This post will show you and clearly demonstrate how to properly prepare a previously painted surface for new paint for optimal adhesion.
You hear a lot of no prep - no prime - no sanding ~ this is not what the pro's do!
The professional painting community believe the so-called products that require no prep to your substrate are inaccurate and limiting. These manufacturers do not know what project you are doing, what you're painting, and what look you're trying to achieve. This is one of the reasons why you see only small pieces of furniture or so-called upscaling projects and they all look the same with the same application technique and overall the same look. The only difference might be the colors. And since these products are fairly new to the market it's just a matter of time before this fad ends because eventually these finishes will fail. This is another reason why these finishes are usually a distressed finish. When using "no-prime, no-sand" products with a distressed finish, the failure is not noticed as much. It's easier to hide imperfections with distressing.
For optimum performance you always want to do these basic things to properly prep. If you skip steps it may look okay for a short time, but over time the paint may start separating and not give you the long lasting look you want. Further, the time you have invested in painting and finishing as well as the money you spent to paint the surface may be lost by inaccurate prep and a failed finish.
We highly suggest following these steps to ensure you get the most wear and professional look when applying new paint to a previously painted surface. It's a short time investment to give your projects a longer wear. You are also able to do any finish - smooth or distressed. You are not limited to one finish that covers up blemishes. For an extra 10 minutes of proper prep you are able to get creative and do amazing professional finishes.
The key element to any successful finishing job is the proper preparation of the surface.