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Problem

What grit for aluminum screen door before painting?

Paint can peel from aluminum screen doors when oxidation or gloss remains.

metal paint primer dry sanding
Answer

For an aluminum screen door, clean first, scuff with 220 or 320, then refine with 400.

Why it happens
Aluminum needs cleaning, oxidation removal, and scuff sanding before primer or paint.
Recommended grit
Use 220 or 320 for scuffing, then 400 for smoother visible prep.
Wet or dry
Dry.
Success check
The aluminum is clean, dull, and ready for primer.

What to do

  1. Clean the aluminum screen door.
  2. Remove oxidation or loose coating.
  3. Scuff with 220 or 320.
  4. Refine with 400 before primer or paint.
Avoid: Do not paint over chalky oxidation.

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