Intumescent coatings are one of the most cost-effective solutions for protecting structural steel, providing fire resistance ratings of 30, 60, 90, and 120 minutes. These coatings are available in water-based formulations for internal use and solvent-based systems for external applications. Decorative topcoats in a range of RAL colours are available to meet architectural requirements. After application, dry film thickness (DFT) is measured to verify that the required fire protection performance has been achieved.