Siderise RH Cavity Barriers have proven their passive fire protection capabilities as part of a ventilated facade system again — this time as part of a brick slip façade system which successfully met the requirements of BR 135 when tested to BS 8414-2.
BS 8414-2 is a 60-minute large scale system test that mimics a fire breaking out of a window and exposing a cladding system to a severe fire.
The test was conducted independently by international consultants Thomas Bell-Wright and comprised a 28mm Ash & Lacy’s MechSlip Brick Cladding System, combined with stonewool insulation slabs, and Siderise RH25 and RH50 cavity barriers used horizontally and vertically with associated galvanised steel brackets.
The system was fixed to a steel framing system and the result only applies to this configuration.
Siderise RH Cavity Barriers are a partial-fill product made from a compressed stonewool lamella core, incorporating a continuous bonded intumescent strip along the leading edge.
This allows for the free ventilation and drainage necessary for a ventilated facade; however, when exposed to the heat of a fire, the intumescent strip will rapidly expand to fully seal the gap and protect the facade system from fire spread.
Siderise is committed to third-party testing all its products. It is a strong advocate of large-scale fire tests, which are invaluable to understanding how a whole facade system – including its cavity barriers and firestops – performs in a realistic application.
For more information on passive fire protection and testing, visit www.siderise.com
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