Many rainscreen and cladding systems are designed with an air cavity that acts like an open chimney to provide back ventilation and aid moisture dissipation.
However, in a fire situation this chimney effect creates an open path for the hidden spread of fire both vertically and horizontally behind the cladding system.
TENMAT's range of Ventilated Fire Barriers maintain the ventilated cavity in normal conditions, leaving a continuous free air space of up to 44mm, but, in the event of fire, the intumescent Ventilated Fire Barriers quickly expand to seal off the cavity to prevent fire spread.