Ceiling water damage is a common problem that can be caused by a variety of factors, including: * Roof leaks * Plumbing leaks * Condensation ## When Should I Be Worried About Water Stains on My Ceiling? If you notice water stains on your ceiling, it is important to be concerned. Water stains can be a sign of a serious underlying problem, such as a roof leak or a plumbing leak. Be sure to inspect the area around the water stains for any signs of damage, such as: * Sagging or buckling drywall * Mold or mildew growth * Rotting wood If you see any signs of damage, it is important to call a professional for repairs.