You should start with a coarser grain of 60-100 sandpaper and then, on your last pass, sand in the direction of the grain with finer grains, such as 240-320. When to sand furniture · How to sand furniture first. If the finish of the part you are painting is damaged or splinters in any way, always sand it first. If you try to paint over that, your new paint job will start to peel off almost as soon as you paint it there.
The best preparation starts with sanding and sometimes requires scraping. When sanding, the existing surface is scraped so that the paint grips; scraping will remove old bumps or drips. Consider how many layers down there may be lead paint, last sold in the early 1980s; sanding isn't likely to reveal it, but scraping will. You should also take your time repairing holes, caulking holes, and cleaning dust or grease with soap and water to start with a flawless surface.
Sanding before painting the wood will help paint something to hold on to. Therefore, it is a very important step before putting that favorite color on the wood. Sometimes, it is also preferable to re-sand the first coat of paint with 220 grit sandpaper or more to add another coat of paint for a perfect finish. This time I sandpaper it before painting it, but there are about 4 layers of different paint on this thing.
Next, The technical editor of This Old House, Mark Powers, shows how to expertly paint a room in a weekend, from the first scratch on the pole sander to the last pen on the brush. It's much easier to go ahead and lightly sand the surface than to paint without sanding only to find that the paint is peeling off and you have to start over. I didn't like the look, so I sanded %26 and repainted it with Rustoleum 2x Cover latex paint in satin espresso mixed with Behr satin paint in a darker brown. If the part you're painting has rough spots, such as let's say you're painting new wood, then you should sand those stains gently before painting as well.
The primer must also be sanded before the paint enters the wall; for premium work, also sand between layers of paint.