Fire retardant paint  is a polyurethane based coating, that prevent fire spreading rapidly, as it contributes flame and smoke not to spread. This paint is essential especially when it comes to residential buildings, since containing fire allows people inside the building to have more time to leave it. Buyformula website will teach you the best method for making fire retardant coating with economic raw materials. Formulas are available in PDF format file, that described in technical English language.