This is a barrier for non ventilated applications and is ideally suited to prevent fire penetration between adjacent vertical compartments within a rainscreen

Manufactured from high density mineral wool to suit a wide range of cavity depths. They are held in place by a combination of compression and multi purpose brackets.
NVELOPE Fire Cavity Barrier Survey


  • 120 minutes integrity and insulation
  • No air gap
  • Up to 600mm cavities
  • Simple installation
  • Weather-proof and age tested


Tested in accordance with:
BS476: Part 20
BS EN 1363-1 :2020 - Fire Resistance Tests - General Requirements

Safety at the forefront

Passive cavity fire barriers are an accepted method to support the achievement of fire safety requirements. These functional requirements are defined within UK Building Regulations and further practical guidance is described within ADB. Strategies to remediate at risk buildings are latterly considering passive fire control, including cavity fire breaks, in addition to the façade panel and insulation.

Cavities in the construction of a building provide a ready route for the spread of smoke and flame, which can present a greater danger as any spread is concealed.

Fixings for Cavity Fire Barriers

For Barrier Brackets
For Direct Fix


NVELOPE Fire Cavity Barrier Survey

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