How can I cover a long crack in the textured ceiling of mobile home
+4
I tried using spackling, which didn't work so sanded that off. Then I tried Flex Shot, which is kind of like caulking. That's what is there now, and it left a raised line.
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Try using a razor blade to trim it level with the ceiling.
Covering it with fiberglass drywall tape and coating it with taping mud might solve your problem. Cracks form because something is moving. What that is could take A lot of detective work.
The fiberglass tape has more stretch than paper tape and may prevent the crack from reforming.
I was going to say the same as Harleyron74
Watch this: https://www.youtube.com/watch?v=ay2cmyet8-4