Do I need primer before painting?
Short answer
Use primer on bare wood, new drywall, patched areas, stains, glossy or oil-based surfaces, masonry, and when making a big color change. You can usually skip it when repainting a clean, sound, previously painted wall with a similar color.Primer is needed for
- New drywall and skim coats (use a drywall primer so the finish doesn't look blotchy)
- Bare or weathered wood, inside or out
- Water stains, smoke, marker and knots (use a stain-blocking primer)
- Glossy paint and old oil-based paint (use a bonding primer after scuffing)
- Masonry and concrete (use a masonry primer)
- Dramatic color changes
Primer is optional for
Walls in good shape that were painted with latex and are getting a similar color. Here a quality self-priming paint and two coats will do.
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Open Color StudioUpdated September 2026. Always follow the directions on your product's label; manufacturer instructions come first.