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Trim is primed mdf and contains a lot of pencil marks for measurements. Should I erase the pencil marks before painting over top? Unprimed mdf same question.

Paint is off white latex.

4

Pencil marks will not have much effect on paint adhesion, and will not cause stainiong, but they may show through light-coloured paints.

So yeah either do a test to see if they show through, or just erase them.

1
  • seems like they show through one coat but go away after two coats of white interior semi-gloss trim paint. – Fresh Codemonger Oct 21 '20 at 20:15

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