If the current wall is smooth, clean and covered with the same type of paint (both are oil-based, for example), you can go straight to get the paint. You need to fill holes, putty and sand*, maybe even cut a new piece of drywall on the existing wall. You can use a primer to completely cover the old color and then apply 1 or 2 coats of new paint. You can paint over an existing paint, as long as you prepare the wall and make sure you're working with a clean, smooth surface.
To start the project, tape the areas you don't want to paint, such as moldings, accessories, and windows. Apply the paint with a high-quality roller and allow it to dry. It's usually best to apply a second coat for best results. Always start a new paint job on a surface that is as clean as possible.
Use a slightly damp cloth to wipe off dirt, dust, or grease, as build-up on the wall can cause new paint to crack and peel off. If the existing wall or paint is rough or slightly damaged, consider sanding it lightly. While you can escape without using a primer, especially if you use a color that is only a few tones away, priming is always a good idea. Not only will it ensure that your new color is vibrant and seamless, but it will also cover any other discoloration.
Using a primer is absolutely necessary if you are planning to make a dramatic color change. I recommend using an oil-based primer for particularly discolored or defective walls. One coat of primer should do the trick, but if you're trying to cover a dark color, you might need two. Before painting your new drywall, you must apply a pre-coat to prepare the surface and help the paint adhere properly.
For a more accurate color representation, view a color sample or paint color sample in the space you want to paint. This painting tips article will look at some common situations and provide simple solutions to help you paint your walls, even if they were previously painted in a dark color. Simply painting over existing paint without cleaning or priming it causes problems that can be costly and frustrating. If your wall is in good condition, but you want a new color, you can paint over existing paint to quickly update your room.
For many people, the easiest solution is to apply a flat coat of latex paint and allow it to dry completely before adding the paint to get its final finish. When you paint on a surface that has had to be repaired or is very dirty (rub it first), color both the paint and the primer the same color. Your floor will stay secure under a professional protective cloth, which also prevents paint from spreading throughout the house. If the wall is in good condition and the paints are chemically the same (both latex, for example), you have a few options when the new paint has the opposite shade of the old paint.
In some cases, you can paint over existing drywall without the benefit of a primer if the drywall is already painted. Oil-based paint will not adhere to the existing latex paint layer, so you need to create a kind of intermediary. This simple tool will help you calculate how much paint you'll need for a room for your painting project. Paint %26 in one primer paints are a newer option, which could be ideal for your situation and even shorten your project.
If you want to make sure that the paint adheres properly, prepare the surface first to avoid costly mistakes when painting.