FV025 Small Ventilated Cavity Barrier

Small Ventilated Cavity Barrier

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FV025 Small Ventilated Cavity Barrier is suited to an open state cavity of up to 25 mm, manufactured from a directionally expansive intumescent material encapsulated in a foil barrier.

Fire Rating: 60 Minutes


FV025 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 FV025 will expand to close the external wall cavity, providing effective fire resistance, for integrity and insulation for up to 60 minutes depending upon the performance ability of the external walls. FV025 is designed for use within a 25 mm cavity, and once installed will close the remaining free air gap (in front of the 4 mm thick cavity barrier) of 21 mm.

Always read SDS, pre-application guidance and relevant application detail prior to application. Ensure the latest documents are downloaded prior to every project commencement.

Safety data sheet must be read and understood before use.

  • Up to 60 minutes fire resistance tested in accordance with ASFP TGD19 guidance
  • Allows maximum ventilation of cavities reducing the need for cavity trays or weepholes.
  • Suitable for “open-state” ventilated cavities up to 25 mm wide.
  • Lightweight - easy & quick to install
  • Low smoke zero halogen high expansion intumescent material.
  • Water repellent resistant.
  • No maintenance required after installation.
FV025 Performance Table (en-GB).pdf Performance Table
FV025 Safety Data Sheet (en-GB).pdf Safety Data Sheets
FV025 Technical Data Sheet (en-GB).pdf TDS
Nullifire Cavity Barriers Leaflet (en-GB).pdf Brochure