Passive Fire Protection On Timber


Pyrosafe WB

Pyrosafe WB is a water-based intumescent fire retardant coating for internal timber and wood derived building materials. In a fire the coating expands to form an insulating char layer which protects the substrate against combustion for a certain period. The char height of wood with a density 420 and 650 kg/m³ would be approximately 40mm after 60 minutes exposure to fire. The application of Pyrosafe WB reduced the char height by 25mm when exposed to fire. Pyrosafe WB is tested by the CSIR and provides a fire rating of up to 60 minutes.

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