What is Intumescent Paint? (Video)

You might even be able to say it but do you know what Intumescent paint actually is?


What does intumescing mean?

It's basically a fancy word for swelling. The paint expands up to 50 times its original thickness to form a carbon layer, or char, that prevents oxygen from reaching the substrate for a given period.

When would you need Intumescent Paint?

Intumescent paint thermally insulates structural materials such as steel, timber and plaster to prevent the premature collapse of a building in the event of a 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.

Intumescent paint on steel

During a fire, unprotected steelwork can lose its load-bearing capacity within minutes. Coating with a suitable reactive paint gives 30, 60, 90 or 120 minutes of protection, depending on the product.

Jotun Steelmaster 600WF Intumescent Paint

We recommend using Jotun Steelmaster 600WF - a water-based acrylic film that offers up to 90 minutes of fire protection. You can use it as a mid-coat or finish coat in low atmospheric environments.

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Jotun Steelmaster 600WF - White

A word of WARNING:

Intumescent paints only provide their stated level of protection and meet building regulation standards when applied correctly and to the correct film thickness. So, make sure you adhere to the manufacturer's drying times and application thickness requirements to prevent the film from failing.

Use a Wet Film Thickness Paint Comb to ensure you are applying the paint to the correct thickness.

If you're not sure which product you need for your paint job, give our Total Paint Shop Support Team a call.

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