ARC Cavity Stop Socks are designed to restrict the spread of smoke and flames in external masonry and timber frame walls. They minimise the effect of flanking noise pollution at wall junctions too.
ARC Cavity Stop Socks are produced from low resin, non-combustible rockfibre mineral wool and are sleeved in polythene for on-site weather protection.
ARC Cavity Stop Socks are tested at Warrington Fire Research and Chiltern international Fire, achieving up to 4 hours fire integrity with traditional masonry construction and up to 1 hour in a timber frame construction.
ARC Cavity Stop Socks are designed to be compression fitted withind the cavity wall and are easily installed both vertically and horizontally during construction. Care should be taken to ensure butt joints are tightly fitted to maintain fire integrity. The cavity barrier must fully fill the cavity from the inner to outer leaf and any cavity insulation must be cut back. ARC Cavity Stop Socks can be manufactured to suit cavity widths up to 300mm
