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Question DetailsAsked on 1/28/2015

Long hairline cracks in the middle of the ceiling and in corners between wall and ceiling throughout the house

My home is 8 years old, 1 story in California. I have a few hairline cracks in the ceiling. I was aware of a long straight crack in living room when I purchased my house a year ago. Hairline crack runs 30 ft long in my living room(16ft x 35ft). Crack was narrow and straight but width of crack got wider over year. It is now about 1/16 inch. After big storm last month, I also started to have other long hairline cracks: one w/ 15ft long in my dining room ceiling. A few other hairline cracks between wall and ceiling in hallway & garage also noted. As I took pictures of crack in hallway, camera flash light picked up some water stain along the crack, which wasn’t visible with bare eyes. I showed pictures to my coworkers and was told it could be just tapes rather than water stain. I touched the dark spot in picture and it felt different but not soggy. I also have small cracks around vent area in my master room ceiling. This started to become frustrating. Can someone give me some insights?

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2 Answers



Under Normal Lights

Under Camera Flash. The stain(?) is not that visiable with bare eyes. My camera flash picked this up. Could this be water stain or just tapes?



Please look in the bottom right corner.

At a closer look. The stain(?) is not that visible with bare eyes. Again, it's the camera flash that picked it up. Could this be water stain?

Answered 5 years ago by fullback100


Lot of possibilities - house settlement pulling hard enough to separate the tape, moisture (from above or due to high ceiling getting cold enough to condense moisture, which is then affecting the joint), moisture or frost forming in the attic (or from a leak) putting weight on the ceiling (flat parts) or running along the drywall and then hitting the joints and affect it, lousy taping job or poor quality tape, inadequate fasteners so drywall is pulling loose (might or might ot eventually fall if that is the case)- just a bundle of possibilities. Following are some links to similar questions with answers, though each case is different - I would say a good old-time drywall contractor or General Contractor might be able to give you a better idea after they have looked at it.

In your case, I don't see that as taping issues - looks like moisture staining to me, and since showing up in more areas, I would concentrate on attic moisture sources - leaking roof, winter condensation/frosting in attic, leaking air conditioner evaporator pan if A/C is up there, condensation on A/C lines or ducting dripping onto drywall, etc.

Answered 4 years ago by LCD

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