SC604 Intumescent Steel Coating - Off-Site, Solvent Based

Intumescent Steel Coating - Off-Site, Solvent Based

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SC604 is a borate free, high solids, low VOC single pack acrylic thin film intumescent for the protection against fire of internal and semi exposed structural steelwork, optimised to provide 60 minutes fire resistance.

Fire Rating: 60 Minutes


SC604 is optimised to provide 60 minutes fire resistance to ‘I’ section beams and columns, hollow columns and beams, as well as cellular beams, concrete filled hollows and solid steel tension rods. Limited 90 minute protection is also available. SC604 can be used on steel, cast iron and galvanised steel. On-site, standard dry version, SC605, is also available.

Detailed application instructions are available for SC600, SC800 and SC900 series that must be consulted prior to commencing application. Please visit

USE IN WELL VENTILATED CONDITIONS and ensure all recommended protective equipment is worn during handling & use of this product. For full recommendation, refer to safety data sheet. Safety data sheet must be read and understood before use. Flammable - keep away from open flames and other ignition sources.

  • Competitive loadings.
  • Compatible with various primers and Topcoats.
  • Easy to apply.
  • On-site grade, SC605, also available.
  • Optifire®+ unique traceability identifier.
  • CE ETA 21/0683.
Nullifire Application Instructions SC600 Series (en-GB).pdf Application Instructions
SC604-5 EN13381-6 Loading Table.pdf Loading Tables
SC604_5 EN13381-10 Loading Table (en-GB).pdf Loading Tables
SC604 Declaration of Performance (en-GB).pdf Declaration of Performance
SC604 Safety Data Sheet (en-GB).pdf Safety Data Sheets
SC604 Technical Data Sheet (en-GB).pdf TDS
Nullifire Intumescent Coatings Brochure (en-GB).pdf Brochure