Nullifire FV025 Small Ventilated Cavity Barrier - 35mm x 1000mm

• 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

External Walls: Nullifire FV025 is a fire-resistant barrier and intumescent material designed for sealing joints and penetrations in fire-rated walls, floors, and ceilings. It expands when exposed to heat, effectively closing gaps and preventing the spread of fire, smoke, and gases through penetrations in building elements. FV025 is used to maintain the integrity of fire-rated structures and is ideal for installations in areas where firestopping is required, ensuring compliance with fire safety regulations. This product is versatile and can be applied across a wide range of building materials, offering reliable protection in critical fire safety applications.

How does FV025 work?

The barrier allows ventilation under normal conditions but expands in the event of a fire, sealing the cavity to prevent the passage of flames and smoke.

How is FV025 installed?

• Measure and cut the barrier to fit the cavity dimensions
• Secure the FV025 barrier using mechanical fixings or as per the manufacturer’s guidelines
• Ensure proper alignment and airflow through the barrier before finalizing the installation

Does FV025 affect ventilation?

No, FV025 is designed to maintain ventilation in normal conditions while providing fire protection in the event of a fire.