by AIM
Raised Access Floor Barrier
For voids beneath raised access floors.
PRODUCT
AIM Raised Access Floor Barrier prevents the passage of flame and smoke through the under floor cavity, for at least the period of fire rating specified. AIM Raised Access Floor Barrier is made from high density Rockwool stone wool slab, faced with impervious foil facing on both sides. It is available cut to size or in slabs suitable for cutting on site. When used in conjunction with Rockwool Ablative Coated Batts underfloor services can be easily accommodated.
APPLICATIONS
Raised Access Floor Barriers are required for four applications (requirements for fire barriers):
1 - Subdivision of large uninterrupted cavities
To comply with Building Regulations - 30 minutes’ integrity plus 15 minutes insulation. The AIM Raised Access Floor Fire Barrier meets and exceeds the requirements of Approved Document Part B (in England and Wales) as well as the fire safety sections of other UK Building Regulations’.
2 - Alignment under a partition, to maintain partition rating
i) 30 minute partition - 30 minutes’ integrity plus 30 minutes’ insulation.
ii) 60 minute partition - 60 minutes’ integrity plus 60 minutes’ insulation.
iii) 120 minute partition - 120 minutes’ integrity plus 120 minutes’ insulation.
3 - Reduce flanking transmission of sound
The AIM Raised Access Floor Barrier can be used to reduce flanking transmission of sound through the void it fills by at least 21 dB RW and typically provides 51 dB when installed with a Tate Global Floor System
4 - Plenum Applications
The AIM Raised Access Floor Barrier can also be used to help create a Plenum chamber under a raised access floor system.
5 - Service Penetrations
When used in conjunction with Rockwool Ablative Coated Batts, services such as cable trays and pipes can be accommodated. The system allows for the barrier to be fitted around existing services or they can be retrospectively added.
For more information visit the AIM website here.
Read more1 Revision
30/09/2026

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Bimstore on 01 October 2026
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