"Jotun Steelmaster 120SB is a solvent based intumescent coating that provides up to 120 minutes fire protection of structural steel exposed to cellulosic fire. It is a single pack, solvent based, acrylic thin film intumescent coating which can be used as mid coat or finish coat in atmospheric environments. Suitable on approved primers on carbon steel substrates.  Majority of steel sections covered Easy airless spray application Ready to use Tested to BS 476 (20 and 21)  VOC Level: 351g / Litre Touch Dry: 1 hour @ 10°C, 20 minutes @ 40°C Over-Coating: 16 hours @ 10°C, 6 hours @ 40°C Maintenance Cycle: 1 Year Thinning & Cleaning: Jotun Thinner No. 7 Number of Coats: 2 "Surface preparation: To secure lasting adhesion to the subsequent product all surfaces shall be clean, dry and free from any contamination. Coated surfaces: Clean, dry and undamaged compatible coating (ISO 12944-4 6.1) Typical use: Specially designed as passive fire protection for steel constructions. Suitable for structural steel exposed to external environments up to corrosivity category C4 (ISO 12944-2), with a compatible topcoat.  Application methods: Spray: Use airless spray. Brush: Recommended for stripe coating and small areas, care must be taken to achieve the specified dry film thickness.  "
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