Steelmaster 600WF Intumescent Paint has low VOCs and is specially designed as passive fire protection for steel constructions. Fire protective sprays. Fire retardant paint – Fire retardant paint protects a substrate by releasing a flame-damping gas in the presence of heat. £5. And that goes for both emuslion type paints for walls and ceilings and woodwork paints. The phenomenon of intumescence in paints. Paint stripper can be used for this, but keep the timing in mind since it can take 15 to 30 minutes for stripper to take hold. 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. These paints are mainly used for 30, 60, and 90 minutes. 99 Inc Vat. This product has been tested and assessed in accordance with the ASFP fire testing protocol for cellular beam protection. Tenmat’s Team of Research and Development scientists are more than happy to discuss specific customer requirements and to collaborate in order to. Available in White. (couple of images attached) I can only seem to find 10mm wide strips. Excellent all-around performance. 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. The intumescent process by which intumescent coatings react, swell and char can be described by the different stages shown in Fig. Up to 160 mils per coat (dries in 24 hours) - MAX 350 mils per coat if dry time is not a concern. 8-12m²/Ltr Order No Nonsense Intumescent Sealant White 310ml at Screwfix. These include. (reason removing rust spots coming through. As part of job preparation, the substrate surface needs to be readied for the job. This fire retardant acrylic sealant can be used to seal joints and cavities in firewalls, as well as pipe and cable penetrations. The paint works by intumescing or expanding to create an insulation barrier on the steel and increasing the time period to 60, 90 or 120 minutes. It is estimated that smoke inhalation is the cause of 50 – 80% of all fire deaths. is a one component styrene modified oxidatively drying alkyd coating that is heat resistant up to 250°C. Firestop Fire Rated Intumescent Letterbox Polished Silver 306mm x 70mm (367HP) (3) compare. It is suitable for primed or previously painted wood, drywall, cellulose tile, cured plaster, masonry and metal. Intumescent coating delays the collapse of the structure through insulating the structural elements (columns, beams, floors and roofs). Expensive, but like I say, if you are not bothered about the exposed beam it is the quickest option. Rather than providing a thick barrier between the steel and the fire, these paints expand and char in the presence of heat, swelling up to almost 25 times their original thickness. CAP Coatings Intumescent Paint (also known as intumescent coating, fire paint, fire rated paint, fire retardant paint, fire proof paint) expands into an insulating char up to 50mm thick during a fire situation, protecting the. 1,2 The objective is to increase the time for evacuation of humans and animals and for the fire brigade to arrive. Surface Preparation Brosteel Ultra 60 should be applied onto a clean, undamaged, dry and primed steel surface. Self-adhesive backing for ease of application. HENSOTHERM® 910 KS. FREE next day delivery available, free collection in 1 minute. ) I've tried sanding, bladed scraper (works but not getting anywhere fast), heat gun (nothing happened) and poly abrasive wheel with attachment to drill. Intumescent coatings protect steel from getting too hot by swelling and charring in the event of a fire, becoming an insulating layer for the metal substrate. however,in domestic applications rsj are always plasterboarded and usually plastered to meet fire resistance. £32. ES/VFR Clear Varnish Fire Retardant Coating is a decorative base coat. In ambient conditions, intumescent coatings (also known as reactive coatings) are paint-like thin coatings, applied to a Dry Film Thickness (DFT) in the order of few millimetres (thin intumescent. Preparing steel for intumescent paint. is a one component styrene modified oxidatively drying alkyd coating that is heat resistant up to 250°C. . Thermoguard Thermocoat WI is a water-based intumescent paint system providing fire resistance to structural steel and cast iron of up to 90 mins with a minimum number of coats. Fill holes and cracks with ease, suitable for many applications. If you have any questions regarding this process consult our technical department on 0113 2455450 (option 2). Delivery. Our brands . even internal alterations are covered by building regs, even when planning permission is not required. Fire retardant paints and intumescent coatings are vital to ensure the safety and fire resistance of timber and plasterboard surfaces. The char layer formed has very low thermal conductivity, producing an insulating effect which protects the steel from structural damage by slowing the rate at which the fire. 2 Physical modelling of intumescent polymer behaviour in fires. Easy to specify and apply. SteelMaster 600WF is a waterborne intumescent coating and specially formulated to offer 60 minutes sustainable fire protection for structural steel applications without the need for excessive coats. Flame Retardant Paints are available in BS4800 and RAL colours illustrated below. Buy Exterior Paints at Screwfix. 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. Firestop Intumescent Fire & Smoke Door Seals Brown 15mm x 4mm x 2100mm 10 Pack (5979J) (1) compare. Fire Retardant Vermiculite Coating, 20kgs, Grey ₹ 598/ Kg. Jimbo Screwfix Select. Apple Pay accepted in store. Delivery. 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. Commercial premises with flat roof which is a fire escape route. Fire Performance. Stormguard Classic Threshold Draught & Rain Excluder Black 914mm (568TF) compare. Firedamp W3 is a unique, water-based, and intumescent paint designed for steel surfaces. A water-based intumescent coating that consists of a vinyl acetate resin. Picture frame or beaded frame available. Apply in a wide range of temperature and humidity conditions. The thickness of the 'wet film' can be measured, before the solvent evaporates, using a comb-gauge. SC902: The Unique Hybrid Intumescent Paint. This expansion process increases the volume and lowers the. Intumescent paint swells to a char that’s 100 times its original thickness when exposed to heat, creating a layer of. FlameOFF Fire Barrier Paint: FlameOFF Fire Barrier Paint is an intumescent paint for steel, wood, drywall, and other applications. 15 – £ 124. Intumescent materials provide a thermal and physical barrier to the underlying substrate or bulk polymer and thus block the high temperatures and rapid flame spread of fires. Brush or roller. 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. This product that MUST have a protective Top Sealer Coat applied to prevent the product turning milky white. It keeps the heat of steel members from reaching critical levels and aids in the structural. 45 Inc Vat. High mechanical strength during transportation, assembly and use. Low Odour. Steel - Intumescent Paint. 50 inches. As part of job preparation, the substrate surface needs to be readied for the job. Details Add To Cart. W x H x D: 260 x 90 x 7mm. Solvent-based 1-pack intumescent coatings for. PAGE 1 OF 3. The two (2) 0. They come in two sizes: 535x635mm and 535x745mm. 48 Inc Vat. It impedes the spread of fire for up to 4 hours, giving a longer time that allows to save many lives and properties. Universal intumescent lock protection. The Envirograf® range of intumescent coatings can certainly stand the heat. proposed an analytical model for intumescent paint focused on the protection of metal storage tanks for kerosene-based fuels. 1. 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. 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. It is suitable for structural steel to be used internally or externally up to corrosivity category C3 (ISO 12944-2 ). The traffic involved. Melanie Boyden Last Update on 02/08/2022. The range. The products works by expanding when heated to form an insulating char around the substrate being protected. Technical Info: Drying Times: 3 hours at 15°C to touch, 6 hours at 15°C to recoat. Availability: In Stock. PROMAPAINT® intumescent paints from Promat can delay the heating of steel and concrete structures to improve their fire resistance. Door pack is Fire rated FD30/60 and supplied with a 10. Sherwin Williams Firetex FX5090 is a water based TCEP free, thin film intumescent coating providing protection for up to 120 minutes on structural steel. Find code-compliant intumescent paint. 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. Compare $ 149. Lorient . Intumescent coating to provide 60 minutes fire protection to internal structural steel. SP= Standard Pipe. This paint is particularly characterized as being eco-friendly and resistant to the spread of fire on iron and cement surfaces. Intumescent coating is a layer of protective substance which works by chemical reaction generated by heat, resulting in swelling and formation of an insulating layer on the surface, with or without release of water. Most building fires exceed that. Designed specifically for the coating of structural steel, intumescent paint swells when exposed to high heat. is there any coating that can be applied to bring this surface into the new fire regulations giving 30minute resistance to fire please Tel. All have fire check door and frames and have the intumescent door seals inserted into the frame rebates. 99Inc Vat (£17. Browse our full range of 90 Mins Fire Resistance products. For more information on our intumescent paint offering, please don’t hesitate to get in touch with. 99 Inc Vat. Thermoguard Thermocoat WI Steel Intumescent Paint is a water-based intumescent paint system providing fire resistance to structural steel and cast iron of up to 90 mins with a minimum number of coats. Deck coating 14 May 2023 - 08:00. g. Its intended use is for structural steel and can be applied in one coat for up to 4mm dry film thickness. Sheen. Filter By Manufacturer. Hensel. toscana beige limewash interior/exterior paint + View All. 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. Intumescent paints are required when materials in your building (e. Filter By Manufacturer. £49. For internal use only; Water-based - quick drying thin-film intumescent coating Even 150 x 75 seems small. . Therefore, an intumescent. JohnnnyBoy (Structural) 14 Jan 20 11:54. com. Steelmaster 1200WF From £159. 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. £21. HW02/N is a single pack water-based intumescent varnish that is designed to be used to upgrade timber cladding and timber substrates to up to 30 or 60 minutes protection. com. New interior concealed structural steel, water-based intumescent. For more informations. While the terms fire-retardant paint and intumescent paint are sometimes used interchangeably, they refer to slightly different. Waterproof & Water-Repellent. ASTM E 119 106 NFPA 251-101 07 2hr Column Heavy Steel 1-2hr Beam- Heavy SteelFitting intumescent strips to fire doors. 98. Corrosion protection requirements up to C3 without primer & up to C5 with TEKNOPLAST PRIMER 5. Not available for delivery. 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. How do intumescent painting systems work? An intumescent coating chars, foams and expands when heated. The products works by expanding when heated to form an insulating char around the substrate being protected. Click & Collect. Paint it with intumescent paint to fireproof the steel beams 2. 44 (excl VAT) £25. Suitable for Fire Doors. Universal intumescent lock protection to suit British standard sashlocks. 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. Use any point on the blue line or within the green area to determine the appropriate DFT for this and larger-sized steel members. Provide protection from the elements with a range of door thresholds. Aluminium Construction. €17. In addition to that, 100 × 100 × 3 mm 3 steel plates (grade XC40, Couzon Aciers Service,. Thanks for the advice, but one of the issues I have is that I am required to paint my cornicing with this stuff. In ambient conditions the thin coating allows for the steel structures to maintain their usual form rather than being. The layer of char insulates the substrate from the brunt of the heat and can protect it from the fire for up to 2 hours. A compatible decorative overcoat system ensures the system will enhance the building’s architectural and design features. In this work, a new eco-friendly biomass-based intumescent coating, composed of natural and sustainable biomass humic acid (HA), ammonium polyphosphate (APP), melamine (MEL), and zinc borate (ZB), was developed to endow steel structures. £24. You may have heard of the term “intumescent coating” but may not be familiar with what it really means. Delivery. com Jotun Steelmaster 600WF Intumescent FireProof Paint For Steel Beams & Columns (5 Litre) 4. ) need to meet ASTM E-119 standards. Order online at Screwfix. There are several methods that can be used to fireproof steel beams and structural steel. Can be quite expensive — up to $4-12 per square foot. 05 – £ 143. Jotun Steelmaster 600WF Intumescent Paint is a one component waterborne acrylic thin film heat resistant coating. It expands slightly on curing (0. Rockwool Firepro SpeedSeal is a red putty-based penetration sealing solution available in 60mm and 100mm diameter discs. Intumescent paint costs $4 to $12 per square foot. Critical temperature can vary based on the building design. This happens because it produces carbonaceous char, formed from a large number of bubbles. Therefore, an intumescent. Califórnia, 1974. 60 Mins Fire Resistance. 5 standard to then allow a new tested. These bubbles then act as an insulating layer to the steel. Ideal for communal areas. Find the perfect letter box with a variety of styles and finishes to choose from. Intumescent Paint is designed primarily for Off-Site application in a controlled paint shop environment. Fire Performance. 2. If you would like information on current lead times, please call us on 01752 690997. 8/5. The seals should be rebated into either the door frame or the door itself. 1. 1. organic amine or amide, as a flow-PPG SteelGuard 751. Provide clear information to keep the workforce and visitors safe in case of an emergency. Geocel Trade Mate Plumber Flue Silicone Black 310ml (66373) (61) compare. 73 (incl VAT) Intumescent coating for steel and other metals offering up to and including 90 minutes of fire protection. G. It’s also essential to meet British safety standard BS 476 when it comes to fire regulations for domestic and commercial buildings. Find out how intumescent paints and varnishes provide fire resistance to steel, wood and timber, using products from Bollom. Fits Frames for External Doors. Step one. Excellent all-around performance. This coating can provide up to 90 minutes fire protection. They are designed to expand when exposed to extreme temperatures, filling in any gaps that smoke or fire could penetrate. Can be used as primer, mid coat or finish coat in atmospheric environments. Our exclusive intumescent developed technology plays an integral role in a. Thermoguard Timbercoat expands to create a barrier to insulate wood from heat and oxygen to prevent wood burning & fire penetration. A compatible decorative overcoat system ensures the system will enhance the building’s architectural and design features. Click & Collect. Cafco SPRAYFILM® WB3. Intumescent Cons. 44 +VAT. Pay your way. It’s ASTM E-119 and ASTM E-84 compliant. Buy Sealants & Adhesives at Screwfix. In fact, it can swell to 50 times the original thickness of the paint. Rust-Oleum 769/780 Damp-Proof Rust Primer is a single pack rust primer for direct application on slightly moist or dry metal surfaces. There is no temperature ceiling for applying intumescent paint. Let’s survey the advantages and disadvantages of each coating. Intumescent paints can be water-based, solvent-based, or even consist of multiple-component materials like epoxies. We can provide solutions for any of your needs to achieve anything from 30 to 120 minutes fire protection. Intumescent paints are used for passive fire protection and suitable for steel, wood, fabric and plaster. 2kg Max. Suitable for structural steel exposed to internal environments up to corrosivity. The following systems are commonly applied: Box protection of fire protective boards. 33 +VAT. As a. Search ID JOT2904. What is an intumescentFor External Use. Intumescent Paints. 95 Applying intumescent paint to wood. 029 2085 7959. It’s ASTM E-119 and ASTM E-84 compliant. 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 to. It can be used as an exterior aluminium finish usually within an alkyd system. Welcome to Rawlins Paints, the go to supplier for industrial and specialist paints from brands including Rust-Oleum, Jotun, Watco, Zeroflame, Thermoguard and Sika, offering one of the widest ranges of industry specialist paints and coatings available. Ideal for hollow sections and lightweight steel subject to rapid heat up in cellulosic fires. Order Firestop Intumescent Fire & Smoke Seals White 15mm x 4mm x 1050mm 5 Pack at Screwfix. 99 Inc Vat Click & Collect Not available for delivery Hammerite Smooth Smooth Metal Paint White 750ml (69444) (150) compare £19. Intumescent paints are applied to steel in thin layers and are inert at the normal operating temperature of a building. Intumescent paint is an extremely useful tool when it comes to passive fire protection in buildings. Withstands temperatures of up to 120°C and prevents the spread of fire, smoke and toxic gases. 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. Simpkin offer structural steel Intumescent painting serives across the uk. Fits Cut-Out Holes 50-100mm. Anti Graffiti Coating Ottawa & Toronto Area 16 May 2023 - 04:39. So letterboxes are a no-no. Most building fires exceed that. Both type of Intumescent paint are rated 'Class O' to BS476 Part 6 & 7:1970 compliance with the performance requirements of Building Regulation. 40 W/D (blue dot). Get building. 24K views 5 years ago. When exposed to extreme temperatures (exceeding 120°C), these. SKU. Rust-Oleum CombiColor has excellent opacity (hiding power) and sag resistance, leaving no brush or roller strokes,. This swelling creates a layer of foam that insulates the underlying material from the heat, protecting it from damage or destruction. Intumescent paint finishing can be used as an aesthetic feature of the design whilst providing a competitive solution to meet with stringent fire protection requirements. Load. Intumescent Pros. This document serves to give an overview of the considerations for. It has a low odour and is a water-based formulation that may be considered safer for. In cases where a compartment wall is built on the under-side of a steel beam, the wall should continue past the beams to the. Details Add To Cart. Apply the primer using your painting equipment – ensuring that this coat adheres to coverage requirements. 30 & 60 mins Fire Resistance. Available in virtually any colour - RAL, BC & NCS. 3-4mm Gap Required. Flat, flameproof paint for raw wood, closed cell EPS Foam and other surfaces. Firefree 88 is a premier fire-resistant coating that provides a practical and cost-effective solution. With fire protection/intumescent paint systems, we can slow down the heating process of steel. Fire resistant paint releases a flame dampening gas as a response to intense heat. Load More. 48/Ltr) Add to basket for. Intumescent paint costs $4 to $12 per square foot. During a fire it can just take a few minutes for. com. Both type of Intumescent paint are tested to BS476 Part 21:1987 on structural steel beams & columns for up to 2hours fire resistance. Buy Letter Boxes at Screwfix. It doesn’t extinguish a fire the way sprinklers can. Fits Frames for External Doors. Filter . 60 Mins Fire Resistance. Its nominal tensile strength and load-bearing capacity begin to rapidly deteriorate as the temperature. This intumescent fire resistant coating is designed for interior spaces, where spray polyurethane foam insulation is installed. For the application of our Teclack-W Paint by means of an Airless Gun, we recommend a nozzle between 0. Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed. The templates shown below were supplied by manufacturers for the purposes of specifying their intumescent paint coating products for various FRLs and corrosivity ratings. FSi . Intumescent paints are applied on materials to protect them against fire, but the development of novel chemistries has reached some limits. 00. 75”x8”x32” steel plate is adjacent to the HSS column. Provides up to 120 minutes protection from cellulosic fires. We can guide you when you are applying the intumescent paint to ensure the process is smooth and easy. Not available for delivery Click & Collect Check stock in your local store Add to saved list… Order No Nonsense Heat-Resistant Spray Paint Black Black Finish 400ml at Screwfix. With top coats, base coats and acrylics and matts available in a wide variety of colours, you can achieve the aesthetic appeal you are looking for at the same time as increasing the level of protection in the event of a fire. Some of its features include: 1. $ 73. 90 Mins Fire Resistance. 5”x6”x12” steel plate stiffeners are welded on the HSS column and the 2. ) I've tried sanding, bladed scraper (works but not. Intumescent Fire & Smoke Seals. 48 and 0. Jotun Steelmaster 60SB is a one component solvent based acrylic thin film intumescent coating indepe. Order No Nonsense Intumescent Sealant White 310ml at Screwfix. £2. Intumescent pipe wraps will expand and crush plastic pipes when attacked by fire, filling the space inside to block fire moving through the pipe. This durable mastic is used on pipe racks, vessel and tower skirts, tank legs and the structural steel (including galvanized) of the facility. Applies like a regular paint Dilutable with Rust-Oleum 7301 CombiColor Thinner. Intumescent or fire door strips are fitted around door frames to prevent fires from spreading. Gloss Retention Gloss retention varies with the pigment used. 49. 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. What size and type of intumescent strip is best? Typically, the below sizes are most common for intumescent strips: 10mm x 4mmScrews. TELEPHONE:. 20 / l ) Search ID FOS7863. 48 Inc Vat. Something to bear in mind is intumescent paint foams up when exposed to fire. Thermoguard Thermocoat WI Steel Intumescent Paint. This note highlights concerns related to fixing partitioning directly to columns or beams treated with intumescent paint. Applying intumescent paint to wood. Fire Rated to 30 & 60mins. Firestop Intumescent Fire & Smoke Door Seals Brown 15mm x 4mm x 2100mm 10 Pack (5979J) (1) compare. 99 ( £ 19 . Been asked to regloss some new build flats. They are easy to fix as they come in two L-shaped sections backed in double-sided tape. such as steel. A water-based material might be selected for a smoother finish, while a solvent-based material would be better suited for speed of application or weather resistance during application. The exposed sides of the steel plates are protected with 0. 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. (reason removing rust spots coming through. This expansion creates a layer of insulating foam that protects the underlying substrate from the heat of the fire. Showing 24 of 10,200 products. 2 component system. ES/VFR Clear Varnish Fire Retardant Coating is a decorative base coat. Can be quite expensive — up to $4-12 per square foot. Carlisle Brass Treviri Lever Fire Door Pack Sss - Satin Stainless Steel. This insulating layer limits the amount of heat. 10 Ubi Crescent, #06-99. Fire Retardant Paints For Steel, For Metal ₹ 990/ Kg. During exposure to a fire,. £13. They are around £35-£50 per 5L (white). Fire-resistant paints are usually ASTM E-119 tested and certified. Intumescent paint not only protects but also enhances the useful life of critical structures for years to come. In civil construction, intumescent coatings are widely used in steel structures, because in a fire, this material loses approximately half of its elastic modulus at 500°C. The recommended use for this read more ». Complies with LU Standard 1-085 ‘Fire Safety Performance of Materials’. Now for all bizarre, wierd and outlandish requirements I turn to a. Order online at Screwfix. The following systems are commonly applied: Box protection of fire protective boards. Aithon. Provide protection from the elements with a range of door thresholds. 53 +VAT. Here are some of the ways in which it’s utilised. Click & Collect. Click & Collect. PAGE 1 OF 2. com. However, coating burns and burns, and is not going to let the flames advance over to another beam or wall. £10. Recently, the concept of “Polymer Metal Laminates,” consisting of alternating thin aluminum foils and thin epoxy resin layers has been proven efficient against fire, due to the delamination between layers. 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. Suitable. 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. Suitable for. 42 - £96. Weather-Resistant. Non Slip Coatings and Anti Slip GRP Products. View Product. Buy Thresholds at Screwfix. Intumescent paint coating specification templates. It should be applied in a thick layer almost like cream cheese. Intumescent coatings can be applied to a wide range of surfaces, including steel, concrete, and wood. 75. This durable mastic is used on pipe racks, vessel and tower skirts, tank legs and the structural steel (including galvanized) of the facility. The steel design purpose (load vs. It impedes the spread of fire for up to 4 hours, giving a longer time that allows to save many lives and properties. Water-based intumescent coating for interior steelwork. Low Odour. They are designed to swell once the ambient temperature exceeds 200°C, which will usually occur within the first 10-20 minutes of a fire. Allow to dry between coats. Thermo-Lag® 3000 SP is designed to fireproof steelwork for up to a 4 hour fire rating, depending on the design.