Quietstone Expanded Glass Beads

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Expanded recycled glass granules

Expanded Glass Granulate is produced of recycled glass applying a patented technique.Treated breakage of glass is fine-ground, mixed and formed. The granulate is sintered and expanded at a temperature of 750°C to 900°C in a rotary kiln. An ecological product made of mineral raw materials is produced this way.

Sound Absorption

Sound absorption or noise deadening, is one of the key properties of Quietstone. The structure of the material is designed to take in and absorb the sound energy. This unwanted sound is then lost or transmitted away thus ‘deadening’ the noise.

Fire Proofing

Fireproof is one of the key properties of Quietstone. Fire protection is a valuable property required in a range of applications, from tunnel linings to marine engine rooms.



Thermal Insulation

Quietstone products offer excellent thermal insulation. Our products can be used to insulate buildings to reduce heating costs or insulate engine rooms or industrial process areas to contain excessive heat.


  • Lightweight concrete
  • Heat insulating fillings
  • Acoustic panels
  • Render panels
  • and more..

Technical Specifications

Min. bulk density<200g/l

Crushing resistantCa>2N/mm2

Heat and cold insulationλR = 0,07W(m/K)

Non-CombustableA1 according to DIN 4102

Quietstone Acoustic Products
Quietstone UK Ltd

Nab Quarry, Pott Shrigley, Macclesfield, Cheshire, SK10 5SD