Services

Intumescent Spraying and Painting for Structural Steel

Intumescent paint

offers vital fire protection for structural steel

When exposed to fire, the paint undergoes a chemical reaction that causes it to swell and form a thickened char layer. This insulates steel from fire damage, preventing underlying structural elements from reaching critical temperatures and helping to maintain the resilience and load-bearing capacity of beams and columns.

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How does intumescent paint work?

Intumescent paint contains compounds that react when exposed to heat. The coating melts into a foam and releases gases once temperatures rise above around 200°C. This foam then solidifies and expands into a carbonaceous layer (that can be up to 50 times the original thickness of the intumescent coating), preventing heat from weakening the structural steel. Once the fire has been extinguished, this layer is then cleaned away so that intumescent coatings can be reapplied.

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Intumescent paint being applied to structural steel

Experienced and accredited intumescent paint installers

When applied by accredited experts such as Sharpfibre and maintained over time, intumescent paint can provide decades of protection to multiple services, including steel, wood and concrete.

Our team of contractors are well-versed in various methods of intumescent paint application, using spray equipment, brushes or rollers to apply water-based, solvent-based and epoxy intumescent coatings. These coatings are compatible with multiple primers, minimising any additional load on steel structures while also adding decorative top coats to meet any aesthetic finish requirements.

We specialise in both onsite and offsite applications, so clients have the flexibility to tailor intumescent painting to meet individual project requirements, timescales and budgets. Both approaches are viable based on project needs, and our fully-accredited team will work diligently under strict conditions (e.g. controlled temperatures and unobstructed access) to ensure all intumescent coatings meet the highest possible standards of quality and compliance.

Some of our Recent Projects

Barking Riverside Station, London 01 04
Havenhuis, Port of Antwerp, Belgium 02 04
Westfield, London 03 04
Tesco, Woolwich Central, London 04 04

Barking Riverside Station, London

Transport for London

Havenhuis, Port of Antwerp, Belgium

Victor Buyck Steel Construction

Westfield, London

Westfield Shoppingtowns Limited

Tesco, Woolwich Central, London

Tesco PLC
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Sharpfibre’s involvement during the design development stage was invaluable in ensuring the buildings critical design performance requirements were fully satisfied and hence delivering the right solution to both the client and the construction team.

Paul Lynchehaun Project Director, Laing O’Rourke

Behind it’s striking new facade and in what has become a landmark development in Southend, Beaumont Court & Richmond House offers not only a superior style of apartment, but a brighter way of life in the heart of Southend on Sea

Randal Watts

It is phenomenal to see the progress that has been made on the rebuild since demolition was completed in March… What really impressed me was the level of communication and cooperation you have generated… What gave me confidence today was the quality of the build I saw – no evidence that build quality is being impaired by schedule yet…

David Wright Chief Engineer at National Grid

More Services

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Fire Door Installation and Maintenance

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Fire Damper Installation & Maintenance

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Cavity Barriers & Acoustic Seals

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Tunnel Lining

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Fire Risk Assessments & Strategies

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Trust us to be your steadfast partner in
securing compliance, safety, and peace of mind.

From initial planning to seamless post-installation support, Sharpfibre offers an all-encompassing solution that spans a wide range of products, effectively addressing the majority of passive fire-related concerns.

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