Smoke and fire-stopping

550 Series Firestop Systems have been developed to provide up to four hours firestopping at the junctions of compartment walls and floors. The systems have been tested in accordance with BS EN 476-20.

553 Firestop Strip is a no compression, tight fitting (extended width) strip for rectangular voids. It is used in cases where the fire resistance of a deck horizontally is less than the fire resistance of the wall itself.

• Maximum void size to be filled: 50% of wall width.

• Available for voids of between 10–100 mm.

556 Firestop Slab has been developed to provide two hours firestopping in building cavities up to 300 mm wide. The system has been tested by Warrington Fire Research to BS EN 476-20.

It is manufactured using 75 mm thick high density rock fibre slab foil faced on both sides. Firestop Slab has rebated ends for a secure fit and is available in full slabs 1160 x 900 mm, or factory cut to size.

It can provide two hours fire resistance in masonry cavity voids and between the edge of a concrete floor slab and curtain walling systems.

Suitable for cavities 50–300 mm wide.

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.

550 Series Firestop Systems have been developed to provide up to four hours firestopping at the junctions of compartment walls and floors. The systems have been tested in accordance with BS EN 476-20.

558 Firestop Block is a trapezoidal block for infilling nominated profiled steel deck constructions such as Ribdeck 60, Alphalok etc. It is cut to the exact profile of the steel deck to allow for a tight, no compression fit.