FireSilicone-EMA: Flexible, High-Performance Fire & Gap Sealant for Modern Builds
FireSilicone-EMA™ delivers trusted fire protection with flexibility and weather resistance for sealing joints, metallic service penetrations and linear gaps in both new builds and retrofit work. It’s a single-component silicone designed to perform where fire, smoke, acoustics or flexibility matter.
What Makes FireSilicone-EMA™ Work
- Up to 4 hours fire protection — FireSilicone-EMA is fire-rated for up to four hours, and offers systems for both horizontal and vertical installations, when used as per the certifiction reports.
- Large joint capacity — Capable of sealing joints and gaps up to 100 mm wide with appropriate backing materials. Ideal for expansion joints, metallic service penetrations in external environments or wet areas.
- High flexibility and movement tolerance — The sealant handles joint and substrate movement (approx ± 25%) without cracking or losing seal integrity.
- Sound and smoke sealing — Provides acoustic isolation and prevents smoke or gas passage, useful for exterior walls such as factories or warehouses.
- All-weather and durable — Designed to be weather-resistant, waterproof when cured, and suitable for both internal and external joints or penetrations.
- Wide substrate compatibility — Adheres strongly to both porous and non-porous materials such as concrete, masonry or blockwork.
Where FireSilicone-EMA Excels
FireSilicone-EMA™ is ideal in a wide range of applications across commercial, residential and industrial developments:
- Expansion and contraction joints in concrete slabs or external walls
- Curtain walling perimeter seals and glazing joint-sealing
- Door frame perimeters and fire-rated door installations
- Concrete, blockwork, masonry or fire rated plasterboard service penetrations
- Service penetrations including cables, or steel, copper & iron pipes
- Linear gaps that require movement or flexibility
- Seismic airtight smoke seal on FyreBox™
It performs whether sealing internal partitions or exterior joints exposed to weather.
Simple Installation Workflow
- Prepare all joint surfaces — clean, dry, free of dust, grease or contamination.
- Use a backing rod or other suitable backing material in accordance with the tested system.
- Apply FireSilicone-EMA™ with a caulking gun into the joint to the appropriate depth and width.
- Tool the sealant to a smooth finish.
- Ensure minimum sealant depth (as per tested system. — Some joints offer as low as 5 mm depth.
- Once cured, the seal is flexible, durable and ready to perform under fire or environmental stress.
The one-part, neutral-cure silicone is easy to apply and offers a cost effective solution.
FAQ
Q: Can it seal wide joints or gaps?
A: Yes. It is approved for joint and gap widths up to 100 mm wide with appropriate tested backing materials.
Q: Does it offer weather resistance for external use?
A: Yes. FireSilicone-EMA™ is weatherproof, UV resistant and suitable for both internal and external applications.
Q: Will it accept movement without failing?
A: Yes. The sealant remains flexible and accommodates joint movement of approximately ± 25%.
Q: Can it seal both metal pipes and cables?
A: Yes. It carries test approvals for steel, copper & iron pipes along with varies cable penetrations, often requiring a thermal wrap. Check the appropriate test and assessment reports for further information on the tested systems.
Q: Is it suitable for fire-rated penetrations?
A: Yes. It carries test approvals for steel, copper & iron pipes along with varies cable penetrations, often requiring a thermal wrap. Check the appropriate test and assessment reports for further information on the tested systems.
Ready to Seal With Confidence
If you’re planning expansion joints or gap seals in fire-rated walls, partitions or concrete slabs,, FireSilicone-EMA™ offers a reliable, flexible, all-weather solution.
Contact the BOSS Fire team to talk through your project requirements and ensure you select the correct seal system for compliance and performance.
Want to Know More?
BOSS Fire can provide full technical guidance, installation details and project support. Get in touch if you would like help selecting the right fire stopping system for your build.
