Nullifire FJ220 Intubatt 3 Cavity Barrier

• Up to 2 hours fire resistance - Tested to both BS 476 20-22 and BS EN 1366-4.
• Cost effective solution.
• Easy to install and inspect
• 52 dB acoustic performance
• Optifire unique traceability identifier.

Nullifire FJ220 is a fast-fit, flexible fire seal designed for curtain wall and slab edge applications. It requires no fixings for horizontal gaps up to 200mm when used against a non-combustible building envelope. In addition to providing fire protection, the system offers an acoustic capability of up to 52 dB (floor slab), depending on the substrate. It is suitable for various applications, including floor seals, slab-to-slab, slab-to-cladding, slab-to-blockwork, and slab-to-glazing. To create an effective smoke seal, the application of FS702 Intumastic to all joints and substrates is necessary.

What level of fire resistance does Nullifire FJ220 provide?

FJ220 provides up to 120 minutes (2 hours) of fire resistance, making it highly effective in preventing the spread of fire through expansion joints during a fire event.

How does Nullifire FJ220 accommodate movement in expansion joints?

The FJ220 slab’s compressible nature allows it to accommodate the natural expansion and contraction of building materials due to temperature fluctuations, while maintaining its fire protection performance.