Open State Cavity Barrier

Open State Cavity Barrier


This Open State Cavity Barrier isĀ  designed for installation within cavities where ventilation is required.

Manufactured from non-combustible rockfibre mineral wool with a reactive intumescent layer, the cavity barrier can provide an air gap of up to either 25mm or 44mm.

The intumescent layer will rapidly expand when exposed to heat in a fire event, closing off the air gap preventing vertical fire spread within the external wall cavity.

Suitable for installation horizontally, The ARC open state cavity barriers should be partnered with ARC Fire Stop Slab installed vertically for a complete cavity barrier solution.

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