Intumescent Coatings
Fire safety is paramount in every structure, from commercial buildings and public spaces to heavy industrial facilities. At Ultimate Coatings Limited (UCL), we specialise in the expert application of intumescent coatings, providing crucial passive fire protection that safeguards lives, assets, and structural integrity. Our advanced intumescent systems are designed to react under fire conditions, creating a protective barrier that delays structural failure and slows the spread of fire
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Understanding Intumescent Coatings and Passive Fire Protection (PFP)
Intumescent coatings are a key component of Passive Fire Protection (PFP), a strategy aimed at containing fires and protecting structural elements to allow for safe evacuation and minimise property damage. Unlike active fire suppression systems (like sprinklers), PFP works by building in fire resistance to the structure itself.
When exposed to heat, intumescent coatings undergo a controlled chemical reaction where they rapidly swell and char. This process, known as “intumescence,” creates a thick, insulating foam-like layer. This char barrier significantly slows the rate at which heat penetrates the protected substrate (typically steel or timber), delaying the temperature at which the material would otherwise lose its load-bearing capacity. This critical delay buys invaluable time for emergency services to control the blaze and for occupants to safely evacuate.
Types of Intumescent Coatings: Cellulosic vs. Hydrocarbon
Intumescent coatings are broadly categorised based on the type of fire they are designed to protect against:
1. Cellulosic Intumescent Coatings
- Summary: These are designed for cellulosic fires, which are typical of those found in commercial buildings, residential properties, and offices (e.g., burning wood, paper, fabric). Cellulosic fires are characterised by a slower temperature rise and lower peak temperatures compared to hydrocarbon fires.
- Performance: Cellulosic intumescents swell to form an insulating layer that provides a specified period of fire resistance (e.g., 30, 60, 90, or 120 minutes) for steel and timber structures.
- Applications:
- Structural Steel Protection: Commonly used to achieve required fire ratings for steel beams and columns in schools, hospitals, retail spaces (such as our work on a supermarket refurbishment), and other public and commercial buildings.
- Timber Structures: Enhances the fire resistance of timber elements, including beams, columns, and panelling, allowing for safer evacuation and minimising property damage. Our Intumescent Coating at CPS House project is an example of applying these coatings in a commercial setting.
2. Hydrocarbon Intumescent Coatings
- Summary: These are highly specialised coatings engineered for hydrocarbon fires, which occur in environments where flammable liquids and gases are present (e.g., petrochemical plants, oil refineries, offshore platforms). Hydrocarbon fires are characterised by a highly rapid temperature rise and much higher peak temperatures.
- Performance: Hydrocarbon intumescents are formulated to react quickly and robustly to these intense conditions, forming a denser, more durable char that can withstand the severe thermal stress of such fires for a specified period of time.
- Applications:
- Oil & Gas Facilities: Protecting critical structural steelwork, pipe racks, pressure vessels, and storage tanks from the devastating impact of a hydrocarbon blaze.
- Chemical Processing Plants: Safeguarding key infrastructure where highly flammable chemicals are processed or stored.
- Power Generation & Heavy Industrial Sites: Providing essential fire protection for critical assets in sectors with high inherent fire risks.
Key Benefits of UCL’s Intumescent Coatings
Regardless of the fire type, UCL’s intumescent coatings offer significant advantages:
- Life Safety & Asset Protection: The primary benefit is delaying structural failure, which provides vital time for safe evacuation and minimises economic loss.
- Regulatory Compliance: Our coatings help facilities meet stringent building regulations, fire safety codes, and insurance requirements.
- Engineered Performance: Applied precisely to manufacturer specifications and fire test standards to deliver certified periods of fire resistance.
- Aesthetic Integration: Can be top-coated in various colours to blend seamlessly with architectural designs without compromising their fire-protective function.
- Durability: Formulated for long-term performance, offering robust protection against environmental factors once applied.
UCL: Your Trusted Intumescent Coating Specialists
Ultimate Coatings Limited is a leading provider of intumescent coating solutions. Our expertise spans both cellulosic and hydrocarbon applications, ensuring that we specify and apply the correct system for your unique fire risk profile. Our highly skilled and certified applicators are meticulous in their work, guaranteeing that each application meets the highest standards of quality and compliance.
We work closely with architects, engineers, contractors, and asset owners from the initial assessment and specification through to professional application, providing a complete and reliable passive fire protection service.
For expert advice and application of intumescent coatings that provide robust and certified fire resistance, trust Ultimate Coatings Limited.
Contact UCL today to discuss your fire protection requirements and let us provide a tailored solution for your building or industrial facility. Contact Us.
FAQ
The primary purpose of intumescent coatings is to prevent structural collapse if a fire occurs. When exposed to extreme heat, steel structures will eventually reach a ‘critical temperature’, which can be between 350 – 750°C. When this temperature is reached, the steel begins to lose its structural integrity and load-bearing capacity, leading to a collapse.
When an intumescent coating is applied, the high temperatures by the fire trigger a chemical reaction in the coating that causes the materials in the paint to expand. This controlled expansion creates an insulating layer that increases the steel’s fire resistance time, allowing extra time for the building to be evacuated and the fire to be extinguished.
Intumescent paint and coating is specifically designed for steel structures.
The exact performance of intumescent products can vary, but they typically offer 30, 60, 90 and 120 minutes of fire resistance depending on the specific type of coating.
We work with various intumescent coatings depending on the safety requirements of the project, for example achieving BS476 or EN13381. Please let us know your needs and we will advise on the most effective system.
Thin-film coating systems tend to be used for fire protection in commercial buildings with resistance requirements of 30, 60 and 90 minutes.
Thick film coatings systems are typically epoxy-based and are developed for use in buildings in the offshore or hydrocarbon industry, where the test heating process is more stringent than that for industrial and commercial settings.
Intumescent coating Project
FIREPROOF COATING REFURBISHMENT, BATH
he main contractors were refurbishing a commercial building and converting it into a supermarket. As a part of this renovation and in line with BS476 fire safety standards, the new steel beams required intumescent fire protection with a decorative finish.
