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Should I sand the existing paint on my drywall before a re-paint? If yes, what sanding paper grit should I use? Thank you!

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  • Are you asking if you should sand the paint on the wall before re-painting?
    – RMDman
    Aug 4, 2023 at 18:45
  • Yes. Sanding the paint.
    – LHA
    Aug 4, 2023 at 18:47
  • diy.stackexchange.com/a/88741/23295
    – Mazura
    Aug 5, 2023 at 19:35
  • We don't sand paint unless you ask us to but we will gladly charge you more money for an unnecessary step. Sponge mop and TSP.
    – Mazura
    Aug 5, 2023 at 19:50

2 Answers 2

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The answer depends on what the finish is that the current paint has. It also assumes that the new paint is compatible to the purpose. ( you are not using automotive paint on a wall of your home. Forgive me if I am too assumptive. People will do very odd things.)

If the current finish has a sheen that is flat, eggshell, or matt finish then no sanding is needed.

If the finish is gloss or perhaps even semi-gloss then a light scuff may be in order. For those type of finishes I just use a scuffing pad . I use fine or very fine. Then wipe the wall down with a damp towel.

You are then ready to paint.

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Sanding (roughing the surface) never harms and it always helps.

The new paint adhesion will be better, and all the handprints (fat) will be removed.

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