Product description



  • Offering up to 44dB (Rw)
  • Custom profiled to suit aperture / roof deck
  • Can be used in conjunction with SIDERISE firestops


SIDERISE acoustic void closures are a range of bespoke products designed to effectively close small apertures and voids encountered in a wide range of building conditions.

They are produced from a range of resilient materials or laminated composites and are intended to be compression fitted into an aperture to form an efficient acoustic seal.

Note: This product was previously known as Lamaphon AVC acoustic void closures.