Water leaks through a ceiling because something directly above it is leaking. The usual sources are a bathroom fixture overhead, a supply or drain pipe running through the ceiling, an appliance on the floor above, condensation on cold pipes, or rain coming through the roof. The timing of the drip usually points to the right one.
What the Timing Tells You
- Drips after a shower, bath, or flush: likely a drain or fixture seal
- Drips all the time, even overnight: likely a pressurized supply line
- Drips only during or after rain: likely the roof, flashing, or a window
- Small drips in humid weather along a pipe: possibly condensation
Common Bathroom Sources
A toilet whose wax ring has failed can let water seep into the floor with every flush. Gaps in caulk or cracked grout around a tub let shower water slip behind the walls. A loose tub drain can leak slowly for months before a stain appears below.
Upstairs Appliances
Washing machines and dishwashers on the upper floor have hoses and drain connections that can crack or loosen. Check behind and under them if the stain sits below a laundry area or kitchen, and look for damp spots on the floor around them.
What to Do Right Now
Set a bucket under the drip and move furniture and electronics away. Keep everyone out from under a ceiling that sags, since it may be holding a lot of water. Avoid wet light fixtures and turn off that circuit if you can reach the panel safely.
Keep an eye on the stain over the next day, since a ring that keeps growing means water is still coming through.
Once you have a likely source, the source overhead can be found and fixed and fix it. After the repair, fresh caulk and grout in the bathroom above can help prevent a repeat. Call JPR Plumbing at (833) 603-1840.