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Intumescent Paint
Intumescent paints help protect buildings by slowing the spread of fire, providing between 30 and 120 minutes of resistance. Unlike standard fire-retardant or heat-resistant paints, these coatings expand under extreme heat to form a protective barrier. Perfect for both indoor and outdoor use, they reinforce structural integrity while offering a smooth, stylish finish. Available in classic white or over 4,400 colours, they meet strict fire safety regulations and enhance the look of exposed steel or timber beams.
Subcategories
Bollom Brosteel Ultra 60
A new and improved revolutionary thin-film waterborne white intumescent paint for standard, interior structural steel members, providing 30 minutes fire protection in only one coat and 60 minutes in two coats - see below for details. For internal use only Water-based - quick drying thin-film intumescent coating Certificate of Conformance...
Thermoguard Thermocoat WI Ultimate
Interior use, water-based intumescent paint system, providing up to 90 mins fire resistance to structural steel and cast iron with a minimum number of coats. Optimised for Universal Beams, Columns and other open section steel: See Thermoguard Thermocoat WO Ultimate for steel hollow sections: For protection to exterior environment...
Thermoguard Timbercoat
An intumescent basecoat used as part 1 of a system to achieve 30 or 60 minute fire resistance for compartmentation. Can achieve 30 or 60 minutes Fire Resistance in certain instances subject to a specification from the Technical Department. For BS Class 1/0 and EN Class B only see Thermoguard Timbercoat Insulating Basecoat. Interior and...
Zeroflame Aquasteel WB+
White thin-film waterbourne intumescent coating with new and improved formula to provide 30 and 60 minutes fire resistance on standard structural steel members in internal environments. It provides an easier and more efficient alternative to cladding steel members in plasterboard. New improved formula Achieves both 1/2 hour and 1 hour fire...
Thermoguard Fire Varnish 30 & 60 Minute System
A clear intumescent varnish (with 9 woodstain shades available) for interior and exterior timber surfaces. Each pack contains the correct amount of basecoat (Fire Varnish Basecoat) and topcoat (Thermoguard Fire Varnish Overcoat (Interior) or Thermoguard Fire Varnish Overcoat (Exterior)) to ensure protection is achieved inline with the...
Thermoguard Wallcoat 30 & 60 Minute System for Plasterboard
Intumescent paint system with 4,000+ colour options for interior plasterboard and cement board ceiling and wall surfaces. These packs have been created to help users ensure they are purchasing sufficient product for their project. Each pack contains the correct amount of basecoat (Wallcoat) and topcoat (Thermoguard Wallcoat Smoke & Flame...
Thermoguard Wallcoat 60, 90 & 120 Minute System for Concrete
Intumescent paint system in 4,000+ colours for interior fire rated concrete surfaces requiring an additional 30mins fire resistance - not subject to traffic. These packs have been created to help users ensure they are purchasing sufficient product for their project. Each pack contains the correct amount of basecoat (Wallcoat) and topcoat...
Jotun Steelmaster 1200WF
One component waterborne acrylic thin film intumescent coating independently tested and approved for fire protection of structural steel exposed to cellulosic fire up to 180 minutes. Suitable for properly prepared carbon steel substrates. Please Note: We strongly recommend Tricomb Plastic Wet Film Gauges are used to help ensure correct film...
Thermoguard Safeceilings Onecoat Ultra Matt
Flame Retardant Intumescent protection in one coat for painted or new primed ceilings, in 1,400+ matt and LRV colours. Durability and infection control are much less needed on ceilings and areas free from wear and tear. Decorative fire upgrade and finish in one coat Protects ceilings to BS EN Class B & Class O Please Note: Onecoat...
Nullifire SC802 On-Site Water-Based Intumescent Basecoat
A water-based, white, thin film intumescent coating for the protection of internal structural steelwork. Nullifire SC802 can provide up to 60 minutes fire resistance. Includes Optifire+ technology - reliable and traceable fire protection Please Note: We strongly recommend Tricomb Plastic Wet Film Gauges are used to help ensure correct...
Thermoguard Wallcoat
Intumescent basecoat in 4,000 colours for overcoating with Thermoguard Wallcoat Smoke and Flame Retardant Topcoat to upgrade potentially dangerous 'multi-layer' - previously painted - walls and ceilings in communal areas to 30 or 60 minutes protection. Achieves EU and new British safety standards on walls and ceilings For painted plaster,...
Nullifire SC801 On-Site Water-Based Intumescent Basecoat
Nullifire SC801 On-Site Water-Based Intumescent Basecoat is a water-based, white, thin film intumescent coating for the protection of internal structural steelwork, providing up to 120 minutes fire resistance. Please Note: We strongly recommend Tricomb Plastic Wet Film Gauges are used to help ensure correct film thicknesses are achieved...
Thermoguard Thermocoat S
Intumescent, solvent based paint for structural steel and cast iron. Provides up to 90 minutes fire resistance, maintaining the structural integrity of buildings. For protection to exterior environment steels For interior Universal Beams, Columns and other open section steel see Thermoguard Thermocoat WI Ultimate For interior steel...
Nullifire SC902 Fast Track On-Site Intumescent Steel Coating
SC902, a low VOC, one coat, two-pack high build system, based on patented technology to provide a fast cure effective structural fire performance for steelwork, up to a 120 minute fire rating. Can be applied to a smooth matt finish, and a compatible top seal can be applied if a decorative finish is required. Includes Optifire+ technology -...
Thermoguard Timbercoat 30 Minute System
A 4,000+ colour intumescent paint system for interior and exterior timber surfaces. These packs have been created to help users ensure they are purchasing sufficient product for their project. Each pack contains the correct amount of basecoat (Timbercoat) and topcoat (Thermoguard Smoke & Flame Retardant (SFR) Dualcoat) to ensure...
Protecta Steel Paint FR-1
Single-component, fire-resistant acrylic paint available in white or 27 colours. Designed for use on loadbearing structural steel, including beams and columns. Provides up to 60 minutes of fire protection without requiring a primer or topcoat. Non-toxic, near zero VOC, and emission-free, making it safe for indoor environments. Durable...
Thermoguard Thermocoat WO Ultimate
Water-based intumescent paint system providing fire resistance to structural steel and cast iron with a minimum number of coats. A compatible decorative overcoat system ensures the system will enhance the building’s architectural and design features. Optimised for CHS, SHS and RHS hollow sections See Thermoguard Thermocoat WI Ultimate...
Thermoguard Timbercoat Door Upgrade System
An intumescent paint system to upgrade solid doors to 30min Fire Resistance, with 4,000+ colour options. Available as a convenient pack containing the required basecoat and topcoat to protect 2 doors in a white or coloured Eggshell or Gloss finish Thermoguard UK will issue a Fire Certificate for Authority approved projects following...
Thermoguard Fire Varnish Door Upgrade System
An intumescent varnish system to upgrade solid doors to 20 or 30min Fire Resistance: Available as a convenient pack containing the required basecoat, topcoat and mastic to protect 3 doors in a clear or woodstain coloured Matt or Satin finish Thermoguard UK will issue a Fire Certificate for Authority approved projects following completion...
Bollom Intulac Ultra Basecoat
A clear, high-performance fire protection varnish coating for interior wood surfaces. Can be applied over existing varnish Simple 3 coat system to achieve Class 0 Single pack products Protects and highlights natural beauty of the wood Diminishes flue-gas density/temperature Insulates against heat More Info View Similar Products...
Thermoguard Timbercoat 60 Minute System
An intumescent paint system in 4,000+ colours for interior and exterior timber surfaces. Each pack contains the correct amount of basecoat (Timbercoat) and topcoat (Thermoguard Smoke & Flame Retardant (SFR) Dualcoat) to ensure protection is achieved inline with the manufacturers recommendations to the respective area in question....
Thermoguard Fire Varnish Basecoat
A clear intumescent varnish that is the first coat of a 2 coat system (3 coats externally) for the decorative Fire Protection of timber and timber derived substrates to BS Class 1, Class 0 and EN Class B s2 d0. See Thermoguard Fire Varnish Overcoat (Interior) or Thermoguard Fire Varnish Overcoat (Exterior) to complete the system. Complete...
Tor Torrex Flameshield Ultimate Build Coat
High build intumescent coating (part of the Torrex Flameshield Ultimate System) for use over Torrex Ultimate Primer on existing multi-layered painted surfaces to reduce the spread of flame in the event of a fire. Only to be applied over Torrex Ultimate Primer Allows users to upgrade the fire performance of existing coatings on walls and...
Thermoguard Wallcoat Insulating Basecoat
Intumescent basecoat to Thermoguard Wallcoat Smoke and Flame Retardant Topcoat in 4,000 colours,to upgrade potentially dangerous ‘multi-layer’ - previously painted - walls & ceilings in communal areas. Achieves EN Class B s1 d0 spread of flame on walls and ceilings Exceptional adhesion and permanent protection For painted plaster,...
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When to use intumescent paint
Intumescent paint is essential for fire protection in commercial, industrial, and residential buildings. Applied on-site or off-site, these coatings are vital in offices, warehouses, schools, hospitals, and high-rise buildings where passive fire protection is required.
Thin film coatings provide a smooth, decorative finish for exposed steel, while thick film epoxy coatings suit harsh environments such as offshore platforms and industrial sites.
What materials can intumescent paint be applied to?
Intumescent paint is designed for a range of materials, including structural steel, cast iron, timber, and plasterboard. These materials are commonly used in construction and require additional fire protection to meet safety regulations. Before application, it is essential to check the manufacturer’s product datasheet to ensure compatibility and determine the appropriate primer and topcoat system for optimal performance.
How does intumescent paint work on different substrates?
Intumescent paint functions by expanding when exposed to high temperatures, forming a thick, insulating char layer that protects the underlying material from fire damage. Its effectiveness varies depending on the substrate:
- Steel and Cast Iron: Intumescent coatings for steel expand significantly in the event of a fire, insulating the metal and preventing it from reaching critical temperatures that could lead to structural failure.
- Timber: When applied to wood, intumescent paint helps slow combustion by forming a heat-resistant barrier, delaying the spread of fire and reducing the risk of collapse.
- Plasterboard: Though plasterboard has some natural fire resistance, intumescent coatings can enhance its performance, providing additional protection in fire-prone areas.
- Concrete: While less common, intumescent coatings can also be used on concrete surfaces to improve fire resistance in certain applications.
Can intumescent paint be used in homes?
Yes, intumescent paint is commonly used in residential properties, particularly for protecting exposed structural steel beams and columns. In open-plan designs where steel is an integral feature, applying intumescent coatings ensures compliance with fire safety standards while maintaining and matching colour schemes.
Additionally, intumescent coatings can be used on wooden elements, such as timber-framed walls, ceilings, and floors, to enhance fire resistance. Homeowners should ensure that the chosen product meets relevant building regulations and consult a fire safety specialist if needed.
How is paint thickness measured?
Using a Tricomb Plastic Wet Film Gauge ensures proper application thickness. Always follow manufacturer datasheet application thickness guidelines.
Why Shop at Rawlins?
Rawlins Paints supplies certified intumescent coatings from top brands like Jotun, Thermoguard, Nullifire, Bollom, and Zeroflame. Our fireproofing solutions meet safety standards without compromise.
Our Technical Team ensures you select the right primer and topcoat system, considering fire ratings, substrate compatibility, and environmental exposure. Contact us for expert advice and a quote.