosorb-S Class 0 convoluted acoustic foam sheet

Convoluted/eggcrate Pyrosorb-S is a class "0" accredited cellular acoustic foam. Safe and easy to install.
 Sheet size:


 at thickness:  
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Pyrosorb-S class 0 acoustic foam tile pack

Pyrosorb-S class 0 accredited cellular acoustic foam tiles with self-adhesive backing. Safe and easy to install. In 4 thicknesses, the 2 are chamfered (bevelled edges) the thinnest is flat with no chamfer, and the last one is convoluted egg profile. More information here.
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Quantity:     Price: £    


What is Class 0 Acoustic Foam?

Class 0 foam is a fire-retardant open cell polyurethane foam which complies with the UK’s fire regulations (BS 476 Parts 6 & 7). It is designed to limit flame spread and heat release, in turn offering maximum protection wherever Class 0 foam is applied. Compared to fibrous insulations, Class 0 acoustic foam is flexible, non-irritant, lightweight and can easily be cut to any size or shape to fit any installation requirement.


Why Choose eFoam’s Pyrosorb-S Class 0 Foam?

  • Certified to BS 476 Class 0 fire safety standards.
  • Manufactured in the UK with strict quality control.
  • Non-fibrous, non-toxic, safe and easy to handle.
  • Trusted by professionals in various industries.
  • Added benefit of outstanding acoustic performance.
  • Fast and Free UK-wide delivery with large stock availability.

Key Applications for Class 0 Acoustic Foam

Pyrosorb-S Class 0 foam is used across industries where both fire safety and noise control are crucial:

  • Ductwork insulation.
  • Acoustic wall panels such as in recording studios.
  • Commercial offices, public buildings and residential housing.
  • Automotive and marine insulation.
  • MOD vehicles, prisons, and hospitals.
  • Boiler rooms, generator rooms, control rooms, and plant equipment.

Whatever the requirement you can trust eFoam’s Class 0 acoustic foam’s performance to comply with fire regulations and superior sound management.


How Does Class 0 Foam Achieve its Superior Performance?

Class 0 foam achieves the superior fire resistance by combining fire retardant additives into the polyurethane foams structure. This leads to compliance with BS 476 Part 6 (Fire Propagation test), and BS 476 Part 7 (Surface Spread of Flame Test).

In addition to the Class 0 foams fire performance, it also features an open-cell structure allowing the foam to absorb sound energy, reducing reverberation and improving sound clarity in enclosed spaces.

Class 0 foam can also be precisely cut to size, so installers can fit the Pyrosorb-S Class 0 foam into ductwork, wall cavities, ceilings, machinery housings and much more, easily and efficiently ensuring seamless integration into any project.


Advantages of Class 0 Acoustic Foam vs Traditional insulation

  • Superior Fire Safety - Meets Class 0 standards required by many UK building regulations.
  • Acoustic Performance - The open-cell design absorbs sound frequencies allowing for easy noise control paired with fire safety.
  • Lightweight & Flexible – Much easier to handle and work with compared to traditional insulation boards.
  • Non-Fibrous – Safe for installers with no respiratory irritation.
  • MOD vehicles, prisons, and hospitals.
  • Easily Cut to Size – Pyrosorb-S is easily cut to size to meet any project size requirements. At eFoam we provide this service please go to our foam cut to size page to find out more.
  • Pyrosorb-S foam can also be die-cut to produce bespoke components using the Class 0 foam.
  • Class 0 acoustic foam does not erode or migrate in air movement (up to 6,000 ft/min, 2,800Mt/min)

Frequently Asked Questions


What makes Pyrosorb-S Class 0 foam unique?

Pyrosorb-S Class 0 foam is fully compliant with UK fire safety standards. This allows it to offer industry leading fire resistance whilst also offering excellent sound absorption, and it can be easily cut to size to meet any requirements.

Is Class 0 foam required by building regulations?

Many commercial, educational, healthcare and public buildings require Class 0 fire rated materials to meet the UK building regulations and fire safety codes.

Do you offer Class 0 acoustic foam cut to size?

Yes, at eFoam we specialise in foam cut to size services to meet your exact specifications. Simply input your measurements that you require, and we’ll provide precision cut Pyrosorb-S Class 0 foam ready for installation.

Is Pyrosorb-S Class 0 foam safe to handle?

Most certainly. Pyrosorb-S acoustic foam is non-fibrous, non-toxic, and safe for installers to install in all environments.

Does Class 0 acoustic foam come with self-adhesive backing?

Yes, Class 0 acoustic foam sheets come with self-adhesive backing as standard. This ensures ease of installation.


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