Siderise is a cavity barrier system specifically developed to meet the requirements to be used with drained and ventilated cladding. Use ensures that the system will drain any moisture within the facade construction, by maintaining airflow. In the event of fire, provide an effective hot smoke and fire seal. 

Siderise cavity barriers consist of a non-combustible stonewool lamella core, with reinforced aluminium foil faces. This primary seal has a reaction to fire performance to Class 'Al'. The exposed leading edge is also sealed with aluminium foil. Whilst the base material is water repellent and non-hygroscopic, this predominantly enclosed arrangement affords an added degree of weather protection to the core material.

Siderise 'Open State' cavity barriers incorporate a continuous high-performance reactive intumescent strip which is bonded to the leading edge. The intumescent material has a reaction to fire performance to Class 'E'. In the event of exposure to fire, the intumescent rapidly expands and fully seals the purposely designed ventilation gap, formed at the time of installation, between the barrier and the rear of the cladding.