Explore our brands

Why Steel Protection is Important

For decades Nullifire has been one of the leading innovators of steel protection and intumescent coatings.

Intumescent coatings protect steel from reaching structural failure temperatures and with steel protection from Nullifier steel will maintain structural stability for up to 120 minutes, giving the emergency services time to evacuate people from the structure and stop the fire.

With products approved to a range of local and international standards, Nullifire systems have the ability to match a number of requirements. Nullifire offers patented hybrid technology systems, waterbased and solvent based systems that are suitable for different environments and applications.

Do you want to know more about steel protection? Please read on…

Why Do We Need Fire Protection for Structural Steel?

Why Do We Need Fire Protection for Structural Steel?

If it’s not there, there is a big risk that the building will collapse in a fire.

Steel will not burn, but if it gets exposed to heat, it loses its strength very quickly.  Loss of strength of steel begins at about 300ºC and increases rapidly after 400ºC. Failure temperature of the steel core is about 550°C, depending on the orientation and type of structure. When steel looses its’ strength building can and most likely, will collapse.

In a cellulosic fire for example, when it is fueled by wood, paper and/or plastics, an average piece of unprotected steel hits 550 °C in as little as 15 minutes.

Nullifire offers Intumescent Coatings that protects the steel from reaching structural failure temperatures in fire. Protected steel will maintain structural stability for times up to 120 minutes, which gives the emergency services time to evacuate people and stop the fire.

Nullifire Offers Different Systems, Why?

Nullifire Offers Different Systems, Why?

Nullifire offers 3 different types of systems; Waterbased, Solvent Based, and Hybrid. Take a look at the table below to understand the differences between the systems:

WaterbasedSolvent BasedHybrid
 
  • Internal or limited term exposure
  • On-site
  • Little or no VOC
  • No solvent odours, or safety concerns
 
 
  • External
  • On and off-site
  • Higher durability (compared to waterbased)
  • Climatic tolerance for drying
 
 
  • External
  • On and off-site
  • Low VOC
  • 1hr dry to weather resistance
  • One coat
  • Flexible
  • Improved damanged resistance
  • Low odour
 

Please consult our technical service for choosing the right system for your project.

How Do Intumescent Coatings Work?

How Do Intumescent Coatings Work?

When the coating is exposed to temperatures of ~200°C, the coating starts to react and rapidly swell, or intumesce, providing an insulating char much greater in thickness than the original coating. This thermally insulating char barrier reduces the rate of heat conducted to the metallic element.

How Thick Do Intumescent Coatings Need to be Applied?

How Thick Do Intumescent Coatings Need to be Applied?

Film thickness of the coatings, depending on the product and the project vary from 0.2 to 4 mm typically. Coatings can be applied using conventional spray equipment or by brush.


Find Out More

Nullifire offers a range of fire protection systems suitable for varying environments. Intumescent Coatings, Basecoats, Solvent-Based Intumescent Coatings, Rapid-Cure Systems,Primers, and Top Seals are all on offer throughout the Nullifire product range. Explore Nullifire products and more via the icons below: