Discoloration around the edges of the crack indicates a leak. If the tape is lifting in multiple areas, however, your best bet is to re-tape all the seams because the problem will continue to recur. If there’s only one crack, try squirting a little household glue behind it and pressing it back into place.
When this happens, you’ll see a fine crack where the tape has lifted. If the tape doesn’t have enough mud underneath to stick firmly, it can start to pull away from the wall over time. When drywall panels are installed, the seams between the panels are filled with drywall mud and covered with paper tape. A thin straight crack could be the result of faulty taping.
Like other wall cracks, these can be re-taped and painted. Fluctuations in temperature and humidity levels can cause framing members and drywall to expand and contract, resulting in cracking. This is due to the house not being climate controlled as it would be if it were occupied. Vacation homes and those that sit empty for a few months are prone to developing cracks in both walls and ceilings. Leaving a house vacant can cause wall cracks. After that, you can re-tape the cracked joints (see the last section below for how-to info) without worrying that more will appear. This gives the wood time to dry completely. It’s a good idea to wait a year after your home was completed before repairing any cracks. New lumber, sometimes called “green lumber,” contains a high level of moisture and tends to move slightly as it dries out, so small wall cracks are common in newly built homes. RELATED: 6 Low-Cost Lifesavers to make Wall Repair a Cinch Causes of Cracks in Walls If your home was recently built, cracks in walls could be the results of “new home” settling. Here’s how to determine if the crack is flagging a serious problem, and what steps to take to get your wall back in shape. Occasionally, however, cracks in walls signify a larger problem that should be addressed before you attempt to repair the crack. A: Wall cracks are fairly common in both new and older homes and are often the result of normal house “settling” that can quickly, inexpensively be remedied by re-taping the joints-the seams where the drywall panels meet.
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