If you're painting over a dark color with another dark color, you can typically get away with using primer-containing paint. This is especially true if you're using a color that's darker than the original. Painting over old paint with priming is not as effective as a two-step technique. For example, if there is still visible lightness under the new paint, it will not be fully cured when you apply the second coat.
Paint should never be applied over an existing coating without first being completely dry. This is because wet paint cannot be rewetted; instead, it will crack and flake when exposed to sunlight or heat.
Dark colors are easier to paint because there are less problems with light reflection, so you don't need as many layers of paint. However, even for darker colors you should always use a primer first, then your main color, then a final topcoat.
Painting over old paint is not recommended because it creates a rough surface that is difficult to clean. If you want a truly matte finish, use mineral spirits on a regular basis.
Use a white primer when painting over dark walls with light colors. Using a primer can assist to guarantee that your color is accurate when dry, with no dark base color muting a light one or a light base color making dramatic color coverage impossible.
Applying two coats of a high-quality primer and sealer to dark-colored walls aids in the sealing of porous areas. If dark walls are not properly sealed, light paint might give an uneven tint with glimpses of the dark color coming through. Additionally, tint your primer a gray tone or any color that is comparable to the color of your final paint. This will help the primer blend in better with the wall.
Dark colors such as black, brown, and red can be difficult to paint because they can stain or absorb too much paint. Dark colors also contain more pigment per square inch than lighter colors, so less paint is needed for coverage. When painting dark walls, use low-vapor content paints and apply only one coat unless otherwise specified by your painter. Multiple coats may not yield satisfactory results because once you brush off one coat, it's hard to get another without removing some of the first layer.
It is recommended that if you do choose to paint dark walls, do so with caution and work into the texture of the paint to avoid leaving brush strokes which could show up later. Also, make sure to mix your own color rather than buying a premixed paint since these tend to be darker than what you see on the label.
On dark walls that you want to paint with a neutral hue such as beige, ivory, or a light eggshell, use a nice white primer. Prepare to apply a second coat of primer and, if required, a third coat to particularly dark walls such as black, dark blue, dark green, and so on. Dark colors require more paint than other hues; therefore, more coverage is better.
If you're not sure how much paint to buy, choose a color that's close to the one on your wall. If it's too dark, add more paint; if it's too light, take out some of the color with a tinted brush or sanding sponge. It's best to hire a painter for this job.
When painting the ceiling, use a large-size flat surface and work from the top down. Use caution not to get any paint on the lights above your bed or it will come off in your hands when you turn them on.
Dark colors can look dull and lifeless without adequate lighting so install lamps or sconces where necessary. This will give your room depth and life and help set the right mood.
Finally, make sure you have good ventilation while you work. You don't want noxious fumes filling the air.
These are just some of the many things you should consider before you paint your home.