It looks like drywall tape that has separated and not an actual crack. As far as sounds from the attic, I have them at my house also at night after the attic heats up all day then temps drop at night.
Where in the home is this happening?? How old is the home? Has there been any recent upgrades or changes to the home? Are there any other cracks or movement that you can see?? It could be truss uplift but can’t tell from you picture where exactly this is. More detail would be appreciated.
Agree. The gloss paint also indicates this is likely a bathroom, my guess being a recently renovated (flip) application. The wrinkles are from poor workmanship while taping/mudding the joints.
Hi Greg,
It is in a coach house and is in the kitchen/living room.
Now that you mention it, it looks like a similar situation is happening in the bathroom in a much smaller scale.
Nothing has changed at all. Only thing I can think of is that 4 week ago I shut off some of the attic fan vents?
Had got a lot colder here in the UK in the last month. Could this be relevant?
Looks like plaster walls to me. You would not have paper tape on a plaster wall unless it was a repair. Could be truss uplift originally and a bad repair job after the fact. Wrinkling is usually caused by movement or painting the tape after it had already lost it’s bond.