It is known that the basis of successful painting is priming. The PRIMER is a kind of foundation on which all subsequent layers of paint and varnish coating, both factory and repair, are built. Most mistakes made by masters at the priming stage are related not so much to the lack of painting skills (they come very quickly), but to a lack of knowledge about the properties of different FILLER, with insufficient awareness of the correct methods of working with a product. You want it or not, and the complexity of the modern system of repair FILLERS is affected. Indeed, every PRIMERS manufacturer of repair materials today offers a wide range of PRIMERS. Let's try to understand this variety and answer the question: should you always use a primer, and if so, which one to choose in each case.