556AF has been developed to provide 30 or 60 minutes firestopping in voids of up to 600 mm between raised access floors and structural floors. The system has been tested by the Loss Prevention Council to BS EN 476-20. 556AF is foil faced both sides and is available in full slabs for cutting on site or factory cut to size.

To suit individual floor void depths of between 50–600 mm. Class 0 rated with excellent smoke resistance.

General information

Uniclass 2015

Pr_25_80_81_29 Flexible intumescent gap sealsPrimary


P12/160 Linear gap sealing

Product range


Specification data - Flexible intumescent gap seals

Product Reference


30 minutes fire resistance, 100 x 1200 x 900 mm.


60 minutes fire resistance, 120 x 1200 x 900 mm.

Standard product features


75 mm.

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