Siderise cavity barriers prove capabilities in brick slip system test

BS 8414-2 Fire Performance of External Cladding Systems 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 blaze.

The testing procedure was conducted independently by international consultant Thomas Bell-Wright and comprised a 28 mm Ash & Lacy’s MechSlip brick cladding system combined with stonewool insulation slabs. Siderise’s RH25 and RH50 cavity barriers were used horizontally and vertically with associated galvanised steel brackets. The system itself was fixed to a steel framing solution. The test result only applies to this configuration.

Siderise’s RH cavity barriers are a partial-fill product made from a compressed stonewool lamella core and incorporate a continuous bonded intumescent strip along the leading edge. This allows for the free ventilation and drainage necessary for a ventilated façade.

When exposed to the heat of a fire, the intumescent strip will rapidly expand to fully seal the gap and protect the façade system from fire spread.

As a business, Siderise is wholly committed to third party testing for all of its products. The company is a strong advocate of large-scale fire tests, which are invaluable when it comes to understanding how a whole façade system – including its cavity barriers and firestops – performs in a realistic application.

*Further information on passive fire protection and testing procedures is available online at www.siderise.com