Quick answer
Keep clear of a wet or bulging ceiling and treat nearby electrics as dangerous. If safe, shut off the water at the stopcock, then contact the property above or a plumber to find the source; a ceiling stain alone does not show where the leak started.
Keep people and electrics safe
A ceiling can hold water before it gives way. Move people, pets and possessions away from sagging plaster, cracks or active drips. Do not climb up to inspect it, push the ceiling or make a hole to drain it; these actions can cause a sudden collapse.
If water is at a light fitting, socket or wiring, do not touch it or stand in water. Turn off the affected circuit at the consumer unit only if the unit and route to it are dry and safe. Otherwise leave the area and seek qualified help. Water-related electrical faults need an electrician to confirm the installation is safe before it is used again.
Try to stop the source
- 1If the leak may be from your own plumbing, close the internal stopcock if safely accessible. Do not force a stiff valve.
- 2If you live below another home, contact the occupier or building manager promptly so they can check taps, toilets, appliances and heating. Do not enter another property without permission.
- 3If safe, place a container beneath a drip and move belongings away. Avoid using affected bathroom or kitchen fittings until the source is identified.
- 4Note when the leak began and whether it changes when taps, toilets or heating are used. This information can help a plumber narrow down the cause.
Investigate and document
Water may travel along joists or pipework before appearing in a different spot, so the visible patch is not necessarily directly below the fault. A plumber may need to inspect the property above, accessible pipework and the ceiling area to trace the route. TraceFix engineers in Birmingham and London can investigate plumbing leaks and advise on the next steps.
Take dated photographs of the ceiling and any affected belongings, if safe. Contact your insurer to ask about emergency mitigation, approved contractors and evidence requirements. If you rent or manage the property, notify the landlord, letting agent or managing agent as soon as possible and keep a record of communications.
When to call a plumber
- The ceiling is bulging, cracking or shedding plaster.
- Water is near a light fitting, socket or electrical equipment.
- The leak continues after you have safely isolated your own supply.
- The source may be in a neighbouring flat or concealed pipework.