Silverliner® Non-Ventilated Cavity Barrier

Silverliner 03

Silverliner® Closed State Cavity Barrier has been developed to protect the voids between the outer facade and the inner construction element of the building in the case of a fire. This “closed state”Cavity Barrier has a 30mm wide flexible intumescent edge which allows for movement in the cavity. The aluminium foil facing provides class ‘O’ rating and is an excellent smoke barrier.

  • Rigid Floors

Areas of Use:

  • To provide fire protection in cavities between the inner construction element and outside facade
  • Where “closed state” voids specified
  • Where movement is required
  • Assumed working life 25 years
  • For internal use


  • Very fast installation,
  • Bracket fit system
  • For use in voids up to 350mm wide
  • Stone based, none combustible core
  • Dry fit solution, no curing time

Certification & Testing

  • Tested in accordance with BS 476pt 20/22

Non Vent Open State


Cavity Barrier TDS Jan 2024
Technical Data Sheet (TDS)
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Silverliner Cavity Barrier NV PID Sept 2018
Product Information Document (PID)
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Silverliner Open State Cavity Barrier SDS Aug 2018
Safety Data Sheet (SDS)
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