Home / Services / Hidden Leak Detection
Hidden Leak Detection in Greenacres, FL: Walls, Ceilings and Floors
A hidden leak is water escaping somewhere you cannot see, and in Greenacres homes it is usually inside a wall, above a ceiling, under a cabinet or beneath flooring. By the time a stain, a musty smell or a bubbling patch of paint shows up, the water has usually been there for a while.
Star Florida Leak Detection maps where the moisture is with meters and thermal imaging, traces it back to the source, and confirms it before anyone cuts drywall. In a condo or townhouse, we also establish which unit the water is actually coming from.
Tell us what you are seeing and we will quote the detection price on the phone, before anyone comes out.
- Licensed Florida plumbing contractor
- Local office in Greenacres
- Written, dated leak report
- Members of PHCC and the South East Apartment Association
What Counts as a Hidden Leak?
Any leak you cannot see directly. Most are small, slow and steady, which is exactly what makes them expensive: they run long enough to soak drywall, insulation, subfloor and cabinets before anyone notices.
In Greenacres homes, hidden leaks usually come from a short list of places. Supply lines to sinks and toilets, shower and tub valves inside the wall, fittings where pipe changes direction, water heater connections in a closet, washing machine hoses behind the machine, and ice maker lines behind the refrigerator. In two story townhouses and condos, add the toilet, tub and shower of the unit above you.
Some hidden leaks are on the pressurized supply side and run all the time. Others are on the drain side and only leak when water goes down that drain. A few are not plumbing at all, like a clogged air conditioner condensate line or rain getting in through the roof or a window. Sorting out which one you have is the first thing we do, because each needs a different fix.
Signs of a Hidden Leak in Your Home
Hidden leaks give small clues first. These are the ones worth acting on.
A ceiling stain that grows
A yellow or brown ring on the ceiling, especially under a bathroom or near an air handler, that gets bigger or darker over time.
Bubbling, peeling or soft paint
Paint that blisters or drywall that feels soft when pressed is holding moisture behind it.
Swollen baseboards or door trim
MDF and wood trim swell and split when they soak up water from the wall or floor behind them.
A musty smell in one area
A smell that is strongest in one closet, bathroom or corner often means damp materials and early mold hidden from view.
Warped or lifting flooring
Cupped laminate or wood, loose tiles and grout that stays dark all point to moisture under the floor.
Sound of dripping or running water
A drip or trickle inside a wall when nothing is running is a strong sign of a supply leak.
A cabinet floor that is always damp
Soft or stained cabinet bottoms under sinks usually mean a slow drip at a supply line, trap or faucet connection.
A higher water bill
A supply side hidden leak runs all day and shows up on your bill and your meter.
Pests where there were none
Roaches and other moisture loving pests are drawn to damp walls and cabinets.
Seeing a stain, a smell or soft drywall? Tell us where it is and when it started.
Call (561) 783-8857Plumbing, AC or Roof? How to Tell Before You Call
A wet ceiling in Greenacres has three common causes, and each has a different fix. A few quick checks point the way.
| Clue | Points toward | Why |
|---|---|---|
| Stain grows after heavy rain and stays dry in dry weather | Roof or window | Plumbing does not care about the weather. Rain does. |
| Stain near the air handler, worse on hot, humid days | AC condensate | A clogged condensate drain overflows when the AC runs hardest. See AC condensate leaks. |
| Water meter moves with everything off | Supply plumbing | Pressurized lines leak around the clock and register on the meter. |
| Wet only after a shower, bath or flush upstairs | Drain side plumbing | Drain lines and shower pans leak only while water is flowing. See drain line leak detection. |
| Standing water shows chlorine on a total chlorine strip | Tap water | Palm Beach County Water Utilities uses chloramine in its eastern service area, so tap water reads positive. Condensate and rain usually do not. |
Pool water and reclaimed irrigation water can also carry chlorine, so treat the strip as a clue, not a verdict. We confirm on site before anyone opens a wall.
How We Find a Leak Inside a Wall or Ceiling
Listen to the story
When did you first notice it, does it change with rain, AC use or showers upstairs, and is your water bill higher? The pattern narrows the search before we unpack a single tool.
Check the meter
With everything off, a moving meter confirms a supply leak somewhere. A still meter points us toward drains, the AC or the building envelope.
Map the moisture
Moisture meters show how wet each area is, and how far the water has spread. We draw the wet zone so you can see it, which is often larger than the visible stain.
Scan with a thermal camera
Wet materials and hot water lines show up as temperature differences. A thermal image helps us follow the water path to the likely source without opening anything.
Test the suspect fixtures
We run showers, tubs, sinks and appliances one at a time and watch the readings. A reading that jumps when one fixture runs tells us exactly which one is leaking.
Confirm before any opening
If the leak is inside the wall, we mark a small, targeted inspection opening, not a trench of torn drywall. You see the reason for every cut before it is made.
Write it up
You get a dated report with the source, the moisture map, photos and readings. It is written for your insurer, your association and, where it applies, the unit owner above or beside you.
Where Hidden Leaks Usually Start
Shower and tub valves
The valve body and its connections sit inside the wall. A slow drip there can soak the wall cavity for months before the tile or the room next door shows it.
Supply lines and shutoff valves
Flexible supply lines to sinks and toilets wear out, and old shutoff valves weep at the stem. These are cheap parts that cause expensive damage.
Fittings in the wall
Elbows and tees where pipe changes direction are common failure points, especially on older copper and on polybutylene, a gray plastic pipe used in many homes built from 1978 to 1995.
Toilet wax rings
A failed seal under a toilet leaks only when it is flushed, and the water goes straight into the subfloor or the ceiling below.
Appliance connections
Washing machine hoses, dishwasher lines and refrigerator ice maker lines hide behind appliances where no one looks. See fixture and appliance leaks.
Water heater closets
Connections on top of the heater, the relief valve and the drain valve can all leak into a closet floor or wall. See water heater leak repair.
Hidden Leaks in Condos, Villas and Townhouses
Greenacres has a lot of attached housing, including seventeen 55 and over communities. In a shared building, the question is not just where the leak is, but whose it is.
Water travels. A leak from the bathroom above can show up in your kitchen ceiling, and a leak in your wall can show up next door. Before anyone argues about who pays, you need facts: where the water enters, which fixture it comes from, and which unit that fixture belongs to.
Our report states that plainly, with moisture readings and photos that show the path. Associations, managers and insurers can all work from the same page. As members of the South East Apartment Association, we do this work for property managers regularly, and we write reports with multiple parties in mind.
What to do if water is coming from above
- Tell your neighbor and your association or property manager right away, in writing.
- Photograph the ceiling and anything damaged, with the date.
- Ask for access to the unit above so the source can be tested. Most leaks are found within a single visit when both units can be checked.
- Notify your own insurer promptly. Many Florida policies treat leaks lasting 14 days or more differently.
Hidden Leaks and Mold in Florida’s Humidity
Mold needs moisture, and our climate already supplies a lot of it. Water trapped inside a wall or under flooring does not dry on its own in a humid South Florida house. The U.S. EPA advises drying water-damaged materials within 24 to 48 hours to help prevent mold growth, which is hard to do when the water is hidden.
That is why finding the source quickly matters as much as fixing it. Stopping the leak comes first. Drying the area properly comes next, and drywall, insulation or pad that stayed wet for a long time may need to be removed rather than dried.
What we do and what a restoration company does
We find and fix the leak and document the wet area. If the materials need drying equipment or removal, a water mitigation or restoration company handles that part. Our moisture map tells them exactly where to work, and it tells your insurer why.
If you already see mold on surfaces, avoid disturbing it and ask your insurer about mitigation. Our job is to make sure the water that caused it has stopped.
Repairing a Hidden Leak
Targeted access
Once the source is confirmed, we open only what we need to reach it. On a shower valve, that is often from the back side of the wall, in a closet or the room next door, to spare the tile.
Fix the cause, not the symptom
We replace the failed fitting, valve or line and pressure test before closing up. If the pipe itself is failing in several places, we tell you and price the options.
Permits where required
Repairs that require a permit go through the City of Greenacres Building Department. We handle the application and the inspection.
Closing up
Drywall patching and painting can be handled after the area is confirmed dry. We will tell you what to expect so nothing is closed up wet.
Insurance and Your Water Bill
Resulting damage
Many Florida policies cover resulting water damage from a sudden leak but not the plumbing repair itself, and some cover tearing out and replacing the wall or floor to reach the pipe.
The 14 day rule and limited water caps
Many policies exclude leakage lasting 14 days or more, and older homes often carry limited water coverage, frequently capped at $10,000. Act fast and document when you first noticed the problem. General information, not insurance advice.
County usage credit
If a supply side hidden leak drove up your bill, Palm Beach County Water Utilities may credit part of it through its Excessive Usage Credit. See the qualifying rules.
What to Do Right Now
Stop active water
If water is dripping or spreading, close the fixture’s shutoff valve or the main shutoff at the house.
Protect what you can
Move furniture and electronics, and put down towels or a bucket. Keep people and cords away from wet ceilings.
Photograph and note the date
Photos of the stain, the damage and your latest water bill help your insurer and your association.
Do the meter test
With everything off, check the leak indicator on your meter. Here is how. Tell us the result when you call.
Do not start cutting drywall
Water travels inside walls. The stain is often not in front of the leak, and guessing adds damage.
Hidden Leaks Room by Room
Where you see the damage tells us where to start looking. Here is what each room usually points to in Greenacres homes.
Kitchen
Damp cabinet floors, swollen toe kicks or a soft spot in front of the sink usually trace back to the faucet supply lines, the shutoff valves, the drain trap, the dishwasher connections or the refrigerator ice maker line. Many of these leak only when the appliance runs, so we run each one while watching the readings.
Bathrooms
Stains on the ceiling below a bathroom, loose floor tile around a toilet or discolored grout at the base of a shower point to the shower valve, the shower pan, the tub drain or the toilet seal. A flood test of the shower pan and a dye test of the toilet separate drain leaks from supply leaks.
Laundry area
Washing machine hoses are under pressure whenever the valves are open, and the standpipe drain can overflow or leak at the wall. Water behind the washer often spreads under the floor or into the next room before anyone moves the machine.
Hallways and interior closets
A wet hallway ceiling or a damp closet near the air handler is often the AC condensate drain, not plumbing. If the meter is still and the water tests negative for chlorine, we check the condensate line and pan before anything else.
Garage
Many Greenacres water heaters sit in the garage. A damp slab near the heater, a rusty drain pan or water along the wall behind it points to the heater connections, the relief valve line or the tank itself.
Exterior walls
Water on the inside of an exterior wall can be a hose bib connection, a plumbing line in the wall, or rain getting in around a window or through stucco. Rain related leaks follow the weather. Plumbing leaks do not.
What Hidden Leak Detection Costs
We quote the detection price on the phone before we come out, and a written repair price after the leak is found. For context, one South Florida plumbing company’s 2026 guide puts standard residential leak detection at roughly $75 to $500, with more complex cases costing more.
The biggest cost drivers on a hidden leak are not the detection. They are how long the water has been running and how much material it has soaked. A small opening and a replaced supply line cost little. A wall cavity and subfloor that stayed wet for months can mean drying equipment, removed drywall and new flooring, most of which is avoidable by acting early.
- Ask whether the detection fee is credited toward the repair.
- Ask for a written moisture map so a restoration company does not have to guess.
- Keep every report and invoice for your insurer and for the county.
Frequently Asked Questions
How do you find a leak inside a wall without tearing it open?
We map moisture with meters, scan with a thermal camera, check the water meter and test suspect fixtures one at a time. Only after the source is confirmed do we make a small, targeted opening, if one is needed at all.
Is a ceiling stain always a plumbing leak?
No. In Greenacres, ceiling stains also come from clogged AC condensate drains and from roof or window leaks. If the stain grows after rain, think roof. If it is near the air handler on humid days, think AC. If the water meter moves with everything off, think plumbing.
Why does my ceiling only leak when someone showers upstairs?
That usually means a drain side leak, such as a failed shower pan, a tub drain or a toilet seal. It will not move your water meter, which is why a supply pressure test can miss it.
Can a hidden leak cause mold?
Yes. Trapped moisture in walls and under floors feeds mold, and South Florida humidity makes drying harder. The U.S. EPA advises drying water-damaged materials within 24 to 48 hours to help prevent mold growth.
Who pays when water comes from the condo above me?
It depends on the source and your association documents. Our report identifies where the water enters and which unit and fixture it comes from, so the association, owners and insurers can decide responsibility from the facts.
Will my insurance cover a leak inside the wall?
Many Florida policies cover sudden resulting water damage but not the plumbing repair, and some cover tearing out the wall to reach the pipe. Watch for the 14 day leakage exclusion and limited water caps on older homes, and check your own policy.
How long does hidden leak detection take?
Most visits take one to a few hours, depending on the size of the wet area and how many fixtures need to be tested.
Can I get my water bill reduced for a hidden leak?
If the leak was on the supply side and drove up your usage, Palm Beach County Water Utilities may credit part of the bill through its Excessive Usage Credit. The rules are on our homepage.
Do I need a permit to repair a leak in the wall?
Some plumbing repairs require a permit from the City of Greenacres Building Department. We will tell you if yours does and handle it.
What should I do if I smell mold but see no water?
Check the water meter with everything off, look under sinks and behind appliances, and call us. A musty smell in one area is often the first sign of a slow hidden leak.
Question not answered here? Call (561) 783-8857 and ask. Talking it through costs nothing.
Related Leak Services in Greenacres
Find the Leak Behind the Stain
Every day water sits inside a wall, it soaks more material and gives mold more time. Call us, tell us where you are seeing it, and we will give you the detection price before we come out.
Star Florida Leak Detection, 4021 S 57th Ave #105, Greenacres, FL 33463. Member of PHCC and the South East Apartment Association. Last updated September 2026.