If no water or structural damage in the ceiling and ceiling drywall is tight, then likely a joist lifting or shrinkage crack. Try caulking crack with PAINTABLE latex modified silicone caulk, using a very small cut on the tip to control the flow to just enough to fill the crack, then paint and see if it happens again. Fixing a drywall crack at the wall/ceiling joint will improve the looks as well as the structural soundness of your room. Drywall is a construction panel made from gypsum plaster. A crack is continuous though the wall and ceiling Ceiling cracks that run across the ceiling to the wall and then downward on the wall; basically a continuous crack going through the ceiling and the wall. This type of crack suggest that there may be a structural issue, i.e. A foundation issue or framing issue. Cracks in the ceiling can be cosmetic or indicative of a serious structural problem. Here's how to determine the cause of your ceiling cracks—and fix them.
How to Cut Power Before Making Electrical Repairs
Age Wood Furniture in Minutes for a Beautiful, Weathered Look
Safety Tips for Operating a Generator
Dusk-to-Dawn Lantern Provides All-Night-Ambience
How to Rake Leaves Faster with a Tarp and Wooden Dowels
Cracks in ceilings are caused mostly by settling of the house and the expansion and contraction created during that settling.
To repair a crack in a ceiling:
Score the crack with a utility knife to remove any loose plaster or other material that may be inside the crack.
Use mesh tape to cover the crack. This will allow the mud to bond directly to the plaster which will make the repair stronger.
If your ceiling is drywall, you may have to add some screws to hold the two halves in place and make the crack even on both sides.
Apply joint compound over the taped crack.
Once the joint compound is dry, sand the ceiling smooth.
Prime and paint the ceiling.
Read our article on How to Repair Cracks in a Drywall Ceiling to find out more.
Crack Where Ceiling Meets Wall
Not sure who your audience for these videos is, but it’s not an amateur homeowner. Might want to step back a bit instead of focusing on which tape is better when folks aren’t even aware what, when, or why any tape is ever needed at all.