A knockdown texture on walls or ceilings is a fast, easy way to hide flaws or repairs. For a beginner, it's more forgiving than other textures. It also has a more subtle look than heavy “popcorn” texture.
What are some tips/techniques for applying knockdown texture to drywall? - Home Improvement Stack Exchange
How to Apply a Knockdown Texture on Your Ceiling or Walls
How to Apply a Knockdown Texture on Your Ceiling or Walls | Dengarden
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