Related reading: Learn about how to wet sand drywall and how long drywall mud takes to dry.
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Primer Coats Quick Reference
| Situation | Coats Needed | Primer Type |
|---|---|---|
| New drywall installation | 1 coat | PVA drywall primer |
| New drywall + dark paint color | 2 coats | PVA drywall primer |
| Drywall patch or repair | 1–2 coats | PVA or shellac spot primer |
| Water-stained drywall | 1 coat | Shellac-based primer (stain block) |
| Repainting previously painted walls | 0–1 | Standard wall primer |
Related Drywall Guides
- How to Wet Sand Drywall — The step before priming patches
- How to Patch a Hole in Drywall — Full repair guide including priming
- How Long Does Drywall Mud Take to Dry — Dry times before sanding and priming
