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Passive fire protection
Steel loses strength as it heats. Intumescent coatings expand in a fire to insulate structural steel, keeping it below its failure temperature and buying the minutes that matter for evacuation.
Intumescent coatings — such as the Nullifire range — are applied to structural steel as a thin film. In normal use they look like ordinary paint, but in a fire they swell into a thick insulating char that shields the steel from the heat around it.
Why it matters: unprotected steel weakens rapidly as its temperature climbs and can fail before a building is clear. By holding the steel below its critical failure temperature, passive fire protection maintains structural integrity and buys the critical time needed for safe evacuation.
Intumescent coatings
Nullifire intumescent systems applied to the required film thickness for the section and rating.
Primers & topseals
Compatible primers and decorative topseals that complete and protect the intumescent system.
Specification to fire ratings
Scheme and film-thickness specification matched to the required fire-resistance rating.
Need a fire-rated steel scheme?
Tell us the sections and the required rating — we'll specify the intumescent system to suit.