Protecting Structural Integrity with Expert Intumescent Paint Application Across the UK

At CS Passive Fire, we specialise in intumescent paint application to protect structural steelwork and other building materials from fire damage. Our experienced team applies high-performance coatings that expand under heat, insulating structures and enhancing fire resistance. We ensure full compliance with BS 476-21, BS EN 13381, and UK Building Regulations Approved Document B.

What is Intumescent Paint?

Intumescent paint is a fire-resistant coating that expands when exposed to high temperatures, forming an insulating char layer that protects underlying materials from heat. Commonly used on steel beams, columns, timber, and concrete, it plays a crucial role in passive fire protection systems.

Why is Intumescent Paint Important?

  • Fire Resistance: Delays the structural failure of materials during a fire.

  • Regulatory Compliance: Meets requirements under the Regulatory Reform (Fire Safety) Order 2005.

  • Structural Integrity: Extends the lifespan of critical building components during a fire.

  • Aesthetic Versatility: Available in various finishes to suit architectural needs.

  • Cost-Effective Solution: Provides long-term fire protection with minimal maintenance.

Our Intumescent Paint Application Services

We provide tailored intumescent paint solutions for various sectors and building types, including:

  • Structural Steelwork: Protecting load-bearing steel elements.

  • Timber Structures: Enhancing the fire resistance of wood.

  • Concrete Surfaces: Insulating concrete walls and columns.

  • Internal & External Applications: Coatings designed for indoor and outdoor environments.

Our Application Process

  1. Initial Assessment: We conduct a site survey to assess structural components and fire protection requirements.

  2. Surface Preparation: Clean and prepare surfaces to ensure optimal paint adhesion.

  3. Product Selection: Choose the appropriate intumescent coating based on fire resistance requirements.

  4. Application: Apply intumescent paint using spray, brush, or roller techniques.

  5. Dry Film Thickness (DFT) Checks: Measure coating thickness to confirm compliance.

  6. Final Inspection & Certification: Issue documentation verifying compliance with fire safety standards.

Types of Intumescent Paint We Use

We work with industry-approved products from leading manufacturers, offering:

  • Water-Based Intumescent Coatings: Low-VOC, eco-friendly solutions for internal use.

  • Solvent-Based Coatings: Durable protection for external steelwork.

  • Epoxy-Based Coatings: Heavy-duty coatings for high-risk environments.

Compliance & Quality Assurance

CS Passive Fire ensures that all intumescent paint applications adhere to UK and international standards:

  • BS 476-21: Fire resistance of structural elements.

  • BS EN 13381: Test methods for determining fire resistance.

  • Approved Document B: Guidance for fire safety compliance.

Our technicians undergo regular training and use advanced application techniques to maintain high-quality outcomes.

Who We Serve

  • Commercial & Office Buildings

  • Residential Developments

  • Industrial Facilities

  • Educational Institutions

  • Healthcare Facilities

  • Heritage & Listed Buildings

FAQs about Intumescent Paint Application

Q: How does intumescent paint protect steel structures?
A: When exposed to heat, intumescent paint expands to form an insulating char layer, reducing heat transfer and delaying structural failure.

Q: How long does intumescent paint last?
A: When correctly applied and maintained, intumescent coatings can last for decades.

Q: Can intumescent paint be applied to timber?
A: Yes, we offer specialised intumescent coatings to improve timber fire resistance.

Q: How do you measure the effectiveness of intumescent paint?
A: We conduct dry film thickness (DFT) checks and provide certification to verify compliance.

Q: Is intumescent paint suitable for external use?
A: Yes, we use solvent-based and epoxy coatings designed for external environments.

Get a Quote Today

Protect your building's structure with professional intumescent paint application. Contact CS Passive Fire today for a consultation.