I have read through the questions and answers concerning the popping and/or cracking of walls, but my situation is a little different. In the earlier inquiries the construction is only a few years old. My house is 13 years old and the popping started last winter. The sound is similar to the wall being hit by a hammer or as if it has been hit by a bullet. The pops are always along the top plate and are never in the same spot. They occur regularly... day and night and when they do occur they are extremely loud! My wife all but jumps out of her skin! I jump a little too!
I'm sure that the weather has something to do with it as it only happens during the colder months, but I'm concerned that something may be settling after all these years... is that possible? I see no cracks or breaks in the wall or foundation. Any suggestions?