The thermal effects of a fire on a steel structure results in that the temperature in the material steadily climbing, which reduces steels load bearing capacity, therefore the structural steel has to be insulated. The use of steel in load bearing structures has increased considerably in modern buildings, which has led to an increase in the number of fire insulation systems. To insulate with our expanding fire retardant paint means that the required fire resistance is achieved without affecting the aesthetics of the structure. The intumescent paint Protega Steel 1001 foams into a thick layer when exposed to high temperatures derived from flames or intensive heat radition from fire. The porous layer of foam effectively extinguishes the flow of heat to the treated structure.