Thermoguard Steel Fire Paint Primer MIO Solvent

UN1263 (Class: 3, Pk Grp: III)
Provides a permanently ideal surface on steel for intumescent paint adhesion within a Thermoguard paint system.
Available in 2.5 and 5 Litres in Dark Grey
From £42.84 £35.70
In stock
Only %1 left
Product Description

Thermoguard Steel Fire Paint Primer MIO Solvent is a high build primer that benefits from combined exceptional corrosion resistance, maximum grip to steel and previous primers. Provides a permanently ideal surface for intumescent paint adhesion.

Best Uses

Thermoguard Steel Fire Paint Primer MIO Solvent is ideal for use under  Thermoguard Thermocoat WI, Thermoguard Thermocoat WO or Thermoguard Thermocoat S intumescents, for corrosion resistance in normal buildings or as part of a high corrosion resistant system when overcoated with Thermoguard Flame Retardant Paints.

Formulated for structural steel frames requiring full or partial fire protection with Thermocoat intumescent paints. Provides a quick drying high build, corrosion-resistant primer for structural steel.

  • A primer finish for normal exposure conditions in 2 coats
  • A primer for severe exposure in 2 coats when overcoated with 2 coats Thermoguard Flame Retardant Gloss or Eggshell
  • Ideal initial coating below Thermocoat intumescent paint for internal, external under construction or indefinitely partially exposed structural steel
  • Attractive metallic finish available in Dark Grey
  • Zinc phosphate and Micaceous Iron Oxide for exceptional corrosion resistance and adhesion
  • Long-oil alkyd resin ideal to overcoat with Thermocoat intumescent after erection


Thermoguard Steel Fire Paint Primer MIO Solvent should be applied promptly to blast cleaned steel or steel hand-tool cleaned and abraded to ST2. Alternatively, this product should be applied to sound and firmly adhered primers, eggshell or gloss paints.

Apply promptly to blast cleaned or hand-tool cleaned steel before flash-rusting, or over well adhered primers and well adhered and abraded primer-finishes, gloss or eggshell paints. If applying via airless spray, this product is ready for use - apply using a 21 thou tip. For use with conventional low pressure spray – thin up to 10% with thinners as required. Brush or roller application on repairs and general structural steel straight from the tin.

Application Conditions: Min. 5°C, metal min 3°C above dew point, max 85% RH. Avoid getting wet for 24+ hrs.

Ideal for overcoating with itself, Thermoguard Thermocoat WI, Thermoguard Thermocoat WO or Thermoguard Thermocoat S intumescent paint or decorative gloss & eggshell.

Technical Details
Components: One Part
Type: Solvent Based
Finish: Metallic
Stock Colours: Dark Grey
Tintable: No
VOC Content: 2010 compliant as part of a specialist or performance coating system for structural steel
Volume Solids: 43%
Suitable Substrates: Steel
Application Method: Brush, Roller, Conventional H.V.L.P or Airless Spray
Theoretical Coverage: 5.7m2 per litre at 75 microns dry
Wet Film Thickness (WFT): 115 - 225 microns
Dry Film Thickness (DFT): 50 - 100 microns
Induction Time: -
Pot Life: -
Touch Dry: 1 hour at 20°C
Overcoatable: 6 hours at 20°C
Fully Cured:  
Cleaner / Thinner: Clean up with thinners (see container)
Shelf Life:  
Packaging: Available in 2.5 and 5 Litres

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