Thermoguard Steel Fire Paint Primer
£39.30 (inc. VAT)
£32.75 (ex. VAT)
- UK manufactured, trusted brands
Thermoguard Steel Fire Paint Primer is a fast-drying, high-build solvent-based primer for structural steel, offering exceptional corrosion resistance and superior grip to steel, existing primers and gloss finishes. It forms the perfect base layer for Thermocoat WI, WO and S intumescent systems.
Formulated with Zinc Phosphate and Micaceous Iron Oxide, it delivers a tough, attractive metallic finish and is ideal for both internal and partially exposed external steel. Can also be used as a standalone primer finish in two coats under normal exposure or as part of a severe exposure system when overcoated with Thermoguard Flame Retardant Topcoat.
Surface Preparation
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Apply promptly to blast cleaned steel or steel abraded to ST2
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May also be applied to sound primers, gloss or eggshell finishes
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Ensure all surfaces are clean, dry and sound
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Avoid flash-rusting before application
Tech Data
| Property | Detail |
|---|---|
| Finish | Metallic (Mid Grey / Gunmetal) |
| VOC Content | 2010 Compliant |
| Composition | Zinc Phosphate + MIO |
| Resin Type | Long-oil alkyd |
| Solids (Vol/Weight) | 43% / 62% |
| Pack Sizes | Refer to availability |
| Application Methods | Airless Spray, Brush, Roller |
| Coverage | 5.7 m²/L @ 75 microns dry |
| Max WFT (2 Coats) | 175 microns |
| DFT Target | 50–100 microns (typical 75) |
Directions for Use
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Minimum application temp: 5°C, steel must be 3°C above dew point, RH below 85%
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Avoid exposure to moisture for at least 24 hours
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Airless spray (21 thou tip): ready to use
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Conventional spray: thin up to 10% with suitable thinners
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Brush/roller: use as supplied for small areas or touch-ups
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Overcoating times:
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Touch dry: 1 hour @ 20°C
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Recoat: 6 hours @ 20°C (longer at lower temps)
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Data Sheets
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