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Spot prime them with a good stain kill primer. If you want to smooth it out, fill it with wood putty prior to priming it. Let it dry for about an hour prior to topcoating.

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13y ago

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How should I treat knots in wood before painting to ensure a smooth and even finish?

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Do I need to prime the wood before painting it?

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Do you have to prime wood before painting it?

Yes, it is recommended to prime wood before painting it to ensure better adhesion, durability, and a smoother finish.