The FIREFLY® Phoenix Vertical Fire Barrier is a lightweight, flexible, and installer-friendly passive fire protection solution, designed exclusively for vertical applications. Manufactured from high-performance woven glass fibre with a proprietary fire-resistant coating, Phoenix is engineered to provide up to 120 minutes of integrity-only fire resistance, making it ideal for vertical smoke and flame compartmentation in large roof voids and industrial settings.
Certified by IFCC (Certificate No. IFCC 1418) and tested to BS 476 Parts 20/22:1987, the system is proven to restrict flame and smoke spread effectively, even when installed around penetrations and services.
Key Features:
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Tested to BS 476 Parts 20/22 for 120 minutes fire integrity
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Third-party certified by IFCC/Kiwa (Cert No. IFCC 1418)
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Designed for vertical use only – ideal for compartmentation at 20m intervals
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Self-extinguishing woven glass fabric (Class “A” rating to BS 5438/6249)
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Lightweight and flexible for easy handling and installation
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Supports penetrations and ceiling systems while maintaining performance
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Compatible with full range of FIREFLY® installation accessories
Common Applications:
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Industrial roof voids
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Warehousing
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Food processing facilities
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Data centres
Specifications:
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Material: Woven glass fibre (3/1 Broken Twill)
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Coating: High-temp proprietary chemical finish
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Thickness: 0.34mm (nominal)
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Weight: 440g/m² (nominal)
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Roll Width: 1.3 metres
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Roll Lengths: 10 or 25 metres
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Thermal Conductivity: 1.0 W/mK
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Tensile Strength: Warp 3840 N/50mm, Weft 2240 N/50mm
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Colour Options: White or black
Compliance:
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Complies with BS 476 Parts 20/22 (Integrity only)
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Exceeds guidance in Approved Document B (England & Wales)
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IFCC Field of Application covers drops, penetrations, and installation details
Installation Notes:
Use only for vertical applications. For horizontal fire barrier systems, refer to FIREFLY® Phoenix Horizontal. Installation should follow manufacturer guidelines and use approved FIREFLY® accessories.