Do I have to prime over old paint?

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.
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Do I need to prime before painting over old paint?

You probably don't need a primer. 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.
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Can you just paint over old paint?

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.
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Do I need primer if already painted?

Absolutely. A primer preps the painting surface and seals any stains so that the paint adheres well, and you'll get the smoothest, cleanest finish possible.
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How do you paint over existing wall paint?

How To Repaint A Wall
  1. Step 1: Remove any paint chips or old paint that's bubbled using a scraper and sandpaper.
  2. Step 2: Repair any holes with putty. ...
  3. Step 3: Gently sand over any surfaces you've repaired.
  4. Step 4: Apply primer and allow to dry.
  5. Step 5: Apply two coats of paint.
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Should You Prime Before Painting If Just Changing Colors?



Do I need to undercoat a previously painted wall?

No, in general, you don't need to prime existing paint, but there are exceptions. To prepare for repainting: wash the wall to remove any grease. fill any holes and cracks with suitable filler, possibly using flexible filler for longer cracks.
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Can I paint over old paint on wood?

Never attempt to paint an existing wood surface without preparing its surface. Applying a direct coat of paint over the old coating will not work and eventually will tend to peel, especially if it has a glossy finish. This painting technique needs to prepare the wooden surface first.
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Are primers necessary?

WHAT IS A PRIMER? Primer is often referred to as a base for Foundation or a Foundation primer. They are most commonly used to achieve a controlled matte finish. It isn't necessary to use a Primer before foundation, yet there are many benefits to adding this product into your makeup bag.
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Can you apply primer over painted wood?

Before painting, apply primer to the old wood surface, whether it is indoors or out. Primer helps paint stick and improves the coverage, so you can dramatically change the color of the old wood if you want to. Using alkyd primer also helps the wood last longer because it contains preservative resins.
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Is 10 year old paint still good?

The good news is that if you have an unopened can of paint that has been stored properly, it's almost guaranteed to still be fine to use. Unopened latex and water-based acrylic paints can last up to 10 years and alkyd and oil-based paints can last up to 15 years.
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Can you paint over painted wood without sanding?

Chalk paint is the best way to paint practically anything without sanding. It offers a gorgeous matte finish and no need to prepare the surface. Annie Sloan's Chalk Paint was the cornerstone of the painted furniture industry as we know it.
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Do I need to sand before priming?

Whether you're priming a porous substance such as wood or a smooth substance such as metal, you need to sand the substance beforehand. Sanding a surface removes the top glossy layer, allowing the substance to receive the primer.
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What primer should I use over old paint?

Oil based or shellac primers are best. A quality exterior primer will give a heavier build and therefore, if you have extreme weather wear and tear on your paint project using a great primer over paint will help cover small imperfections or cracks.
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Do you need to undercoat already painted wood?

Paints do not stick well to glossy surfaces, whether already painted or not. Whether it's a wall or woodwork, it should be thoroughly sanded to provide a surface “key”. You may need an undercoat for wood, but there is no need to apply any primer, as the surface is already painted.
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Does primer really make a difference?

A good primer can make all the difference in making your base look smooth and even. If you have texture, large pores, skin discoloration, dry skin, or extremely oily skin, using a smoothing primer can help prepare your skin for the makeup application.
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When should you prime walls?

Always prime your walls before painting if the surface is porous. The surface is porous when it absorbs water, moisture, oil, odors or stains. For example, brand new drywall is a very porous material.
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What can I use if I dont have primer?

Mix a teaspoon or two of moisturizer (depending on how oily your skin is) to a dollop of pure aloe vera gel and apply all over your face as a primer. Aloe vera gel will soothe redness and the moisturizer combination is a great way to maintain a dewy finish without looking oily.
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Can you paint over paint without stripping it?

No, you do not. But you do need to properly prep the surface first. Wiping it down with a clean soapy rag is always advised, and you may want to use a deglosser. I choose to use an oil-based paint instead which will adhere to a varnished surface and is a great way to prep for a final coat of paint.
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Do I need to remove old paint before painting furniture?

If you are painting as opposed to staining, there is no need to strip the finish or sand it down to the bare wood. Simply removing the glossy finish will suffice. If the surface is already dull, you can skip this step.
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How do you prepare painted wood for painting?

Instructions
  1. Cover Your Work Surface. Drape plastic sheeting over the floor or other work surface to protect it from paint spills. ...
  2. Clean the Wood Surfaces. ...
  3. Sand the Flat Areas. ...
  4. Sand the Corners and Details. ...
  5. Clean Off the Dust. ...
  6. Prime the Wood. ...
  7. Apply Primer With a Roller (optional) ...
  8. Sand the Primer.
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Do professional painters wash walls before painting?

Do professional painters wash walls? Yes! For exterior painting, we usually power-wash the surface, or sometimes hand-scrub, to make sure it is free of surface contaminants. Inside, pressure washing is not an option, but in many cases the walls need to be washed prior to paint application.
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What is the difference between undercoat and primer?

Although similar, both serve quite different functions. Primers act as a foundation for your paint to stick to while undercoats create a flat and level base for topcoats. One easy way to remember is if a surface is painted use an undercoat, if it's new, use a primer.
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