Lacey, WA

Hidden Leak Detection in Lacey, WA

The stain is where the water ended up. It is not always where the leak is. We trace hidden leaks through walls, ceilings and floors back to their real source.

Call (360) 000-0000

The Problem With Following the Stain

Water inside a wall does not drip straight down. It runs along the top of a pipe, follows a stud, soaks into insulation, rides the top of a ceiling joist, and finally shows through where the drywall is weakest.

That is why a ceiling stain in the living room can come from a toilet two rooms away, or a stain on a wall can come from a pipe fitting a floor above. Cutting where the stain is often means cutting twice.

What a Hidden Leak Looks Like

On ceilings

Yellow or brown rings that grow over time
Sagging or soft drywall
Drips from light fixtures or vents

On walls

Bubbling, peeling or blistering paint
Wallpaper lifting at the seams
Drywall that feels soft or crumbles when pressed
Dark spots near the baseboard

On floors

Warped, cupped or lifting boards
Stained or damp carpet
Loose tile or cracked grout

Anywhere

A musty smell that will not go away
Mold spots that come back after cleaning
The sound of water in a wall when nothing is running

Common Sources Behind the Wall

Where the damage shows	What is often behind it
Ceiling below a bathroom	Toilet seal, shower pan, tub drain or supply line
Ceiling below a kitchen	Dishwasher line, sink drain, fridge water line
Wall behind a sink	Supply valve, drain trap, loose fitting
Exterior wall	Pipe damaged by a freeze, hose bib leak, or rain getting in from outside
Wall next to a laundry room	Washing machine hoses or drain box
Floor near a bathroom	Wax ring, shower valve, or drain line

Not every stain is plumbing. Roof leaks, window leaks and condensation all cause stains too. Part of our job is telling you which one you have, especially during Lacey's long rainy season when outside water gets in more often.

How We Trace It

Look and ask.
Where is the damage, when did it appear, does it change with rain or water use?
Moisture map.
Meters show how far water has spread in the drywall and framing, and which direction it is coming from.
Thermal imaging.
Wet areas show up as temperature differences on a thermal camera, often revealing the path water took through the wall.
Pressure and fixture tests.
We run or isolate fixtures one at a time to see what makes the leak active.
Acoustic listening.
For pressurized lines, we listen for escaping water through the wall.
Mark the source.
We mark the exact point to open, and it is usually smaller than the stain.

What You Leave With

The exact source marked on the wall, ceiling or floor
Whether the cause is plumbing, roof, window or condensation
Photos and moisture readings
A clear idea of what repair is needed

In Multi Unit Buildings

In apartments, condos and townhomes, a hidden leak often starts in one unit and shows up in another. We trace it across the shared wall or floor so the owner, tenant and property manager know whose plumbing failed. This matters in newer multi story buildings like those going up in the Woodland District and around Hawks Prairie.

Frequently Asked Questions

Can you find a leak without opening the wall?

Yes. We find and mark it from the surface. The only opening is for the repair.

How do I know if a ceiling stain is from plumbing or the roof?

If it grows during rain, the roof or a window is more likely. If it changes when a shower or toilet is used above, it is likely plumbing. We confirm it with testing.

Is a hidden leak dangerous?

It can be. Wet drywall and framing grow mold, and water near wiring is a safety risk. Leaks also weaken ceiling drywall until it sags or falls.

My stain dried up. Do I still need detection?

Probably. Many leaks come and go with fixture use. A dry stain can still have a leak behind it that will return.

Can you tell which unit a leak is coming from?

Yes. We test fixtures and plumbing in each unit to find the source, then document it for everyone involved.