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I have used standard drywall compound to patch little holes in my walls (very small patches- nail/anchor holes) and have sanded them down. My question is should I prime the wall patches or can I just apply the eggshell color to my wallls? I don't want to have the "flashing" effect and have my walls look smooth without it looking "patchy"?

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If the paint has a sheen to it then unprimed patchwork will show up more (internet search the term hold-out factor), especially when lit from an oblique angle or viewed from an angle. If it is flat paint I would not worry about it too much unless perfection is desired (you said "eggshell color" but the term "eggshell" can also be used to describe a "satin" or "semi-gloss" sheen so we don't really know what you have).

An important consideration is that differing textures can also affect the appearance, making the wall look "patchy". So if your patchwork is smooth but the surrounding wall is textured in any way (even just the stippled texture from a paint roller) it will show, especially with glossy paint.

  • thank you, also the eggshell color is a semi gloss, and should I use a drywall primer sealer- such as killz? – kozmo Apr 9 '17 at 23:22
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    Yes you should prime, any primer/sealer for drywall will help. For critical finish situations we repaint the entire wall with rollers after patching to help ensure similar texture; just priming the patches will help but you may still see them (emphasis on you cuz lotsa times I'm the only one who can see my own imperfections). – Jimmy Fix-it Apr 12 '17 at 0:37

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