Promote a healthy airflow. PTF= Painted Top Flange. It becomes far thicker than the original coating. Thermocoat is a water-based intumescent paint system providing fire resistance to structural steel and cast iron of up to 120 mins with a minimum number of coats. Over 40,000 products. This product is a made-to-order product. 1,2 The objective is to increase the time for evacuation of humans and animals and for the fire brigade to arrive. Intumescent paints are Nullifire SC802 - 5Ltr. It provides you with adequate time for carrying out rescue operations. 7 STRUCTURAL STEEL, FRR 30/60/90/120 - INHIBITIVE ALKYD PRIMER + W/B INTUMESCENT (Environmental Classification ISO9223 – C1 - C2) Location: Interior Concealed Steel. . NATIONAL INTUMESCENT PAINT PRODUCT DESCRIPTION A special resin based single component Intumescent paint for fire protection (FP), of structural steel work up to 120 minutes. EP/FS/INT offers up to and including 90 minutes of fire protection and can be applied both on and off-site. €17. Stormguard Classic Threshold Draught & Rain Excluder Black 914mm (568TF) compare. Water-based intumescent coating for interior steelwork. 33 inc. Easy to apply and suitable for multiple substrates and services. Fire Performance. Firestop Fire Rated Intumescent Letterbox Polished Silver 306mm x 70mm (367HP) (3) compare. The SE specified a channel steel size of 125 x 65 for the 4 metre span. 1 out of 5 stars 14 £ 95 . The door frame to my second floor flat looks like it's missing its intumescent strips. This unique, non-toxic formulaThe paint product is applied to the steel in layers as needed to generate the thickness that corresponds to the level of protection mandated by the building code. Excellent all-around performance. The lightest steel section listed in UL 263 has a W/D ratio of 0. Firefree 88 is a premier fire-resistant coating that provides a practical and cost-effective solution. There are many types with many specific properties for a wide selection of projects, suitable for use indoors and outdoors, which can be used domestically or commercially. 1. This study concentrates on formulating a “fit-for-purpose” 30-60 protective coating via the EN 13381 standard regime. Jotun Steelmaster 1200WF is a one component waterborne acrylic thin film intumescent coating independently tested and approved for fire protection of structural steel exposed. Can Nullifire Intumescent be applied above? With unknown coatings, there is a possibility that under fire conditions they may fail and delaminate from the steel, removing any additional coatings applied above. CCE . Some of its features are: a fire to insulate the steel, as shown in Fig-ure 2. Share this article: Introduction. Delivery. When exposed to the heat of a fire, that binder melts, and the chemicals quickly begin to react. 8-12m²/Ltr Order No Nonsense Intumescent Sealant White 310ml at Screwfix. For more information on any of our products or service. Designed to protect up to 60 minutes on a wide range of I section beams and columns. of steel. Intumescent coatings can be applied to a wide range of surfaces, including steel, concrete, and wood. 99 Inc Vat Click & Collect Not available for delivery Hammerite Smooth Smooth Metal Paint White 750ml (69444) (150) compare £19. Find code-compliant intumescent paint. structural steel. Applying intumescent paint to wood. Intumescent fire seals expand in the event of a fire and seal-off the gap between the door and the frame, preventing the spread of fire and smoke. This expansion process increases the volume and lowers the. While the terms fire-retardant paint and intumescent paint are sometimes used interchangeably, they refer to slightly different. Factory Controlled Process. Preparation: Abrasive blast to AS. Our intumescent paints have been tested to the following standards: European Union: EN 13381-8 United Kingdom: BS 476-20/21. Economy and Speed. Suitable for Fire Doors. The micro-holes detected in this intumescent paint acted as physical barriers and caused the delay in heat reaching the FRP material surface. g. ¼". Design. 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. The two (2) 0. Li et al. Tenmat’s Team of Research and Development scientists are more than happy to discuss specific customer requirements and to collaborate in order to. g. Compare. 30 Mins Fire Protection. Intumescent paint is a type of reactive paint that expands when exposed to heat, forming a char barrier that helps to insulate the underlying material and slow the spread of fire. Fire Rated to 30 & 60mins. Jotun’s operations ensure the very best inIntumescent paint, or more accurately coating, reacts to heat by swelling in a controlled manner. In one the the rooms it is intricate cornicing, would would be almost impossible to do with a brush, so was hoping to use the spray method, and do the ceiling in this room at the same time. Screwfix customers rate this product 4. View Product. The traffic involved. Thousands of customer product reviews. This unique, non-toxic formula creates a safe and effective flame-seal barrier on wood surfaces that slows the flame down allowing extra time for occupants to exit, protect property. Details Add To Cart. Fits Frames for External Doors. com Jotun Steelmaster 600WF Intumescent FireProof Paint For Steel Beams & Columns (5 Litre) 4. Fire protective sprays. Order online at Screwfix. Reacting at temperatures from 270 ° C to 300 ° C, intumescent paints and varnishes expand about 20 times. Get Quote. Conforms to BS476 Part 21. Most high-rise and steel-framed constructions use intumescent coatings to protect them from the fire. It's the most widely used method of fire protection for steel structures because it's cheaper to use, easy to apply and readily available. FSi . Intumescent coatings are epoxy-based, paint-like mixtures applied to the primed steel surface. Before being coated with a compatible primer, the wood needs to be clean and free from dirt or any other contaminant that may prevent the bonding. The thermal conductivity of this layer is low and thus it can isolate the steel structure from the direct effect of. Step one. Apple Pay accepted in store. By Melanie Boyden 07/11/2023. A water-based, white, thin film intumescent coating Nullifire has launched SC802; a new water-based intumescent basecoat,. Intumescent or fire door strips are fitted around door frames to prevent fires from spreading. 4 CE marked product, ETA 15/0439 Assessed to ETAG 018-2 for all durability. The intumescent coating products listed on this page are available for interior and exterior use and come in a full range of colours. Check the test certification and what the intumescent coating’s performance in fire actually is. Step two. It can be applied both on and off site. However the groove is 8mm wide and 4mm deep. £21. A full range of top sealers, both waterborne and solvent-based are. The recommended use for this read more ». HR Prof. As the solvent evaporates, film formation occurs, leaving the binder and pigments on the surface as a 'dry film'. WT-102 Class A or B ASTM E84 interior, WHITE latex based intumescent fire retardant coating. One method is to apply a fire-resistant coating, such as intumescent paint designed for steel. A water based CEP free thin film intumescent coating to provide fire resistance up to 120 minutes on structural steel. Independently tested and approved for fire protection of structural steel exposed to cellulosic fires, BS476 Pt 20 and 21, it is a. Double layer 15mm Gyproc WallBoard each side of Gypframe 48 S 50 studs provides 90 minutes. Jotun Aluminium Paint H. These include Rigid intumescent (as seen with the FF102 and FF102B materials), compressible intumescent (Such as FF107, FF108 & FF109) as well as in the form of intumescent sheets. 73 (incl VAT) Intumescent coating for steel and other metals offering up to and including 90 minutes of fire protection. Waterborne intumescent coating designed for internal structural steelwork. Order online at Screwfix. FREE next day delivery available, free collection in 1 minute. It provides an easier and more efficient alternative to cladding steel members in plasterboard. Fire resistant paint releases a flame dampening gas as a response to intense heat. The intumescent paint is a coating system that is used primarily for structural steel fire protection and is spray-applied directly onto steel beams, columns, sections, truss, etc. Thermocoat is a water-based intumescent paint system providing fire resistance to structural steel and cast iron of up to 120 mins with a minimum number of coats. com. Flat, flameproof paint for raw wood, closed cell EPS Foam and other surfaces. In this work, new fire barriers combining the use of two different intumescent paints (to mix their benefits) and a metal laminate structure have been evaluated. Horizontal and vertical membrane. One Coat Instant Waterproofing Protection of Flat and Pitched Roofs, Roof Lights, Flashings, Fibre Cement Sheeting, Gutters, Slate, Asphalt, Lead, Metal and Roofing Felt (Primed). Both type of Intumescent paint are tested to BS476 Part 21:1987 on structural steel beams & columns for up to 2hours fire resistance. It must be applied in layers or coats of 250 – 300 microns and when the thickness is greater, allow to dry between coats 8 hours and 24 hours for the final coat of sealer or enamel. View Product. However, coating burns and burns, and is not going to let the flames advance over to another beam or wall. 1. Filter By Manufacturer. 1. The intumescent paint expands when heated to protect the steel. Remaining paint on the surface should be removed, especially if it’s peeled or cracked. Envirograf Waterborne Intumescent Fire Protection Coating for Steel and Aluminium. You may have heard of the term “intumescent coating” but may not be familiar with what it really means. HENSOTHERM® 910 KS. Apply in a wide range of temperature and humidity conditions. Treviri mitred lever on concealed fix screw on rose. Choose from top trade brands. IP20. 047” of intumescent paint to provide 1-hour fire-resistance as compared with UL N635. Indeed, ICs form a thin protective layer on the steel surface, that if exposed to fire or elevated temperatures, expands in volume with a consequent. Provide clear information to keep the workforce and visitors safe in case of an emergency. Delivery Info. Fire & Smoke Spread Prevention. 5 standard to then allow a new tested. These intumescent systems of passive fire products are installed and remain passive until they are required to do their fire protection job. Intumescent paints are designed to temporarily protect objects from losing their strength in a fire. SECTION 099646 - INTUMESCENT PAINTING. Aluminium Construction. It has been tested in service openings 25mm x 25mm and 50mm x 50mm to seal penetrating services such as small metallic pipes, plastic pipes, cables and cable bunches. Metal Paints. As a. Over 40,000 products. com. Intumescent steel paints and coatings are available in Water and Solvent based forms, providing protection to most structural steel sizes of 30, 60, 90 and 120 minutes fire protection, utilising thick and thin film intumescent coating technology. All have fire check door and frames and have the intumescent door seals inserted into the frame rebates. 84 – £ 134. The paint colour, as supplied, will be mixed to the precise. Made to order or imported product subject to avalability. £15. Supplied. Fill holes and cracks with ease, suitable for many applications. Intumescent paint is allowed to be used to protect the structural steel members of buildings. Intumescent Coatings - Steel. Sometimes referred to as SFRM, this comprehensive product line has a minimum density of 240 kg/m3 and exceeds industry in-place performance standards. Ultimately, what we are suggesting is there are multiple factors that need to be considered when specifying an intumescent coating system. . It’s ASTM E-119 and ASTM E-84 compliant. Buy Sealants & Adhesives at Screwfix. Steel preparation (Primed or unprimed steel, galvanized); Top seal (quality of the top seal); Maintenance schedule (accessibility and frequency); and. Zeroflame Aquasteel WB+ is a white thin-film waterborne intumescent coating with a new and improved formula designed to provide 30 and 60 minutes fire resistance on standard structural steel members in internal environments. Fire-resistant paints are usually ASTM E-119 tested and certified. Intumescent coatings are paint-like materials applied to structural steel with typical thickness of 1 to 3 mm. Sealants are also often commonly known as silicone sealants or mastics and are used when sealing areas that need a waterproof or airproof seal. Different bilayer designs have been considered for the protection of steel. 75. (couple of images attached) I can only seem to find 10mm wide strips. Intumescent paint is a special type of coating that swells when exposed to high temperatures. £7. It is suitable for primed or previously painted wood, drywall, cellulose tile, cured plaster, masonry and metal. Intumescent paints are a paint-like material that, whilst inert at low temperatures, reacts with heat at over 200°C, swelling to form a char layer that covers. Product Thickness. While intumescent paint may appear to be a regular paint, it’s not— it’s actually a complex of chemicals held inert in a binder. Great adhesion to substrate. Order online at Screwfix. No additional sealers or top coats are required unless specific lightfast coloured finishes are required. Thermoguard Thermocoat WI Steel Intumescent Paint is a water-based intumescent paint system providing fire resistance to structural steel and cast. Position of groove can be altered with the router plunge. 120 Mins Fire Resistance. Thin film intumescent coatings 22 Boards 24 Partial protection 25 Concrete Filled Hollow Sections 25 Design of Composite Steel Deck Floors for Fire 26Intumescent paint. Accommodates Movement of ±25%. 18 This foam layer prevents the material. . Provide fire protection. com. £2. Intumescent Paint is designed primarily for Off-Site application in a controlled paint shop environment. It impedes the spread of fire for up to 4 hours, giving a longer time that allows to save many lives and properties. Astro ISS-S Intumescent Paint is an intumescent paint system providing fire resistance to structural steel and cast iron of up to 120 mins with a minimum number of coats. The Steelguard Intumescent Paint should be cut out to one or two centimetres from the damaged area, in every direction back to a sound edge. Specifically designed to provide rust inhibiting protection to ferrous metalwork. 95 Applying intumescent paint to wood. Availability: In Stock. 42 - £96. Pre-cut kit includes protection for the body, forends and keep. MW= Mineral Wool. Less paint will be required for ratings of 60 mins and 2 Grs. 15 mm. Gap Seal: 23-28mm. Available in clear varnishes or a range of colours. Easy to specify and apply. three-twenty, Mar 4, 2006. Intumescent coatings (ICs) are often used for protecting steel buildings during a fire when the structural, aesthetic, and architectural features of the structural members should be preserved. Is intumescent paint expensive. This paint is particularly characterized as being eco-friendly and resistant to the spread of fire on iron and cement surfaces. The body of the kit has tearable score lines that allow it to be used with 76mm (57mm backset) and 64mm (45mm backset) case sizes. Steelmaster 600WF Intumescent Paint has low VOCs and is specially designed as passive fire protection for steel constructions. These are suitable for opening sizes of: 540x640mm and 540x750mm. Buy Exterior Paints at Screwfix. Sprayed Fire-Resistive Materials (SFRMs) and Intumescent Fire-Resistive Materials (IFRMs) are designed to maintain the structural integrity of steel, and in some cases, other structural items, such as concrete, under fire conditions and to maintain safe conditions for a specified period of time. Make sure the exposed substrate is dry, clean and free from any contamination. Intumescent product; Flame Spread Rating: Class "A" when tested in accordance with ASTM E-84 (NFPA 255) and S- 102. 60 Mins Fire Resistance. Here at B&Q we have a huge selection. Showing 24 of 10,200 products. Intumescent Paint Intumescent Paint. This is really important to make sure that the paint will give the correct fire protection required. RAL, RAL Design, BS, NCS & the new NCS 2050. The critical temperature of steel is between 350°C –750°C. White Flat Latex Intumescent Fireproofing Flame Retardant Paint Coating for Wood. £179. Withstands temperatures of up to 120°C and prevents the spread of fire, smoke and toxic gases. non-load bearing) The Certified DFT is the amount of insulation required to limit the rise of steel core temperature and/or reduce heat transfer through coating to steel. An intumescent fire-proof coating for steel structures will expand and carbonize in the case of a fire to form a porous carbonaceous layer that is more than ten times or even dozens of times thicker than the original coating [14]. Fire & Smoke Spread Prevention. Intumescent paint costs $4 to $12 per square foot. FREE next day delivery available, free collection in 1 minute. Intumescent Pros. Clear or stained finishes enhance the natural beauty of the wood while fire protecting new and previously varnished surfaces. For more aggresive environments, prepare surfaces with Rust-Oleum 3369/3380 CombiPrimer Anti. Sherwin Williams Firetex FX5120 WB Intumescent, White, 20 Litres. Top coat for Bollom intumescents for wood and steel; Provides Class 0 on non-combustible surfaces; Available in 4,400+ colours, inc. Screwfix customers rate this product 4. Steel loses its loadbearing capacity when its temperature rises above 550ºC during a fire; therefore structural steel protection with intumescent coatings is required to preserve the stability of the building structure in the event of a fire. The stability of a building depends on loadbearing structural steel. Several light coats will give a better finish than a single heavy coat. It is the most effective galvanized steel paint solution for treating hot dip galvanized steel, with a host of key advantages over alternatives such. See our other intumescent paints for steel here. These products include, but are. Steel Wood Gypsum/Drywall Fabrics Wood Resources Steel Coverage Calculator Steel Dimensions Table Testing LEED FAQ. Great for tiles and roofs. Get Quote. Sealants are also often commonly known as silicone sealants or mastics and are used when sealing areas that need a waterproof or airproof seal. AdJotun Steelmaster 1200WF is a 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. 99 Inc Vat. Jotun Steelmaster 1200WF is a 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. is a one component styrene modified oxidatively drying alkyd coating that is heat resistant up to 250°C. 15Ltr Plastic Tank. Bare Mild Steel. Great for tiles and roofs. Any advice is appreciated. 3M™ Expantrol Flexible Intumescent Strip E-FIS is an intumescent tape designed to seal the air spaces between doors, frames and glass to help prevent the spread of fire, smoke, toxic gases and other byproducts from penetrating into adjacent areas. £19. They can be divided into two types, non-reactive, of which the most common types are boards and sprays, and reactive, of which thin film intumescent coatings are the most. Reviews. Aluminium Construction. Self-adhesive backing for ease of application. This is the temperature at which its nominal tensile strength and load-bearing capacity significantly reduces, increasing the risk of structural collapse. is there any coating that can be applied to bring this surface into the new fire regulations giving 30minute resistance to fire please Tel. Non Photoluminescent "Fire Exit Man Down Right Arrow" Sign 150mm x 400mm (977FG) (1) compare. Thermoguard Thermocoat WI Steel Intumescent Paint. Thin film intumescent paint for steel. About. 99 Inc Vat. These bilayers are composed of the overlay of two intumescent coatings deposited or not on an aluminum foil. Very aesthetically pleasing — looks like conventional paint. A compatible decorative overcoat system ensures the system will enhance the building’s architectural and design features. Our brands . The final thickness of these coatings typically ranges from 0. 98. Water-based 1-pack intumescent coatings for interior use. Now for all bizarre, wierd and outlandish requirements I turn to a. Structural Steel. Preparing steel for intumescent paint. building inspectors usually ask for 2x 12mm plasterboard followed by a skim coat. Standards Tested To Results . Applies like a regular paintRust-Oleum CombiColor Original is a primer and topcoat in one for interior and exterior use on bare metal, manually de-rusted metal, surfaces primed with Rust-Oleum 3369/3380 CombiPrimer Anti-Corrosion, or previously painted surfaces. ® WB3. With its purpose to lock out moisture and reduce corrosion, it acts as a barrier and protects against general damage or weathering. 5. No Nonsense General Purpose Silicone Clear 310ml 12 Pack (89398) (717) compare. Usually requires surface prep, plus a primer. Product Specifications. Depending on the specific formulation, fire resistance classes of up to F120 (120 minutes of. Nullifire has been a truly world-leading supplier of passive fire protection for 50 years! And, we now have a presence in six continents with nine factories and 24 sales offices worldwide, through our mother company Tremco CPG. Fire retardant paint. Thermo-Lag 3000-SP. View Product. RAL, RAL Design, BS, NCS & the. Please call us now on +353 1 8394 005 or Contact us to get a quote for your Intumescent Coatings solution. ES/VFR Clear Varnish Fire Retardant Coating is a single pack fire retardant base coat that requires a top coat, we recommend the use of HW Enviro Clear top coat for internal use and HW SUPERB Clear top coat for external. Screwfix Select. When the paint is exposed to heat it will expand and thicken. Step two. Designed specifically for the coating of structural steel, intumescent paint swells when exposed to high heat. A compatible decorative overcoat. ES/VFR Clear Varnish Fire Retardant Coating is a single pack fire retardant base coat that requires a top coat, we recommend the use of HW Enviro Clear top coat for internal use and HW SUPERB Clear top coat for external. No-Burn Plus ThB is tested and approved to coat the leading brands of spray polyurethane foam. This foam then acts as insulation to the steel providing the steel with the fire rating required. 93 Inc Vat. Available in White. Tested and assessed to EN 13381-8, BS 476-20/21 and AS 1530. paint and a top coat. Suitable. The intumescent products and operations are audited and listed by a certified third-party laboratory to ensure that the intumescent products perform as expected to ensure building fire. In buildings under Purpose Groups VI & VIII, where there may be presence of corrosive atmosphere that may affect the effectiveness of intumescent paints for protection to structural steel members of buildings, such proposal shall be subjected. All available products are certified, capable of protecting steel, structural steel, and cast iron structures from fire for 30, 60, 90, 120, and 180 minutes, reducing the heating time of the metal. Address: 131 Smokehill Lane Address: 131 Smokehill Lane Woodstock, GA 30188 - USA Woodstock, GA 30188 - USA Telephone: 770-517-6869 24 Hour Emergency Hotline: 800-535-5053. Flat, flame proof paint for raw wood, closed cell EPS Foam and other surfaces. Thermoguard Timbercoat expands to create a barrier to insulate wood from heat and oxygen to prevent wood burning & fire penetration. Steel: Intumescent steel paint is designed to increase the time period that a structural load bearing steel within a building will last during a fire. Up to 4 hours fire rating, tested to BS 476-20-1987 and BS EN1366-3-2009. Usable down to 5°C. Steel structures are widely used in building construction due to their high mechanical strength, ductility and execution times. 99 Inc Vat. EP/FS/INT is a waterborne product with low odour, an ideal solution for on-site application. WF= Wide Flange. Order online at Screwfix. Solvent-Free. These building elements include frames, staircases, floors, ceilings, cladding, and doors made of wood or wood derivatives. Intumescent paints are used for passive fire protection and suitable for steel, wood, fabric and plaster. ID12896. During a fire it can just take a few minutes for. ) in producing intumescent paints. 50 inches. Intumescent coating delays the collapse of the structure through insulating the structural elements (columns, beams, floors and roofs). Buy. G. Gloss Retention Gloss retention varies with the pigment used. Struggling with that. FREE next day delivery available, free collection in 1 minute. Introduction . Helps to prevent mould and mildew. RECOMMENDED USES Suitable to be applied on steel structures internal or ex ternal. Touch-Dry in 2-4 Hours. Intumescent Paints. Self-adhesive backing for ease of application. This note highlights concerns related to fixing partitioning directly to columns or beams treated with intumescent paint. 99 Inc Vat. Tata Steel Europe The European operations of Tata Steel comprise Europe’s second largest steel producer. In the event of fire the intumescent liner expands rapidly and seals-off the letterbox opening, preventing the spread of fire and smoke whilst maintaining the integrity of the fire door assembly. Intumescent coating, often referred to as intumescent paint, is one of the easiest and most efficient ways to protect load bearing elements of buildings against fire. GLOBAL COMPANY The Jotun Group is one of the world’s leading manufacturers of paints, coatings and powder coatings. 2. . Hempafire Pro 315 Fast Dry is a solvent-borne intumescent coating for steel which provides UP TO 90 minutes fire protection. Fire protective intumescent paints. It’s also essential to meet British safety standard BS 476 when it comes to fire regulations for domestic and commercial buildings. Availability: In Stock. Types Soft char. The aim of this work is to study corrosion behaviour of intumescent coating and the primer on steel substrate before and after a fire test. Matt & Satin finishes. Get advice or a survey for your intumescent paint. Geocel Trade Mate Plumber Flue Silicone Black 310ml (66373) (61) compare. Aithon. Intumescent paint is commonly used to protect steel and other structural materials in buildings from fire. FIS Technical Director Joe Cilia said: “Concerns have centred around the impact of fixing to the steel work and the. QF2 Fire Protection Compound is intended for use as a gap filling material where cables and pipework services penetrate fire compartment floors and walls. 30 & 60 mins Fire Resistance. 90 Mins Fire Resistance. £38. Thermo-Lag® 3000 SP is designed to fireproof steelwork for up to a 4 hour fire rating, depending on the design. Wang et al. Intumescent Paint for Steel. Accommodates Movement of ±25%. Some of its features include: 1. Click & Collect. Intumescent paints are applied on materials to protect them against fire, but the development of novel chemistries has reached some limits. $ 73. Galvacoat® is a specially formulated galvanized steel paint, designed to adhere to non-ferrous metals such as zinc and provide a long-lasting and cost-effective alternative to other metal paints. 2. Paints are applied to steel surfaces by many methods but in all cases this produces a 'wet film'. Off-site Application. VAT: £ 70. Click & Collect. Therefore,. W optimised for & shape steel and hollow bracing. Certain types of primers can cause adhesion problems and should be avoided. How to apply intumescent paint to steel. We can provide solutions for any of your needs to achieve anything from 30 to 120 minutes fire protection. The insulating foam provides. Having a right ball ache removing the intumescent paint on my Rsj. Used to reinstate the fire resistance of flexible and. Buy Intumescent Paint & Sealants & Fire Proof Paint online with Fast Delivery & Expert Advice from International Passive Fire Ltd, Devon, UK. Waterproof. £10. Intumescent paints can also be used for protecting concrete, in which case the thickness necessary for given fire resistance time is calculated with regard to critical temperature of both the steel reinforced bars (between 350 °C and 500 °C) and the concrete cover (the least distance between the surface of embedded reinforcement and the outer.