Hero Fireproof® FR Board consists of a high density stone wool core, over-coated with Hero Fireproof® FR Coating. The top coating provides additional protection by significantly reducing the permeability of the stone wool core and prevents the passage of hot gases, thus reducing the temperature rise on the unexposed side and reducing heat conduction through the building services.
Hero Fireproof® FR Board is available with top coating on one or two sides, selected on the basis of installation considerations and fire resistance. On site, Hero Fireproof® FR Board must be used together with Hero Fireproof® FR Acrylic for sealing around building services and the surrounding construction.