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Intumescent steel paints and coatings are available in water and solvent based forms, providing protection to most structural steel sizes. The paints can achieve 30, 60, 90 and 120 minutes fire protection if applied in the correct quantities, utilising thick and thin film intumescent coating technology. We can also supply non-reactive fire protection up to 4 hours using cementitious sprays or boarding systems.
Intumescent steel paints are what we refer to as “Reactive Paints”. When the paint is subjected to heat it will react. In the case of an intumescent paint when subjected to temperatures exceeding 120°C the paint will intumesce (Swell up to 50 times the thickness of the paint) and form an carbon layer (Char) which thermally insulates the steel substrate and maintain a temperature below 550°C or 620°C for a given period of time (30, 60, 90 or 120 minutes). In a fire it is critical that the structural steel frame of the building is protected correctly so that the steels do not reach their critical failure temperature (Temperatures between 550°C and 620°C). Fire rated paint for structural steel achieves this.
Below this critical temperature the structural steel exists in a state of “Elasticity”, this allows the steel to bend/deflect and return to its original state once the force has been removed. If the temperature increases above the critical temperatures the structural steel under load goes into a state called “Plastic” which means the steel will buckle and bend potentially causing the building to collapse.
In Summary, Intumescent steel paint thermally insulates structural steel in a fire, stopping premature collapse of the building.
For details regarding our fire rated paints’ finishes, listings, approvals and compliance, please get in touch, or contact our free estimating department on 0800 0277 955
All of our products that we sell are fire tested to British and or European standards, Intumescent paint for steel use the following standards:
– European Union: EN 13381-8
– United Kingdom: BS 476-20/21
Fire protection paints are the most common form of fire protection to steel, this is because of how widely available and cheap the products are. At International Passive Fire we have a whole department set up to deal with Specifications and Estimations for Intumescent Steel Paint. Our technical specification and estimating department consists of over 50 years of experience in the structural passive fire protection field and is completely independent of all manufacturers. Also, all of our work is free of charge (FOA).
We aim to give all customers whether big or small the same high value service and back up to ensure that all jobs are completed and certified on time. We can help you when applying intumescent paint to steelwork to ensure the process is smooth and easy and to guarantee that the paint will give the correct fire protection required.
At International Passive Fire Ltd. we offer a DFT survey for all completed work along with a report details DFT loads and fire resistance of the steel. If this service is of interest please contact us on 01752 690997 for more details.
Application of Intumescent steel paints is very easy. You can apply the paint using a brush roller or spray machine. Typically brush application is up to 500 microns per coat and spray is 1000 microns per coat. It is important that drying times are adhered to before application of the second or third coat to ensure the paint will protect the steel.
During application a Wet Film Gauge is used to measure the thickness of each coat of paint. Please request these gauges if you require them.
The topcoat of an intumescent paint system is solely used to protect the intumescent coating from the environment that it is in or as a decorative finish coat that can be coloured to most RAL or BS colour codes upon request. The finish of these top coats is usually SATIN or GLOSS however we have several products that finish in MATT. Not all jobs jobs require a topcoat, however if the steel is external or internal in a high moisture environment, then YES you will need a topcoat.
For more information on topcoats, click here and/or contact us on 01752 690997
Before buying any intumescent paint for steel you must make sure that a full specification has been undertaken listing all structural steel that need to be protected.
With over 50 years of experience in the passive fire protection industry, International Passive Fire Ltd provides independent estimating services for intumescent coatings, epoxy intumescent and boarding systems for structural steel.
Call our technical department on 01752 690997 to discuss our free estimating and specification services.
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