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Protect FrameSafe FR Class A2 external flame retardant breather membrane

Protect FrameSafe FR is a high performance, Class A2 flame retardant wall breather membrane, designed for use on the external side of the frame to integrate with closed jointed façade wall structures on low, medium and high rise buildings. Protect FrameSafe FR exceeds Building Regulations Approved Document B for fire safety for structures over 11m in height, with suitability for higher risk  buildings as defined in the Building Safety Act. This ensures peace of mind and assurance in specification, being future proofed against future regulation changes.

Featuring an intricately woven glass fibre fabric with a uniquely developed waterproof and fire resistant coating, Protect FrameSafe FR provides a primary line of protection to the whole of the external wall during the construction process and once built ensures a second line of defence against rainwater penetration, whilst offering added protection against fire spread.

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Features & benefits

  • Designed for use on low and medium rise structures over 11m as well as tall building applications over 18m where full rainscreen cladding systems are installed.
  • Fully compliant with EN 13501-1 and exceeds requirements in Building Regulations Approved Document B.
  • Fire tested by third party laboratory as a system with Protect FR tape, Protect FrameSafe FR achieves
    Class A2-s1, d0 reaction to fire, ensuring integrity of product specification across all building heights.
  • Improves the fire performance of the overall wall structure.
  • Strong UV stability – exposure up to six months to suit high rise developments.
  • Ideal for modular and offsite projects as well as traditional, both residential and commercial.
  • High water vapour permeability to help avoid condensation risk.
  • UKCA & CE marked.
  • Protect FR tape available separately to seal laps for complete system solution.
  • Advanced glass fibre fabric composition with added tensile strength and durability.
  • Tested by external laboratory both free hanging and as part of a system in an end use application with Protect FrameSafe FR mechanically fixed over A1 & A2 substrates with a minimum density of 37.5kg/m3. All laps perimeter sealed with Protect FR tape.



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Glidevale Protect is a division of Building Product Design Ltd.

Other subsidiaries include ventilation systems specialist Passivent and Kingfisher Louvres, manufacturer of aluminium louvres systems.

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