Ventilated Fire Barrier

Modern constructions often require external cladding and rain screens to be held away from the building structure to allow ventilation and improve the building energy efficiency. This resulting cavity creates a serious fire protection threat to structures and people. The void acts like an open chimney and allows the fire to spread quickly both vertically and horizontally around the building.

The FF102/50Plus Intumescent Fire Block is a ‘Open State’ Cavity Fireblocking system for ventilated cavities of up to 19.6″ (500mm) which employs Tenmat’s high expansion FF102/50 intumescent material fixed to a high density mineral wool backing. FF102/50 has undergone extensive fire testing, including NFPA285 at Intertek and UL and is suitable for use within a wide range of construction types, enabling the versatile system to be specified with confidence and provide the installer with a simple, time saving and site friendly solution.

FF102/50 intumescent fire blocks are a NYC OTCR/DOB approved material in accordance with the 2022 NYC Building Code Section 718.2.1 (item #8) when required in concealed spaces of exterior wall coverings as specified in accordance with BC 718.2.6.1.

The FF102/50Plus can be mechanically fixed both horizontally and vertically within concealed spaces behind rainscreen or cladding systems. The open space between the Tenmat material and cladding allows for airflow and moisture dissipation but will expand quickly in case of a fire to block off the cavity and prevent the fire to spread.

The FF102/50Plus is a particularly versatile intumescent fire block which can be installed in a wide range of construction types. The product is simply mechanically fixed in position to leave up to a maximum 1 3/4″ (44mm)* air gap.