Description WBS Flexible Sponge Cavity Barriers An intumescent impregnated sponge barrier with fire and smoke stopping capabilities. Available in a ventilated form fitted with a rubberised intumescent strip which expands in a fire to fill the ventilation holes. The WBS cavity barrier is a flexible, fireproof sponge that is fixed in a horizontal or vertical position, in either a brick or block cavity. Its’ unique self springing properties allow the WBS to be fixed into the cavity by simple pressing the seal into place. The benefits are: Fire Proof Sponge (WBS) – Ensure optimum durability and moisture protection as well as offering continued thermal insulation within the cavity section. Powerful Intumescent Seal (VWBS) – In the event of a fire, the intumescent seal expands, filling the ventilation and moisture holes. Therefore, stopping the spread of fire and smoke. Additionally the rubberised intumescent stops moisture impregnation. Advantages – All barriers in the range are designed to fix across the gap between the inner and outer course of brick to block or block to block walls– The WB foiled cavity barrier range is designed to be fitted horizontally between brick or block walls, expanding to form a complete fire and smoke barrier in a fire– Foiled cavity barriers are designed to allow insulation material to be installed both above and below the barrier– VWBG barrier is self-draining – ideal for allowing free air flow in and out of cavities where smoke sealing is required– The WBS flexible sponge barriers can be fitted horizontally or vertically between brick or block walls, resisting fire and smoke. The ventilated version, which must be fitted horizontally, is also fitted with an intumescent strip which expands to fill ventilation holes in a fire. – Sponge cavity barriers provide their own thermal insulation, but also allow for insulation material to be installed above and below the barrier Application Instructions BRICK AND BLOCK CAVITIESThe barrier is held into the horizontal position by sandwiching it between the bricks and mortar at thebuild stage. For vertical fix using clout nails. BRICK / WOODEN CAVITIESThe barrier is tucked into the brick mortar during build stage, It is then held and fixed to the wooden partition by being pushed into position , because the barrier is flexible it has spring tension and will hold its self in position. CONCRETE TO STEELWORK & STEELWORK TO STEEL FRAMEThe cavity barrier can be attached to the concrete/steel by means of a metal fixing strap FB/c1 1250mm long or FB/c2 2500mm long available from ENVIROGRAF with appropriate fixings The cavity barrier can be formed to the desired profile / shape so that when the cladding is fitted there is sufficient pressure to arch the barrier and form a fire break. General Fixing NotesFix the metal straps with suitable steel fixings or hilti gun.If the cavity barrier needs to be cut foil tape should be applied to the cut area.Foil tape can be purchased separately quoting product code ST50 Order References / Sizes WBS Cavity Barriers Vertical & Horizontal Non-ventilated 1 metre length & 2 metre lengthWBS80 WBS135 WBS165 WBS210 WB265 Ventilated 1 metre length & 2 metre lengthVWBS80 VWBS135 VWBS165 VWBS210 VWBS265 WBS Cavity Barriers Ventilated fireproof sponge for cavitiesCavity width allow when ordering 10mm wider for compress... Data Sheets TECHINCAL DATA TD055-WB-VWB-10-2018.pdfTD055-WBS-10-2018.pdf APPLICATION DATA AP055-10-2018.pdf COSHH DATA HS055-WB-VWB-RSWB-RSVWB-10-2018.pdfHS055-WBS-VWBS-10-2018.pdf
