Jotun Steelmaster 900WF. 120 Mins Fire Protection for Steel

Steelmaster 900WF is formulated to provide up to 120 minutes Fire Protection on Structural Steel, it has lower applied costs than most Intumescent Paints.

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Jotun Steelmaster 900WF. 120 Mins Fire Protection for Steel

Steelmaster 900WF is formulated to provide up to 120 minutes fire protection on structural steel, it has lower applied costs than most intumescents, achieving 120 minutes fire rating at lower film thicknesses..
A low odour finish with high coverage rates and lower paint requirements compared to other intumescents. It is a single pack high solids waterborne thin film intumescent suitable for structural steel, beams and columns exposed to cellulosic fire. Ideal for the protection of steel buildings for 30 minutes, 60 minutes, 90 minutes and 120 minutes fire protection. Designed for high performance and minimum environmental impact. Steelmaster contributes to Green Building Standard credits approved by LEED and BREEAM. EPD Verified. Steelmaster 900WF is quality guaranteed by Exova Warrington Fire Research meeting the requirements of BS476 part 20/21 Certifire CF 6140, Cellular beams RT1356, ASTM E84 Class A and EN 13381-9. It is suitable as a finish coat internally or externally up to corrosivity category C3 (ISO 12944-2).

  • Upto 120 Minutes Fire Protection on Structural Steel. High Solids Intumescent Paint. Meets the requirements of BS476 part 20/21, ASTM E84 Class A.
  • Steelmaster 900WF Higher Fire Rating at Lower Film Thickness. Lower Applied Costs. Guaranteed by Exova Warrington Fire Research. Free Estimation and Specification Service.
  • Waterbased Intumescent Paint. LEED & BREEAM Certified. Low VOCs. EPD Verified. Contributes to Green Building Standards. Free UK Next Day Delivery.

Environmental Credentials

Waterbased Intumescent Paint.

Low VOCs 29g/lt.

White Swan Label.

LEED & BREEAM Certified.

EPD Verified.

Green Building Credits.

HAPS free.

Technical Data

Exova Fire Tested up to 120 mins.

BS476 part 20/21: Certifire CF 6140.

Cellular beams RT 1356.

ASTM E84 Class A.

High Build upto 730 microns per coat.

High Volume Solids 73%.

Surface Preparation

Surface preparation and coating should normally be commenced only after all welding, removal of sharp edges and treatment of welds is complete. Most primers will require the steel to be abrasive blast cleaned prior to application. Jotun Pilot QD zinc phosphate primer has been fire tested and recommended for most internal steelwork. For more corrosive environments Penguard Express ZP is the recommended primer. Ensure the primed surface is free from oil grease and other contaminants prior to application of Steelmaster. Should a final colour topcoat be required Jotun Pilot WF SM, Conseal TU and Hardtop HB are recommended. Both available in a range of RAL and British Standard Colours. For more technical information on Steelmaster 900WF download the technical data sheet.

Jotun Steelmaster 900WF is a single pack, high solids, waterborne thin film intumescent coating independently approved to provide upto 120 minutes fire protection to structural steel.

This product has been quality guaranteed by Exova Warrington Fire Research with high coverage rates and significantly lower product usage than other intumescent coatings.

It can be used as a mid coat or finish coat in atmospheric environments, for carbon steel substrates it should be applied over approved primers such as Pilot QD or Penguard Express.

Steelmaster 900WF contributes to the Green Buildings Standard Credits, iIt meets the requirements of BS476 part 20/21 Certifire CF 6140, ASTM E84 Class A and EN 13381-8.

Steelmaster 900WF may be overcoated with approved topcoats such as Conseal TU ,  Hardtop HB or Pilot WF SM.

A free estimation service is available to calculate loading requirements to achieve the required fire protection. E mail the drawings with steel section dimensions to Avace for confirmation of the theoretical coverage rates. Include appropriate loss factors, such as overspray and spillage when calculating your actual requirements. Simply contact us for your free estimate.


We are committed to the environment using only natural raw materials. Awarded  the White Swan Certificate, representing rigorous achievement across five critical categories: material health, material recycling, renewable energy and carbon management, water stewardship and social fairness, requiring continual improvement. Products with a whole green life cycle complying with Reuse, Reduce and Recycle philosophy, guaranteeing the most efficient use of materials.