The decision on whether to encase steel sections, or leave them exposed for architectural purposes is one which often comes down to the preferred aestehtic look of the building. Where the design calls for the steel to be exposed the use of Hybrid intumescents – such as Nullifire SC902 – is generally recommended due to the excellent fire performance it acheives and the ability it offers for top-coating.
Where a hybrid intumescent is chosen as the preferred option there are multiple components which are involved:
Steel Preparation (which can include galvanising or blasting)
Intumescent as basecoat
Top seal / finishing coat
If you would like more information on the use of thin-film intumescents or require advice on specifying intumescent, please contact our team.
Permax only source and supply products from the best manufacturers from around the world – those whose products meet the most stringent of criteria.The Permax team are highly qualified to help you with any question you may have. We can develop specifications, provide technical advisory notes and offer advice on design details to suit your project.We are Permax: a team of knowledgeable and experienced professionals who work with our clients to determine the right specifications for their project, determine ways to optimise the quantities required and ensure you are supported throughout the engineering and application process.Whether you are looking to learn more about the Nullifire range of products, source materials or a local certified installer, or are looking for technical assistance, Permax are here to help you.At Permax we are happy to offer our assistance and advice for your structural steel fire protection requirements. Our industry expertise has led us to compile a collection of the questions we are most frequently asked. One of our popular brand of structural steel fire protection is Nullifire.Nullifire is a brand recognized as a global leader in passive fire protection systems, and has become synonymous with some of the best structural steel fire protection coatings technologies available today. Formulated and manufactured to the highest standards, the Nullifire thin film intumescent coatings – specifically the SC900 series - offer application and performance advantages which have made it the first choice of builders, engineers, architects and specifiers in many countries world wide.Combating The Effects Of Fire - With NullifireFires are generally classified as either Cellulosic or Hydrocarbon fires. The essential difference between them relates to how quickly each reaches its maximum temperature range and the combustible fuel source feeding the fire.Cellulosic fires are those that are fuelled by materials such as timber, furniture, paper, plastics and other common items as found in buildings such as offices, hospitals, shopping centres and residential buildings.In such a fire, temperatures quickly reach around 550 degrees Celsius which over the course of the fire will have a dramatic effect on the structural steel within the building. Whilst it will not burn, it will warp and lose its ability to support a load, increasing the likelihood of building collapse.Under the NCC all buildings with exposed structural steel are required to implement protective measures around the steel.The Nullifire range of intumescent coatings are designed to protect structural steel in the case of cellulosic fire. Often called fire retardants, or mistakenly called "fireproof" paints, intumescent coatings refer to that class of specially formulated coatings which swell and form a protective "char" as a result of extreme heat exposure.Nullifire intumescent basecoats are formulated specifically to fire protect structural steel up to a fire rating level of 120 minutes.