Do I Need Paint Primer for Best Results?
By Darren McClurg, CMI ·


What is Paint Primer & Do I Need It for Best Results?
You likely need a paint primer for projects involving new drywall, drastic colour changes (dark to light), painting over glossy or slick surfaces, covering stains, or painting on bare wood, metal, or other porous materials. While “paint and primer in one” products exist, traditional primer provides superior coverage, adhesion, and stain-blocking, leading to a more professional & durable finish.
This video explains why priming is important before painting:
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New Drywall or Patches:
Bare drywall & drywall patches are porous and absorb paint unevenly, leading to “flashing” (visible differences in sheen). Primer creates a uniform surface for consistent paint adhesion and appearance.
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Dark to Light Colours:
A primer creates a neutral, consistent canvas, making it easier for a lighter paint colour to cover a darker one & achieve true colour, saving you from multiple coats of expensive topcoat.
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Glossy, Slick, or Shiny Surfaces:
Paint struggles to adhere to high-gloss or slick surfaces. A primer creates a “grippy” surface for the new paint to hold onto, preventing chipping & peeling.
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Stains and Odours:
Primer is crucial for sealing in & covering stains from water, smoke, or markers, preventing them from bleeding through to the final paint.
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Porous Surfaces:
Bare wood, masonry, plaster, and metal are all porous & need a primer to prevent them from absorbing paint unevenly.
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Repairs:
After wall repairs or patching, priming ensures the patched areas blend seamlessly with the rest of the wall, avoiding a dull spot in the finish.

When You Might Be Able to Skip Primer:
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Small Color Change:
If you are painting a similar colour or a lighter colour over a very light surface, you may not need a primer.
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Paint and Primer in One:
High-quality paint-&-primer-in-one products can work well for simpler projects, like painting over a similar colour on a well-maintained surface.
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Excellent Condition:
If your walls are in excellent shape & do not have stains or issues, you might be able to skip primer.
The Bottom Line
When in doubt, it is best to use a primer. It is a worthwhile investment that provides a smoother, more even finish, improves adhesion & ensures a more professional and long-lasting result for your painting project.
When it comes to painting rooms in your home, you want the process to be as fast and easy as possible, which is why a lot of people tend to skip primer. Paint primer is actually one of the most important steps in getting a professional-looking job with less time and effort. I’ll break down what paint primer is, what’s it’s for, when you want to use it and when it’s okay to skip it.
What is Paint Primer, Anyway?
Paint primer is just what it sounds like—it’s a white-coloured base coat that you apply first, before you start in with your expensive latex paint. It “primes” the surface you’re painting, so you get better adherence & coverage in fewer coats. Even though it adds an extra step, paint primer is a great time-saver in most instances & actually makes your paint job more durable, long-lasting and less likely to chip.
When You Should Use Paint Primer
There are some jobs where paint primer can be optional, but most of the time it’s a good idea. Before you break out the brushes & rollers, see if your job is on this list.
When It’s Okay to Skip Paint Primer
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