Why Does Structural Steel Need Fire Protection?

Structural steel is widely used in commercial, industrial and public buildings because of its strength, durability and versatility. However, while steel is non-combustible, it can lose a significant amount of its strength and load-bearing capacity when exposed to the extreme temperatures generated by a fire.

This is why structural steel fire protection is an important consideration when designing and constructing buildings.

What happens to structural steel during a fire?

Steel does not burn like timber or other combustible materials, but that does not mean it is unaffected by fire.

As the temperature of structural steel increases, its strength and stiffness begin to reduce. If steelwork becomes sufficiently hot, it may no longer be able to safely support the loads it was designed to carry.

Without appropriate fire protection, this can potentially compromise the stability of the structure.

The purpose of fire protection is therefore to slow the rate at which the steel heats up, helping it retain its structural performance for the required period during a fire.

How does intumescent fire protection work?

One of the most widely used methods of protecting structural steel is an intumescent coating.

Intumescent coatings are specially formulated fire-protective paints that react when exposed to high temperatures. As the temperature rises, the coating expands and forms a thick, insulating char layer around the steel.

This protective layer acts as a barrier, reducing the rate at which heat reaches the steel and helping to maintain its structural integrity for the specified fire-resistance period.

Unlike some traditional fire protection systems, intumescent coatings can also provide a clean and relatively unobtrusive finish, making them suitable for a wide range of commercial and architectural applications.

Where is structural steel fire protection used?

Intumescent fire protection can be used across a variety of projects where structural steel requires protection, including:

• Commercial buildings and offices
• Industrial units and warehouses
• Schools and educational buildings
• Retail and hospitality spaces
• Sports and leisure facilities
• New construction projects
• Refurbishment and redevelopment projects

From new structural steelwork to existing buildings undergoing refurbishment, the appropriate fire protection system will depend on the individual project, steel section, required fire resistance and environmental conditions.

Why is professional application important?

The performance of an intumescent coating depends on more than simply applying paint to steel.

Correct surface preparation, coating specification, application and dry film thickness are all important parts of achieving the required level of protection. The surrounding environment and intended use of the building must also be considered when selecting the appropriate coating system.

Using an experienced specialist helps ensure that the specified system is applied correctly and that the project requirements are properly considered.

Protecting structural steel with Newlook Protective Coatings

At Newlook Protective Coatings, we provide professional intumescent fire protection for structural steelwork across commercial, industrial and construction projects.

Our team can work with contractors, developers and building owners to provide a professional coating solution for new and existing steelwork.

Whether you're working on a commercial development, industrial project, school, sports facility or refurbishment, our team can discuss your requirements and provide a tailored solution.

Looking for structural steel fire protection? Get in touch with Newlook Protective Coatings to discuss your project.