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Problem

What grit for sanding a ceiling patch?

A ceiling patch can show ridges or scratches after primer and paint.

drywall patch paint primer dry sanding
Answer

For a ceiling patch, use 150 or 180 to level, then 220 before primer.

Why it happens
Ceiling repairs need feathering with medium-fine grits so the patch blends into the surrounding texture or surface.
Recommended grit
Use 150 or 180 to level joint compound, then 220 before primer.
Wet or dry
Dry.
Success check
The patch edge disappears by touch and is ready for primer.

What to do

  1. Let the patch dry fully.
  2. Level ridges with 150 or 180.
  3. Feather the patch into the surrounding ceiling.
  4. Finish with 220 before primer.
Avoid: Do not over-sand through the paper face.

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