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INTUMESCENT COATINGS

Intumescent Coatings & Fire Resistant Paint Spraying in London, & Greater London
NuColour London Sprayers specialise in providing high-quality intumescent coatings and fire resistant paint spraying in London and across the surrounding areas. Our professional team has extensive experience in applying protective coatings to agreed project specifications and manufacturer guidance.
White fire-resistant coating sprayed on steel beam below a metal ceiling at a construction site with scaffolding and brick wall.

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Before starting the job, we plan the health and safety measures for our work and coordinate site arrangements with your team. On the day, we complete the agreed work carefully, following the coating system requirements and agreed finish.

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Support structural fire protection with our expertly applied intumescent coatings to an agreed specification.

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Intumescent Coatings

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Our intumescent coatings support structural fire protection when correctly specified, applied and maintained.

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We’ve worked with some of the biggest names in the industry, delivering high-quality spray painting solutions across a wide range of projects. From commercial properties to industrial sites, we use suitable coatings and materials to meet the agreed specification, with care over preparation and finish.

Committed to Safe Working. Training. Planning. Site Care.

Quality work starts with safety. Our team follows project-specific health and safety procedures, with training and credentials relevant to the work. From working at height to site protection and environmental controls, we plan our activities around the agreed scope. Company accreditations do not certify a building’s fire performance.

Accreditations

How It Works: From Survey to Handover in 3 Professional Steps.

We apply intumescent fire protection to an agreed specification, with a clearly defined scope and application records for the completed work.

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Book a Site Survey, We Confirm the Work Scope

We begin every project with a detailed site survey. This helps us confirm the application scope, review the supplied fire protection specification, and assess access and site conditions.

During the survey, we:

  • Measure steel/timber dimensions and surface area
  • Check substrate condition and identify any prep or priming required
  • Assess access and environmental factors (scaffold, MEWP, ventilation, etc.)
  • Review the specified fire rating (30, 60, 90, or 120 mins) against the supplied design information
  • Agree the application scope using the supplied specification and manufacturer guidance

This allows us to quote for a defined scope, with assumptions and exclusions stated. It does not replace fire protection design.

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Surface Preparation & Site Protection

Before any coatings are applied, we carry out full site preparation in accordance with the agreed scope. This may include:

  • Cleaning and degreasing
  • Mechanical sanding or abrasion
  • Removal of loose or incompatible coatings
  • Application of compatible zinc phosphate or epoxy primers where specified
  • Full masking and protection of surrounding areas

We follow the specified coating manufacturer’s instructions for preparation, compatible primers and application conditions throughout our work.

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Intumescent Spray Application & Documentation

Our trained technicians apply intumescent coatings using professional airless spray systems, with dry film thickness (DFT) checked against the project’s agreed coating schedule.

Need a coloured finish? We can apply a compatible topcoat in matt, eggshell or gloss, with RAL, BS or designer matches subject to the system’s available range.

On completion, we issue:

  • Relevant product datasheets
  • Film thickness application records
  • Agreed application documentation for review by Building Control, fire officers or insurers

We can arrange handover meetings or digital application records. Building Control or insurer acceptance is not guaranteed.

Choose the Right Finish, Decorative Options for Intumescent Coatings.

Intumescent paint is typically white and designed for fire protection. If you want your steel or timber to match your project’s colour scheme, we can apply a compatible topcoat, with the available colours and finishes dependent on the specified system.

The topcoat provides the final visual layer over the intumescent base and must be suitable for use within the specified system.

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Matt

A flat, low-sheen finish ideal for modern interiors or where a subtle, minimalist aesthetic is required.
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Eggshell

A soft, durable finish with a gentle sheen, commonly specified for commercial environments and exposed steel in open-plan office spaces.
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Gloss

A bold, reflective finish that adds contrast and is ideal for feature elements or visually exposed structural steel.

Why NuColour

Why Choose Our Intumescent Coating Services in London?
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Enhanced Fire Protection

Intumescent coatings expand when exposed to heat, forming an insulating barrier that delays heating. Our fire-resistant paint spraying services in London cover suitable structural steel and timber applications, subject to the specified system and substrate.
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Working to Project Specifications

We work with contractors and architects to apply specified fireproofing systems, using relevant BS 476 or EN 13381 evidence where applicable.

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Expert Application

Using professional airless spray equipment, we work towards the agreed finish for each project, from large commercial units to heritage properties.

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Full Surface Preparation

We assess and prepare surfaces before application, including cleaning and compatible priming as required. DFT (Dry Film Thickness) checks follow application and drying.

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Long-Term Durability

Our intumescent coating systems are selected for the intended exposure, with inspection and maintenance needed for ongoing performance.

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Competitive, Transparent Pricing

We offer competitive quotes with a clearly defined scope, stated assumptions and any exclusions identified.

Intumescent Coating Contractors London, & Greater London - Fire-Resistant Paint Specialists
Looking for experienced intumescent coating contractors in London? We specialise in the spray application of fire-resistant paints for steel, timber, and suitable structural elements — working to the agreed coating specification.
Fire Resistant Paint for Steel Beams, Columns & RSJs
We apply intumescent coatings to structural steel including RSJs, columns, and exposed beams. Systems for 30, 60, 90, or 120-minute ratings depend on the steelwork and project specification.
Fire Retardant Coatings for Timber Joists, Rafters & Ceilings
Need fire protection for timber structures? We apply suitable intumescent coatings to joists, rafters, ceilings, and timber panelling where supported by product evidence for your project in London.
cleaning a steel beam ready for intumescent coating
yellow hb420 zinc phosphate primer
Commercial Intumescent Painting Services in London – Offices, Warehouses & Flats
Our intumescent coating services are ideal for office blocks, apartment developments, commercial units, and public buildings across London,& Greater London.
Passive Fire Protection Services for Construction Projects
Working with developers and contractors, we provide passive fire protection solutions on new build and refurbishment projects — including intumescent coatings and flame-retardant systems.
Fireproofing Services to Support Building Control Sign-Off
Need fire-resistant paint for a building control submission? We provide coating application records and relevant technical data sheets to support the project team’s sign-off process.
close up of yellow zinc phosphate primer coat
white intumescent coating spray applied
Intumescent Painting for Mezzanines, Industrial Units & Steel Structures
We regularly apply intumescent paint to mezzanine steelwork, portal frame units, and structural steel in industrial environments — with work planned to minimise disruption.
Fire Resistant Paint for Exposed Steel in Modern Interiors
Exposed steel is a popular feature in offices and loft apartments in London. Where structural fire protection is required, we apply intumescent paint with compatible decorative topcoats.
Fireproof Paint for Developers, Architects & Principal Contractors
Our team works closely with developers and architects to apply intumescent coatings to the agreed specification, with film thickness records, manufacturer datasheets, and application QA checks.
inspecting black flame retardant top coat after application
close up of black fire resistant top coat in eggshell
Emergency Fire Protection Painting – Same-Week Enquiries in London
Need fireproofing fast? Ask about current availability for urgent intumescent paint application. Start dates depend on access, preparation, drying times, and the agreed coating specification.
Intumescent Coatings for Listed & Heritage Buildings in London
We offer sympathetic fire protection for listed buildings, using water-based intumescent coatings where evidence supports the timber or lath construction and required approvals are in place.
Intumescent Paint for Ceilings, Soffits & Timber Panelling
We can apply suitable fire retardant coatings to decorative timber ceilings, soffits, panelling and wall linings, with low-odour options where the specified system allows.
Night & Weekend Intumescent Coating Services in London, & Greater London
Can’t shut down your site during business hours? We offer flexible out-of-hours intumescent painting services, including overnight or weekend shifts to minimise disruption.
Fire Rated Coatings for High-Risk Buildings & HMOs
We apply fire-resistant paint systems in HMOs, hostels, care homes, student accommodation, and other high-occupancy buildings in London, & Greater London, where specified for the project.
Fireproofing for Schools, Hospitals & Public Sector Buildings
We provide intumescent coatings for government and public buildings across London and the South East. RAMS and site-specific health, safety and safeguarding arrangements are agreed before work.
FAQs
Intumescent Coatings FAQ's?
Fire-Resistant Paint Contractors Near Me
Looking for reliable fire-resistant paint contractors in London, & Greater London? Our expert team at NuColour applies intumescent coating systems to steel, timber, and other suitable substrates to the agreed specification.
Intumescent Coating Specialists in London
We specialise in the professional application of intumescent coatings, providing passive fire protection to the agreed project specification and the coating manufacturer’s application requirements.
What Are Intumescent Coatings?
Intumescent coatings expand when heated to form an insulating char. Systems are available for suitable structural steelwork and timber. Often called fireproofing, they do not make a building or material fireproof; performance depends on the system.
Spray Applied Intumescent Coatings
We apply intumescent coatings using airless spray systems for an even finish and efficient coverage. Spraying can suit large commercial projects, while brush or roller application may be appropriate for smaller areas.
Fire Protection for Steel Beams and Columns in London
Our team applies intumescent paint to exposed steel beams, columns, and RSJs for specified fire resistance requirements of 30, 60, 90, or 120 minutes, subject to the steelwork details and suitable system evidence.
Fire-Resistant Coatings for Timber Structures
Intumescent systems for timber can suit historic buildings, roof trusses, joists and other woodwork where supported by test evidence. Water-based or solvent-based options depend on the specified system.
Commercial Intumescent Coating Services in London, & Greater London
From office buildings to retail units and warehouses, we provide commercial clients with intumescent fireproofing services tailored to their site needs and the agreed coating specification.
Passive Fire Protection for Industrial Buildings
We deliver intumescent coating services to industrial facilities including factories, data centres, plant rooms, and distribution hubs—with application planned around site access and operational needs.
Intumescent Paint Application for New Builds
Working with developers and principal contractors in London, we apply intumescent coatings to structural steel and suitable timber during construction, following the agreed specification and manufacturer’s guidance.
Fireproofing Refurbishments & Retrofit Upgrades
Upgrading an existing building in London,& Greater London? We apply intumescent paint as part of agreed retrofit fire protection works, subject to substrate checks and a suitable project specification.
Intumescent Paint for Residential Developments
Fire-resistant paint may be specified in shared residential buildings such as flats, HMOs, and new-build developments. We support developers and landlords with coating application to the agreed scope.
Building Control Requirements in & Greater London
Steel system evidence may reference BS 476 Part 21 or EN 13381-8, where accepted for the project. We provide coating records and data sheets to support review, not guarantee Building Control or insurer approval.
Fire-Rated Paint Systems We Use
We use premium-grade systems such as Thermoguard, Nullifire, and Sherwin-Williams Firetex where suitable for the specified substrate, environment, and fire protection requirements.
Intumescent Paint for Exposed Steel in London Offices
Exposed steelwork is popular in modern office design and may need structural fire protection. We apply intumescent coatings with compatible decorative topcoats, subject to the specified system and finish options.
Decorative Finishes Over Intumescent Paint
We can apply compatible decorative topcoats over intumescent layers in a wide range of colours and finishes. Available options depend on the coating system and manufacturer’s guidance.
How Long Does Intumescent Paint Last?
Fire-resistant coating lifespan depends on the system, exposure, damage and maintenance. Correct preparation, compatible finishes and regular inspections help maintain performance.
Emergency Intumescent Painting Services
Need urgent fireproofing before a building control or insurance inspection? Ask about intumescent coating availability in London. Lead times depend on scope, site conditions, and drying requirements.
Out-of-Hours Fireproofing for Active Sites
We understand that many sites can’t pause operations. Our team can apply fire-retardant coatings during nights or weekends to minimise disruption to your staff or ongoing works.
Intumescent Coatings for Schools and Public Buildings
We work with councils, schools, universities, and healthcare facilities in London, & Greater London, applying intumescent coatings to the agreed specification and site requirements.
On-Site Surveys and Fireproofing Quotes
We provide free site surveys and detailed quotes for fireproofing works across London, Greater London, Essex, Kent, Surrey, and Hertfordshire. Our quotes include product details, the specified fire rating, and an agreed scope of works.
Certified Fireproofing Contractors You Can Trust
See our accreditations page for current health and safety credentials and training. Our coating handover includes the agreed QA documentation and application records for the work completed.
Why Choose NuColour for Intumescent Coatings?
With years of experience in specialist spray painting, health and safety leadership, and large-scale commercial project delivery, NuColour is a trusted fireproofing partner for principal contractors, developers, and building owners.
Spray Applied Intumescent Coatings – Spraying Compared with Brushing
We use airless spray technology to apply intumescent paint efficiently and evenly. Brush or roller application may suit smaller areas; the chosen method must meet product guidance and film thickness requirements.
How Intumescent Paint Works – What You Need to Know
When exposed to high heat, intumescent paint expands to form a charred barrier that insulates the surface underneath. On structural steel, this helps slow heating and delay the loss of load-bearing capacity.
What Is the Best Intumescent Paint in the UK?
The best system depends on the project. We use Thermoguard, Nullifire, and Sherwin-Williams Firetex where the selected product’s test evidence is suitable.
Cost of Intumescent Coating Services – What Affects Price?
Intumescent coating costs vary based on the size, fire rating required (30/60/90/120 mins), substrate, and accessibility. We offer prompt quotes and fixed prices for an agreed scope.

Solutions

Explore a range of professional solutions designed to enhance, protect, and transform your space with expert precision and care.

Residential Painting

Transform your home with our bespoke residential painting services. Whether it’s revitalising interiors, exteriors, or specialised finishes for kitchens, we provide flawless results that reflect your personal style and enhance your living space.

Solution

Residential Painting

Commercial Painting

Enhance your business environment with our comprehensive commercial painting services. From office interiors to large-scale exterior cladding, our expert team delivers precision, durability, and aesthetic excellence, tailored to your business needs.

Solution

Commercial Painting

Industrial Coatings

Secure and enhance your industrial spaces with our specialised industrial coating solutions. We offer robust epoxy and chemical-resistant coatings, durable floor treatments, and marine paints that ensure safety, longevity, and compliance with industry standards.

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Industrial Coatings

Specialist Coatings

Our specialty coatings cater to unique needs such as fire retardant applications, anti-graffiti surfaces, and historical restoration. Each solution is crafted to provide specific protections and finishes, maintaining aesthetics while ensuring structural integrity and compliance with regulatory standards.

Solution

Specialist Coatings