I’ve noticed this defect in a few places where drywall wall meets ceiling. I don’t have crown mounding to cover it up.
Does anyone know what causes it?
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I really can't see much deviation from ideal.– Jim StewartJul 6 at 2:50
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3Are we talking about a little pucker on the wall? The tape was probably starved of mud and lifted on subsequent coats. Not a big deal. It might be easier said than done, but just don't look at it and it'll go away.– Aloysius DefenestrateJul 6 at 4:32
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If just don't look at it does not help, try adding pictures or something to the wall away from it.– crip659Jul 6 at 12:03
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I’m fine leaving it as is, just wanted to make sure it wasn’t a sign of water damage etc..– FooAnonJul 6 at 12:11
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That's the paper used when it was taped. I usually cut them out, sand, and use spackling when refilling the gaps. Then you can texture to your heart's content.
If you are worried that it's a water leak, poke it with a thumbtack and see what you get. I doubt that it is a leak, as it'd keep bulging and start leaking "somewhere," as well as cause the sheetrock to swell over time.