Passive Fire Protection

Passive Fire Protection

Raised Access Floor Barriers

Safire® Raised Access Floor Barriers are purpose manufactured from rock fibre material to seal the void between a raised access floor and the floor slab, thus preventing the spread of fire and smoke within concealed floor spaces and at junctions between floor and walls.

  • Rated for up to 6 hours
  • Seals voids up to 600mm high
  • Easily fully enclosed for sensitive environments
  • Integral smoke barrier
  • Tested to BS476 Part 20


Access Floor Barriers are compression fitted into the void and the thickness of the access floor barrier should be 5% to 10% higher than the measured height of the void.

For voids over 150mm high, securing clips are provided for extra support. The direction of these are staggered such that each length of access floor barrier is supported.


Access floor Barriers are supplied in lengths of 1200mm to the correct height as specified by the site. Barriers are butt jointed to form a tight seal between adjoining lengths.

Installation is continued in this way with barriers at 10m or 20m as required by Building Regulations.

Temporary pinning or taping together of sections may be carried out if desired to avoid accidental disturbance before the installation of the access floor.

For barriers over 200mm high, special securing clips are provided for extra support. the direction of these alternates such that each length of access floor barrier is supported on both sides. Clips are supplied pre-cut to penetrate approx. 75% of the barrier thickness and should be fitted at 300m centres, or 200mm centres if the barrier is over 450mm high.

The barriers can be mechanically fixed to the structural floor as required.


Safire® Raised Access Floor Barriers are available from a national distributor network, enabling fast delivery to site directly from stock.

When ordering, please include the following information:

  • The height of the void
  • Required fire rating
  • The number of lengths required


Safire® Raised Access Floor Barriers exceed the requirements of the Approved Document B3 to the Building Regulations 1991 for England & Wales, the Building Standards (Scotland) Regulations 1990 Part D.2.19 and the Building Regulations Northern Ireland 1990 Section E4

  • 1200mm Lengths
  • Butt Jointed
  • Barriers every 10m or 20m according to Building Regs.
  • Securing Clips provided for barriers over 200mm high

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