If the crack is discolored you could have moisture problems.
Repairing drywall ceiling seam cracks.
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The back to front dimension is 30 which means there are over 7 sheets of drywall.
The cause of your ceiling crack depends on various factors such as the ceiling material and the home s age.
To undo the damage done to the ceiling scrape off the loose tape and re tape the joint either with a drywall repair kit or paper tape and joint compound.
If you have a textured ceiling.
We have a crack at the long edge seam of the drywall in the ceiling.
I installed the drywall in 2007 and the crack first appeared about 4 years ago.
If there s an issue with the trusses that could create a crack between the ceiling and the interior wall.
To fix a ceiling crack start by scraping away any loose material from the crack with a drywall knife.
Next put mesh drywall tape over the crack and press it firmly onto the ceiling.