Water is coming through the ceiling: what to do first

Move what is underneath it, then look up at the lighting. Stock is replaceable and the electrics are the part that hurts somebody. If water is running anywhere near a fixture, a track or a ceiling void with cabling in it, keep people out from under that area and treat it as live.

Then put something under the drip and start looking for where it came in.

The lighting comes before the stock

Water finds cable trays, conduit and fittings because they are the things running horizontally through a ceiling void. A fixture that is filling with water will eventually let go of it, and a wet luminaire can stay energized the whole time.

Isolating the affected circuit is the correct move and it is electrical work. Florida requires a licensed electrical contractor for that at any job size, and the rule does not soften because the job looks small. If nobody on site is qualified to do it, keeping people away from underneath is the right answer until somebody is.

Where it is actually coming from

Water almost never drops straight down from its entry point. It runs along the top chord of a joist, down a conduit, along the underside of a deck, and leaves at the first low point or the first joint. The wet tile tells you where it left, and very little about where it started.

Work upward and outward. If there is a floor above, go there first and look for a running fixture, an overflowing sink, a failed supply line or a floor that has been washed down. If you are on the top floor, the roof is the candidate. If the leak started in the last hour and there has been no rain, it is a service rather than the building envelope.

The four usual sources

A plumbing failure above, which is a supply line, a waste line or a fixture on the floor above. These run regardless of weather and are usually the ones that arrive fast.

An HVAC condensate line that has blocked or come apart. This is the most common one in Miami and it is easy to identify: it appears in cooling weather, near an air handler, and often stops when the unit cycles off. Our piece on air conditioning that is not cooling touches on the same drain.

The roof, which shows up during or shortly after rain and usually near a penetration, a curb, a drain or a parapet. The roof checks article covers what tends to fail first.

A sprinkler head or a fire main, which is rarer and much more urgent, because the volume does not stop until somebody isolates it.

What to record while it is happening

Photograph the ceiling, the source once it is found, and everything the water reached. Note the time it started, the weather, and whether anything on the floor above was running. Keep whatever was damaged rather than disposing of it.

In a multi-tenant building this record decides who pays, and it is much harder to assemble a week later from memory. Our article on repair responsibility between landlord and tenant covers how those lines usually fall.

Which half we do

The plumbing, the roofing, the refrigeration and the electrical isolation are coordinated through licensed contractors, because Florida requires a license for all four and the size of the leak does not change that.

Making the space usable again is our own technicians: ceiling tile replacement, drywall patching, repainting the affected area and the general maintenance that follows. That work happens after the source is fixed and the void has dried, which is the part people rush. Patching over a ceiling that is still damp puts the same stain back in two weeks. Our article on drywall repair after a leak covers the drying question in detail.

When it cannot wait

Call immediately if water is reaching lighting or any electrical equipment, if the ceiling is sagging or bulging, if the volume is increasing, or if it is a sprinkler line. Any of those is a tonight job.

It can wait for a scheduled visit if the drip has stopped, the source is understood and the only remaining work is making good. A stain on a dry ceiling is a repair, not an emergency, though it still needs the source confirmed rather than assumed.