Hence, fire, as a home-burning phenomenon, has always affected human society and has caused irreparable material and spiritual damage, so that human beings from ancient times have tried their best to meet the possibilities and conditions to all restrain it side by side. The main task of fire protection coatings is to prevent or, in other words, to delay the development of fire and reduce side and financial losses.A Variety of Fire-proofing paints:1- Solvent-based Expansive Paints (Intumescent paint):These paints are a bulky solvent-based fire protection coating for indoor and outdoor usage and are used to increase fire resistance in the coating of steel beams and columns. In these paints, a solvent is used for dilution. This type of fire-proofing paint is mostly used in open and humid environments. 2- Water-based Expansive Paints (Intumescent paint):3-Cement-based fire-proofing coatings (vermiculite)Solvent-based Expansive Paints (Intumescent paint):These paints are the solvent-based bulky coating that swells as soon as the first flame reaches its surface and makes a solid black foam with a thickness of 2.5 cm. The puffy foam contains millions of small, closed, fire-resistant cells.Foam as insulator delays the flame contact with the substrate and as a delay barrier prevents rapid heating and combustion of the substrate. This insulating foam prevents the heat from reaching the bottom surface for about an hour and delays the spread of the flame. In fact, the materials that are in the environment and can follow the development of fire with the first flame, use and apply fire protection coating on it can turn the burning time of a few seconds into a clock, which in itself in the fire crisis is an unimaginable vital opportunity.The Manner of Applying Fire-proofing Paints:After preparing the surface, in order to apply the fire-proofing coatings on the metal structures, first a suitable primer should be applied on the metal structure and then a fire-proofing coating. This type of coating is easily and instantly applied with various tools (airless paint sprayer, brush and roller) and can be applied on all surfaces with any angle and fracture. Depending on the type and shape of the structure, the thickness of the paint that applied to the thickness of the sheet, environmental conditions of use, extinguishing facilities and other factors can be from and other factors can define from 0.5 mm to 2 mm.If the parts of the surface that are covered by swollen fire-proofing coatings are exposed to impact and need to be repaired, the surface can be repaired easily and even with a brush. The final surface of this type of fireproofing coating is a smooth surface so that there is no need to smooth the surface after finishing the coating operation. In order to protect the swollen fire cover, it is recommended to use a layer of paint suitable for the fire-proofing type.Mineral Spray Coatings (Spray Mortars):Fireproofing coatings with mineral properties are divided into two types of wet (cement-based or plaster-based) and dry. These coatings are more common than paints and boards due to ensuring the correct operation and accuracy of execution. They also have better resistance properties than the other two coatings and can insulate the structure against fire for up to four hours. These materials are applied by spraying method.Dry mixing materials are the materials that are not initially mixed with water, but instead are transported under low pressure air and then sent to the nozzle outlet with water, which is sent separately into the nozzle and are mixed. Wet mixing indicates that the product has already been mixed with water on site before and turned into a smooth mixture and then sprayed on the surface by special spraying equipment under pressure.