Mystery Stains on Bathroom Wall
We live in a fairly newly built house. Built 6 years ago. We have noticed some stains along the bathroom ceiling near the molding. The attic is directly above the bathroom but we could not find any water leaks and the attic is bone dry. We can't figure out where the stains came from. The good news is that the stains are not growing in size. Any opinions on what this might be?