Jotun – Top 10 SteelMaster FAQs

Read our top 10 most frequently asked questions about Jotun’s SteelMaster range and find out it is best fire protection option for your structure:

  1. What is SteelMaster?  
    SteelMaster is Jotun’s range of thin film intumescent coatings which can be used to protect structural steel against cellulosic fire for anywhere between 30 minutes and 180 minutes. SteelMaster is typically used in airports, shopping malls, factories, buildings and power plants. 

  2. What is thin film intumescent fire protection?  
    Thin film intumescent coatings provide reactive fire protection. The thin coating, covering structural steel, swells to insulate the metal, however this reactive method will only work in a fire situation and remain inert. Due to the changing physical form, fire protection is achieved by thermal insulation that provides a cooling effect. 

    This method is preferred for areas of buildings that require a decorative finish, or where the required fire protection time is normally below 2 hours. 

  3. Which materials can SteelMaster be used for fire protection?  
    Jotun’s SteelMaster range is primarily applied to the structural steel used in a building/structured frame. 
    SteelMaster can be also used over galvanised steel providing the substrate is suitably primed and that the appropriate fire rating can be achieved through this. 

  4. Which materials do not require fire protection from SteelMaster?  
    There are no proven benefits for SteelMaster products to be used to fire protect stainless steel, wooden surfaces, concrete, aluminium, plaster, blockwork or bricks. 

  5. Can SteelMaster be used to fire protect structural steelwork for the oil and gas industry?  
    In areas where a hydrocarbon fire may occur, SteelMaster is not suitable. However, another Jotun product such as an epoxy intumescent coating like Jotachar would work for this sector. 

  6. What are some of the key benefits of SteelMaster?  
    SteelMaster saves not only time in applying, but is also cost effective as you don’t need to buy as much product. The application process takes less time due to the quick thin film drying time and efficient and easy airless spray application method. 

  7. How long does the SteelMaster fire protection last?  
    SteelMaster does not need to be touched up or reapplied for ***  

  8. Is it recommended to have SteelMaster fire protection applied to all steel, including connecting steel sections i.e. bolt heads?  
    Yes. All steel featured in a structure is required to have the same level of fire protection throughout. Therefore, bolt heads and any joining beams should be suitably prepared and primed with the same SteelMaster-level protection. 

  9. Which primers and topcoats can be used with the SteelMaster range?  
    Only primers and topcoats approved by Jotun should be used to ensure the maximum capabilities of the fire protection is enforced. All approved primers and topcoats can be found at ***, after going through physical capability and fire test ratings. 

    Example of Jotun range ***  

  10. Can SteelMaster protection be applied on site to a structure?  
    Yes, this method provides many benefits for applicators: there is no touch up required from transport damage; there is a faster delivery and erection of steel from the procurement process is the fire protection is applied on site; and technical support is available when working with applicators to achieve the highest possible quality.  This being said however, most intumescent coatings products can be applied both on and off site depending on conditions.