what is paint primer used for

Paint primer is a base coat that creates the foundation for a flawless paint job. It offers several benefits, including covering imperfections, blocking and concealing stains, providing a uniform surface for paint to stick to, creating a smooth and seamless paint application, and neutralizing the color of the surface so that the true color of the paint shines through. Using a primer can reduce the number of coats needed for proper color coverage and extend the life of the paint job. It is recommended to use a primer before applying two coats of paint for a professional-quality finish. Primer is particularly useful when covering imperfections, concealing stains, neutralizing the color of the surface, or when switching from a higher sheen to a lower sheen finish. It is also important when painting over a dark shade to prevent the darker shade from showing through.