Leak Detection — Greater Seattle
Find hidden leaks before they cause serious damage
Is There a Leak You Can't See?
A hidden leak can cause thousands of dollars in damage before you even know it’s there — rotting framing, growing mold, warping floors, and skyrocketing water bills. If you suspect a leak but can’t find it, Done Right Plumbing can help.
We use professional leak detection equipment to pinpoint leaks behind walls, under slabs, and underground — so you know exactly what you’re dealing with and can fix it before the damage gets worse.
Signs You May Have a Hidden Leak
These warning signs often indicate a leak somewhere in your plumbing system:
- ✓Unexplained spike in your water bill — often the first sign of a hidden leak
- ✓Water meter running when nothing’s on — turn off all fixtures and check the meter
- ✓Wet spots on walls or ceilings — especially if they grow or return after drying
- ✓Warped or buckled flooring — from water damage underneath
- ✓Musty or moldy smell — moisture hidden in walls or subfloors
- ✓Sound of running water — when no fixtures are in use
- ✓Low water pressure — throughout the house, not just one fixture
- ✓Hot spot on the floor — may indicate a hot water line leak under a slab
- ✓Cracks in foundation — water leaks can erode soil and cause settling
Our Leak Detection Process
Listen and Inspect
We start with a visual inspection and listen for the sound of running water using acoustic equipment that amplifies the sound of leaks behind walls and under floors.
Pressure Testing
We can isolate sections of your plumbing and test for pressure drops that indicate leaks.
Thermal Imaging
Infrared cameras detect temperature differences in walls and floors that reveal hidden moisture.
Electronic Line Location
For underground leaks, we use electronic equipment to trace pipe locations and pinpoint leak sources.
Camera Inspection
When needed, we run a camera through drain and sewer lines to identify leaks, cracks, or damage.
Common Sources of Hidden Leaks
Slab Leaks
Water lines running under your concrete foundation can develop leaks from corrosion, shifting soil, or poor installation. These are often first noticed as warm spots on the floor (hot water lines) or the sound of running water.
Behind Walls
Supply lines in walls can leak at fittings, from corrosion, or from accidental damage (like a nail through a pipe). You may notice wet drywall, peeling paint, or mold growth.
Under Floors
Leaks in subfloor plumbing can rot framing and subfloor materials before becoming visible. Warped flooring or a musty smell are common signs.
Underground Water Lines
Main water line leaks may show as wet spots in the yard, higher-than-normal water bills, or low pressure in the house.
What Happens After We Find the Leak?
Once we locate the leak, we’ll explain your repair options and provide upfront pricing. Depending on the situation, we may recommend:
- ✓Spot repair — if the leak is accessible and isolated
- ✓Pipe reroute — sometimes it’s easier to run a new line than to repair the old one
- ✓Whole-home repipe — if the leak is part of a larger pattern of failing pipes (learn more)
Why Choose Done Right Plumbing?
- ✓Professional detection equipment — we find leaks others miss
- ✓50+ years combined experience in the greater Seattle area
- ✓300+ five-star Google reviews from real homeowners
- ✓We repair what we find — one company for detection and repair
- ✓Upfront pricing — you’ll know your options and costs before we start
- ✓WA Contractor License #DONERRP852N5 — fully licensed, bonded & insured
We Serve Lynnwood, Everett & Surrounding Areas
Hidden leaks are common in older homes throughout Lynnwood and Everett — aging galvanized pipes, slab leaks, and failing fittings are all part of the story with 1950s–70s housing stock. We have the equipment to find leaks others miss.
Related services: Whole-Home Repipe | Trenchless Water Line Replacement | Emergency Plumbing
FAQs About Leak Detection
How much does leak detection cost in Lynnwood?
Leak detection costs depend on the complexity of the search and the equipment needed. Simple detection is less expensive; slab leaks or underground water line leaks may require more extensive investigation. We always provide upfront pricing before we start. Call us at 425-245-7552 for a free estimate.
How do you find a leak behind a wall?
We use a combination of acoustic equipment (listening for the sound of running water), thermal imaging (detecting temperature differences from moisture), and pressure testing. For stubborn cases, we may use electronic line location or camera inspection.
Can you find a slab leak without tearing up my floor?
Yes — our detection equipment lets us pinpoint slab leaks without exploratory demolition. Once we know exactly where the leak is, we can discuss repair options — sometimes a spot repair, sometimes a reroute around the slab is the better option.
My water bill spiked but I can’t find a leak — can you help?
Absolutely. Unexplained water bill spikes are one of the most common reasons homeowners call us for leak detection. The leak is often underground, under the slab, or behind a wall where you can’t see it.
Do you repair the leak after you find it?
Yes — we’re a full-service plumbing company. Once we locate the leak, we’ll explain your repair options and provide upfront pricing. One company, one call, problem solved.
Suspect a Hidden Leak?
Don’t wait for water damage to get worse. Call Done Right Plumbing for professional leak detection in the greater Seattle area.