I’ve noticed this defect in a few places where drywall wall meets ceiling. I don’t have crown mounding to cover it up. enter image description here

enter image description here Does anyone know what causes it?

  • I really can't see much deviation from ideal. Jul 6, 2021 at 2:50
  • 3
    Are 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. Jul 6, 2021 at 4:32
  • If just don't look at it does not help, try adding pictures or something to the wall away from it.
    – crip659
    Jul 6, 2021 at 12:03
  • I’m fine leaving it as is, just wanted to make sure it wasn’t a sign of water damage etc..
    – FooAnon
    Jul 6, 2021 at 12:11

1 Answer 1


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.

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