FFB-VS a foil-faced stone wool pre-cut unit, which has a powerful intumescent graphite strip bonded to the exposed face. The intumescent graphite strip is pre-wrapped with a durable polythene adhesive sheet to prevent water ingress. It has been designed to provide a 25 and 50 mm ventilation gap, that allows air flow and moisture to pass down the back of the cladding. Under fire conditions, the powerful intumescent along the front edge expands horizontally to close the gap and prevent the passage of fire.
Tested up to 120 minutes integrity and 90 minutes insulation utilising the heating and pressure conditions of EN 1363-1: 2012 and ASFP TDG19: 2014 - Open State Cavity Barriers.
Suitable to close 25 & 50 mm ventilation gap
Voids up to 450 mm wide
Free of halogens, asbestos, fibres and silica and is non-toxic
Long life expectancy
Contributes to green building