Curtain Wall Barrier

Fire product

ARC Curtain Wall Barrier

  • Up to three hours fire integrity
  • Foil faced to provide a smoke barrier
  • Cut to size on site or factory finished
  • Available to suit cavity widths up to 300mm


ARC Curtain Wall Barrier provides up to three hours fire integrity at within the cavity of an external wall at separating floor levels, where curtain wall cladding has been used on the outside of the building. Manufactured from rockfibre mineral wool insulation with a class ‘O’ reinforced aluminium foil facing to both sides offering excellent resistance to smoke.

Key stats

Insulation Rockfibre mineral wool
Thermal conductivity 0.035W/mK
Fire integrity Up to 3 hours

Frequently asked questions about this product

What should I use to fix the brackets to the substrate?

The fixing brackets should be mechanically fixed in to the edge of the concrete floor slab or in to blockwork. A minimum 50mm masonry screw should be used.

Does ARC Fire Stop Slab need a compression fit?

No, ARC Curtain Wall Barrier only requires a friction fit. It is important to make sure there are no gaps, and therefore factory cut sizes are supplied 5mm over-size.

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