Fireproof paint for steel structures: why it is needed and how it works

Steel looks indestructible — but fire has its own opinion. Already at 500 °C the metal loses about half of its strength, and at 700–800 °C a load-bearing column or beam begins to «flow» and collapse under its own weight. A fire rarely lasts for hours: sometimes 10–15 minutes are enough for a building frame to fold. It is exactly these minutes that fireproof paint «buys» — the time people need to get out and firefighters need to arrive and start extinguishing.

How it works

Fireproof paint belongs to intumescent coatings. In its normal state it is a thin layer, a fraction of a millimetre — a neat coating that barely changes the look of the structure. But as soon as the temperature rises, the paint gets to work: it foams up, expanding dozens of times in volume, and turns into a porous heat-insulating layer — a char foam. This «shield» cuts the heat off from the metal and slows down its heating. As a result the structure holds the load longer, and fire resistance rises to the required limit — R45, R60, R90 and above.

Where it is used

First of all on load-bearing steel structures: columns, beams, trusses, bracing. These are the frames of warehouses and hangars, shopping centres, production workshops, car parks, sports and public buildings. Wherever steel carries the building and people’s lives, fire protection turns from an optional «extra» into a code requirement. More details on the page «Fireproof paints in Tashkent and Uzbekistan».

What if you cut corners or skip it

This is where the truly unpleasant part begins. Unprotected metal loses its load-bearing capacity rapidly in a fire — and collapse may happen before evacuation is complete. Low-quality or counterfeit paint is even more treacherous: outwardly it is no different from a normal one, but in a real fire it foams weakly, peels off or simply burns away, failing to provide the declared limit. The owner pays twice — first for the «cheap» paint, then for redoing the work, and in the worst case the price is measured in entirely different terms. Add acceptance: if the coating thickness and certificates do not match the design, the facility simply will not be commissioned.

What is important to remember

Fire protection is not a «tick-the-box» line in the estimate, but an engineering system. Three things matter: a correctly chosen composition for the required fire-resistance limit, an accurately calculated thickness based on the section factor of the metal, and careful application according to technology. Done right — and you can safely forget about protection for years. Done «by eye» — and you will learn about the problem at the worst possible moment.

STATERM supplies and applies certified fireproof paints (for example, TERM-001) across Uzbekistan, matching the system to the specific facility and to the requirements of ShNK 2.01.02-04 and SNiP 21-01-97. Send us the drawings or the steel schedule — we will calculate the material, thickness and cost. Tel. +998 90 918 81 88.