PARAFLAM® SEB Vertical Cavity Barrier

Paraflam® cavity barrier is a perimeter fire stop designed for external rainscreen facades. 

Manufactured as a non-combustible stone wool based product with a foil facing which prevents fibre migration and provides an excellent seal.

It is designed to reinstate the fire resistance of a compartment, as well as offering good thermal and acoustic performance

Typically used a vertical cavity barrier at corner junctions, wall partitions and around window openings, it is installed as a full fill barrier using compression. 

The Paraflam comes in 1200mm x 1000mm slabs and is available in thicknesses of 75mm, 100mm & 125mm. 

Fire resistances of EI30, EI60 & EI120 available, tested up to a cavity size of 590mm

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  • Downloads
  • Approvals
  • A1 rated to EN 13501-1:2018 Fire Classification. 

    Fire resistance up EI120 when tested to EN 13501-2 

    EN ISO 10140-2:2010 Acoustic Rating up to 34dB

    EN1366-4 fire resistance test for service installations. 





  • Technical Characteristics
  • Fire Resistance Up to 120 minutes
    Reaction to Fire Class A1
    Acoustic Up to 34dB
    Air Permeability 600 Pa 0.4m3/h
    Durability Type Z
    Thermal Conductivity 0.034w/mK
    Cavity Size Up to 590mm
    Movement <7.5%


    Size (WxL) 1200mm x 1000mm (pre-cut lengths available)
    Thickness 75mm, 100mm, 120mm
    Density Nominal 80kg/m³
    Appearance Aluminium Foil
    Weather Resistance Yes
    Storage Conditions To be stored in dry conditions


  • Building Materials
  • Block, masonry, aerated concrete and concrete must be within a density range of 450 to 2300kg/m³. CP
    (cement particle) board and concrete cladding must be within a density range of 450 to 2300kg/m³. Timber
    must have a minimum density of 510kg/m³. All substrates must have at least the same Fire Resistance as is
    required by the fire stopping system.

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