
When you have a water stain on a ceiling, trace the outline of it with a pencil. If the stain never goes outside the pencil line over the following weeks'months, then you are probably OK. If it does go outside of the pencil line, then very likely you have a leak of some sort that you will need to address. But why use a pencil? Pencil is easily painted over, unlike pen or marker. Questions? Contact me!