Your best bet is to use a good layer of primer to ensure a smooth, consistent base layer for the colored paint. In this case, your primer will mask many of the imperfections you're trying to fix. You will need to use a primer in this case.
In short yes you can paint directly over an already painted wall. Do you need to prime the wall? If you are using a lighter color over a dark color then YES! This will save you from using expensive paint to cover the dark walls.
Yes, you can paint right over old painted furniture without sanding. You will need something called a DEGLOSSER and you can use this on OLD KITCHEN CABINETS to prep for new paint as well!
Generally speaking, no need to add a layer of primer over white walls unless there is some sort of significant staining or blemishes you need to cover up. It would be a waste of time and money.
Painting over bright and dark colors is often difficult due to their high pigment saturation. Colors like red, green, blue, and orange can be particularly stubborn, often bleeding through lighter topcoats if not properly prepared.
As a general rule, lighter colors and shades are the easiest to paint over, whether it's light blue, green, yellow, gray, and so on. These paints don't contain as much pigment as darker ones. So, when painting over a lighter surface, the more saturated darker paint easily conceals whatever lies beneath it.
Generally speaking, single-stage, white paint is the hardest paint you will ever work on.
Without primer, paint will absorb into the surface instead of forming a film on top. This can cause patchy, uneven color that requires even more coats of paint.
How Do I Paint Over Painted Walls? If the wall is in good condition and the paints are chemically the same (both latex, for instance), you have a few options when the new paint is the opposite shade of the old paint. You can use a primer to thoroughly cover the old color, then apply 1 or 2 coats of the new paint.
However, generally speaking, if the first coat you apply is about perfect and there are no visible defects anywhere, then sanding may not be necessary if a second coat is applied right after the first one has dried. But once the first coat has fully cured, a second coat may not adhere as well as one would like.
Liquid sandpaper, a.k.a. deglosser, is a chemical that can be used to rough up existing paint on walls and other surfaces by removing the gloss, making it possible to paint over what's left on the wall after use. This is good for hard to reach places or an object that you may feel would be awkward to sand.
If you have various stains, shellac Bonding primer is the ideal choice. It can be used to cover rough surfaces and old varnish as well as metal and ceramic.
Generally, you will want a minimum of two coats of paint – this is a good rule of thumb for any wall or ceiling you're painting. You'll rarely get a seamless finish from just one coat of paint, and even if you do, coverage isn't the only goal when it comes to painting a room.
Most projects where you're going over a previously-painted surface do not require the use of a primer. In many cases all you'll need to do is spot-prime any bare areas that need to be addressed before applying your finish.
CAUTION: Do NOT use any water-based clear coat over bright whites such as GF Snow White Milk Paint, or GF White Poly as it may cause yellowing. Lighter-colored paints may alter slightly with a topcoat application, but the color shift is less noticeable.
Yes, you certainly can paint over painted walls, but not with just any old paint over any old painted wall. As long as the underlying paint is sound, you can paint over it, but to achieve a professional result, you'll need to know the specific factors that will give you a high-quality paint job.
If you don't remove the paint that is currently on the wall then the finished look of your decorating project won't be professional. More often than not, when painting over layers of old paint, the new top layer of paint will be bumpy.
What might take three or four coats of paint can be accomplished with one coat of primer and maybe two coats of paint. Don't even think about painting wood paneling without a few coats of stain-blocking primer. Without a good primer, it could take upward of six coats of paint to cover the wood grain.
Use It as Base Coat or Primer
“If you use it up, you will probably save yourself from buying more of what you're putting on the walls, and there's no need to bring it to a paint recycling center,” Fresina notes.
Of the two, satin is more durable and is slightly less likely to scuff or mark than eggshell and it's easier to clean when it does get marked. This makes it a better choice, especially for woodwork such as painting skirting boards, than eggshell for high traffic areas like hallways and living rooms.
If the current wall is smooth, clean and covered with the same type of paint (both are oil-based for example), you can head straight for the paint. You need to fill holes, spackle and sand*, maybe even cut a new piece of drywall in to the existing wall.
Red is difficult because many hues simply aren't made for wall space. The rich raspberry red that looks great in nail polish and lipstick will be overpowering in a room. If you get too much brown in your red, it will be dull and lifeless. Covering red paint with a new color can also be a nightmare!
Existing Colors on the Wall
If you're painting over a dark or bold color with white paint, you'll likely need more coats to hide the previous color. The contrast between the dark base and the light topcoat can make it difficult for the white paint to achieve full coverage in just one or two coats.