Ceiling water stains appear when water from above soaks into the drywall and then dries, leaving a ring. The source is usually a bathroom fixture overhead, a leaking supply or drain pipe in the ceiling, an appliance hose on the floor above, condensation from cold pipes or ducts, or a roof or window leak during storms.
Read the Stain
The size, shape, and timing of a stain can say a lot. A stain directly under a toilet or tub often points to a failed seal or drain. A long, narrow stain may follow the path of a pipe. A stain that grows after heavy rain usually means the roof, flashing, or a window is letting water in, which is a job for a roofer.
Test the Fixtures Above
If there is a bathroom over the stain, try this: run the shower for a few minutes, then check the ceiling. Do the same after flushing the toilet and filling the tub. A stain that darkens after one of these tests usually identifies the source. If the stain stays wet even when nothing is used, a pressurized supply line may be leaking.
Condensation and Appliances
In humid months, cold pipes and air conditioning ducts can sweat. The drips may leave light, spotty stains. Washing machines and dishwashers on upper floors can also leak at their hoses or drain connections.
When a Stain Becomes Urgent
A ceiling that sags, feels soft, or drips steadily can hold a surprising amount of water. Keep people out from under it. Turn off any light fixture in the wet area at the breaker if you can do so safely. In apartment buildings, contact the unit above and the super.
Painting over a stain without fixing the cause only hides the problem. A plumber can track the moisture to its source and repair it. Once the source is fixed, a check of the other fixtures upstairs can prevent a new stain. Call JPR Plumbing at (833) 603-1840.