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Durasteel Fire Protection Systems

Invicta Fire Protection is a specialist division of The Invicta Group, the world's leading installer of 4 hour passive fire protection systems using Promat Durasteel, and now operates in 3 territories covering Europe, the Middle East and North America.

Durasteel is a unique, high performance composite fire panel installed under license as fire barriers, blast walls, transformer barriers, fireproof ceilings, service protection and fireproof media storage vaults for the premier protection of employees, the general public, working areas and operational elements. Our fire protection systems provide not only four-hour fire protection, but are also highly blast, impact and moisture resistant, and possess extreme durability with a design life of 40 years, meeting both A60 standard and H120 hydrocarbon fire test marine classifications.

The systems can also be designed to be load bearing and are strong enough to be walked on if fire resistant floors are a requirement.

Each system is tested up to 240-minute fire resistance and complies with many internationally recognised approvals including Warrington Certifire, Underwriters Laboratories (UL and ULC), Dubai Civil Defence and Lloyds Register.

Our Durasteel division provides the following services:

  • Advice on space saving-designs
  • Free estimates
  • Innovative solutions to on site difficulties
  • System costs and installation
  • Experience and technical support
  • Proven and tested designs

What Is Durasteel?

what is durasteel

Durasteel is a four-hour fire and blast resistant composite panel of fibre reinforced cement mechanically bonded to punched steel sheets on both outer surfaces.

It is classed as 'non-combustible' to BS 476:Part 4:1970 and to Clause 10 of EN 13501-1:2002, and has been tested to comply with many recognised UK and international fire standards.

Durasteel has been developed and supported through rigorous testing for use in barriers, doors and ceiling applications, with a wide range of specifications available.

Durasteel systems combine lightness, strength, impact, blast resistance and durability with exceptional fire resistance. These systems remain unaffected by firefighters' hoses, leaving them capable of performing their original function even during a fire.

Durasteel has been installed extensively around the world across a wide range of industries, including power stations, nuclear, petrochemical, pharmaceutical, off-shore platforms, warehouses, airports, rail and metro facilities.

Durasteel Features

durasteel features
  • Four Hour Fire Resistant (240 minute) - integrity and insulation
  • Blast Resistant - tested to 2 bar (200kN/m² overpressure)
  • Hydrocarbon Fire Resistant - Tested to H120 Hydrocarbon fire rating
  • Impact Resistant
  • Moisture and Hose Stream Resistant
  • Vibration Resistant
  • Lightweight - No foundations required
  • Space-Saving - Excellent structural strength and integrity
  • Completely Modular, Demountable and Remountable
  • Maintenance Free
  • Suitable for Internal and External Locations
  • Can be Prefabricated Offsite
  • Purpose Built to meet Individual Requirements
  • Complies to UK and International Fire Standards
  • 40 Year Design Life



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Fire safety law changed in October 2006. The new law emphasises prevention of fires and reduction of risk, and makes it the property owner's responsibility to ensure the safety of everyone who uses their premises and the immediate vicinity.

The Department for Communities and Local Government (DCLG) have produced a set of guides to advise the responsible person how to comply to the fire safety law, help them to carry out a fire risk assessment and identify general fire precautions that will need to be put in place.

Failure to meet the requirements of these new regulations could lead to prosecution, which could then result in hefty fines or even conviction. The Order replaces any previous fire legislation. Any fire certificates issued under the Fire Precautions Act 1971 have ceased to have effect from 1st October 2006.

Invicta provides a free advice service to help parties within the building industry to make the right choices in fire safety.

Invicta's technical department are constantly searching for solutions, and are experts in fire safety legislation. They monitor any changes and test practical solutions.

Durasteel Passive Fire Protection Systems

  • Fireproof Media Storage Vaults
  • Fire Barriers and Firewalls
  • Transformer barriers
  • Blast barriers
  • Pallet Racking Warehouse Barriers and Walls (In-rack separation)
  • Four-hour Fire Doors
  • Fire rated ceilings
  • Fire Rated Enclosures/staircases
  • Wings at the interface of fire barrier and roof lining
  • Plant room access panels
  • Conveyor enclosures
  • Conveyor drop shutters
  • Tunnel cross barriers
  • Service splitters
  • Equipment enclosures
  • Escape enclosures
  • Valve enclosures
  • Fire rated trunking
  • Plant room walls and doors
  • Escape tunnels and shafts