FlexiBatt™
FlexiBatt™ is a high-performance flexible fire-rated system designed for simple and effective compartmentalisation in walls and floors for linear gap seals and large openings. When used in conjunction with FlexiCoat-MAK™, it provides a certified firestopping solution offering exceptional movement capability and acoustic performance. The elastomeric FlexiCoat-MAK™ coating allows for up to 50% movement, providing a reliable, flexible seal where structural or service movement is expected.
Constructed from 80kg/m³ stone wool, BOSS FlexiBatt™ is lightweight, highly durable and engineered for ease of installation across cavity barriers, linear joint seals and mixed-service penetrations. It is unaffected by oil and fungus, is halogen and asbestos-free, and contains low VOCs, making it safe and suitable for indoor use. The system provides long-term performance and can be friction-fitted and sealed quickly onsite via trowel, brush or pour application methods.
Applications
- Linear gap seals up to 200mm wide
- Large aperture seals
- Cable & cable tray penetrations
- Appendix D cable configurations
- Steel & copper pipe penetrations
- Insulated Steel & copper pipe penetrations
- Suitable for walls and floors requiring movement capability
Key Benefits
- Provides up to FRL -/240/180
- Highly flexible with movement capability when used with FlexiCoat-MAK
- Low-cost and efficient method of firestopping
- Suitable for large openings in walls and floors
- Easily retrofitted around existing services
- Suitable for use with plumbing, electrical and HVAC systems
- Long lifespan and easy onsite storage
Testing
FlexiBatt™ and FlexiCoat-MAK have extensive fire-test approvals including AS1530.4:2014 and AS4072.1-2005, delivering fire resistance ratings up to FRL -/240/180.
The system is also tested to Branz FAR4572 for performance up to FRL -/240/120 in flexible configurations and is designed to maintain performance under thermal and mechanical movement conditions. Testing supports use across linear seals, cavity barriers and service penetrations in accordance with National Construction Code requirements.
