FV125 Large Ventilated Cavity Barrier

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FV125 Large Ventilated Cavity Barrier is a specially formulated fire rated rock mineral fibre section with an integral high expansion intumescent seal attached to the leading edge, suited to an open state cavity with a maximum air gap of 25 mm.

Fire Rating: 180 Minutes

Usage/purpose

FV125 is a fire rated product designed to act as an external wall cavity barrier at the required locations such as compartment floors, around windows, doors, etc. and within uninsulated cavities requiring permanent (open-state) ventilation, to reinstate fire resistance performance. In the event of a fire FV125 will expand to close the final gap between its leading edge and the internal face of the cladding. It provides effective fire resistance, for integrity and insulation for up to 180 minutes depending upon the construction of the external walls. FV125 is designed for use within a designed cavity of up to 450 mm, and once installed will close the remaining free air gap (in front of the 4 mm thick cavity barrier) of 25 mm.

  • Enhanced for 60 minutes fire resistance tested in accordance with ASFP TGD19 Guidance
  • Maintains a 25 mm air gap.
  • Up to 450 mm cavities tested.
  • Fixing brackets included as standard.
  • Allows ventilation of cavities, reducing the need for cavity trays or weepholes.
  • Lightweight for easy and quick installations.
  • No maintenance required after installation.
FV125 Performance Table (en-GB).pdf Performance Table
Safety Data Sheet FV125 (en-GB) Safety Data Sheets
NF_FV125_technical datasheet_Large Ventilated Cavity Barrier_en-GB_v2.pdf TDS
Nullifire Cavity Barriers Leaflet (en-GB).pdf Flyer