Ridges in drywall seams

摘要

Q About a month after I finished some drywall repairs to a wall and ceiling, several ridges appeared along the seams. They're about V* in. wide and V* in. high, and they range in length from 4 in. to 18 in. Mudding and taping were unremarkable. What happened? A Myron R. Ferguson, aka "That Dry wall Guy," replies: It could be one of sev-eral things. Most likely, these ridges are the result of some building movement in com-bination with an inadequate connection between the dry-wall and framing. The edge of the drywall may have barely caught the framing and as a result wasn't attached securely.