Leak Detection Tigard — Locate the Source Before the Repair Begins
Non-destructive acoustic and thermal leak detection for Tigard homes and commercial properties. Slab leaks, yard laterals, irrigation system failures — we pinpoint the exact failure location so your plumber opens the right spot, not every square foot of floor.
Leak Detection in Tigard — Why Washington County Homes Need a Different Approach
Tigard’s residential development tells a specific plumbing story. The city expanded rapidly from the late 1950s through the early 1980s — Bull Mountain development, the Metzger area, Summerfield, Durham Road corridor — each era bringing different pipe materials and failure patterns. On top of that, Tigard’s geography introduces pressure variables that don’t exist in flatter parts of the metro: homes on Bull Mountain’s upper elevations run different static line pressures than homes in the Fanno Creek corridor below. Pressure matters in leak detection — it changes how we isolate and how we test.
1950s–1960s Homes (Galvanized and Early Copper)
The Metzger neighborhood and older Tigard core areas saw construction with galvanized steel supply lines transitioning to copper through the 1960s. At 60–75 years old, both materials show characteristic failure patterns: galvanized from interior scale and corrosion, early copper from pinhole failures at mid-span and joint connections. Pressure isolation combined with thermal imaging is the standard approach here.
1970s–1980s Slab Construction (Copper Under Concrete)
Tigard’s major residential growth phase — the Bull Mountain foothills, Summerfield, Brittany Square, and areas off Pacific Highway — used copper supply lines run under slab foundations. At 40–55 years old, these are entering the primary failure window for slab copper pinhole leaks. Thermal imaging is the first-line tool for slab leaks — it maps the pipe path and identifies temperature anomalies before any concrete is opened.
Bull Mountain Pressure Considerations
Homes above 400 feet elevation on Bull Mountain frequently run static pressures above 80 psi — sometimes 90–100 psi without a pressure reducing valve. High static pressure accelerates pinhole formation in copper and increases the likelihood of joint failure over time. If your Tigard home sits on higher ground and you’re seeing unexplained leaks, pressure measurement is part of the detection visit, not an add-on.
Fanno Creek and Low-Lying Areas
Tigard properties near Fanno Creek and the wetland corridors along Highway 99W experience different soil conditions — softer, more saturated ground that shifts seasonally. Yard laterals and service lines in these areas are more susceptible to movement-related fitting failures at joints and connections. Acoustic tracing along the lateral path identifies these failures without excavating the entire service run.
Six Signs a Tigard Home Has a Hidden Leak
These indicators show up consistently in Tigard service calls across Bull Mountain, Metzger, Summerfield, and the Durham Road neighborhoods. Any single one warrants a meter test. Two or more together is urgent.
Unexplained Tualatin Valley Water Bill Spike
An increase of 15–25% or more on a single billing cycle from Tualatin Valley Water District — with no change in household use — is the most reliable early indicator. Slab copper pinholes in Tigard’s 1970s homes can lose 200–400 gallons per day with no surface symptom for weeks.
Warm or Damp Spot on Tile or Hardwood
A persistent warm patch on flooring — especially in a kitchen, hallway, or bathroom on a slab-foundation home — typically indicates a hot water supply line failure below the concrete. Thermal imaging detects this before any floor is cut.
Running Water Sound — Nothing Is On
If you can hear water moving through walls or floors with every fixture off and the washer idle, there is active flow in the supply system. In Tigard’s slab homes this almost always means a pressurized line is breached somewhere under the concrete.
Unusually Green Patch in Yard
A section of lawn that stays greener, lusher, or wetter than the surrounding grass during dry summer months — especially along a line running from the meter to the foundation — often marks a failing service lateral or irrigation supply line beneath.
Pressure Drop at Fixtures
Gradual pressure loss at one or more fixtures — shower weaker than it used to be, kitchen faucet slow at full open — can indicate a supply line breach losing pressure to the structure. In Tigard’s higher-elevation homes, this can be confused with PRV failure, which the meter test distinguishes quickly.
Meter Moving With Everything Shut Off
The single most reliable confirmation: shut off every fixture and appliance, wait three minutes, watch the meter dial or digital readout. Any movement — even the small low-flow indicator — means water is going somewhere it shouldn’t. Do this before calling; it tells us a great deal about urgency.
Tigard Pipe Era Reference — What’s Likely Under Your Home
Construction era is the fastest predictor of pipe material and failure type before any testing begins.
| Home Built | Likely Pipe Material | Typical Failure Mode | Detection Method |
|---|---|---|---|
| Pre-1960 | Galvanized steel | Interior corrosion, scale blockage, pinhole | Pressure isolation + acoustic |
| 1960–1975 | Copper (slab or crawl) | Pinhole corrosion, joint failure | Thermal imaging + acoustic |
| 1975–1990 | Copper under slab | Mid-span pinhole, fitting failure | Thermal imaging + acoustic |
| 1990–2005 | CPVC, copper | CPVC brittleness, joint separation | Pressure isolation + visual |
| 2005+ | PEX, copper | Fitting failure, pinhole at connections | Pressure test + acoustic |
How We Find the Leak — Six Steps, Every Tigard Job
Every Tigard detection job follows the same methodical sequence regardless of home age, pipe material, or leak type. We don’t open a single wall, floor, or yard until non-destructive testing has confirmed the failure segment and location.
Meter Test & Pressure Measurement
We start at the street meter with all fixtures off, watching for three to five minutes. We also measure static line pressure at a hose bib. In Tigard’s Bull Mountain neighborhoods, pressure above 80 psi is itself a finding — it affects repair planning and is often a contributing cause of the failure in the first place.
Zone Isolation
We shut the house supply and recheck the meter. If flow stops, the leak is inside the structure. If it continues, the failure is in the service lateral between the meter and foundation — yard territory requiring a different approach. Inside the structure, we isolate hot and cold separately, then branch by branch, narrowing to the smallest segment that shows pressure loss.
Thermal Imaging Scan
For Tigard’s slab homes — the majority of 1970s and 1980s construction — we run a thermal imaging camera across the floor surface after pressurizing the suspect branch. Water migrating through or or under the slab creates temperature anomalies visible through tile, hardwood, and vinyl flooring. This maps the leak zone and the pipe path without any floor opening.
Acoustic Confirmation
We pressurize the suspect branch and listen along the pipe route with a ground microphone and electronic amplifier. The acoustic signature — frequency, volume change — shifts as we move toward the source. This is how we get from a thermal zone to a specific point: typically within four to eight inches of the actual failure.
Failure Point Marked
We mark the floor or ground surface at the confirmed detection point. That mark is what your plumber uses to plan the minimum-impact repair — one concrete saw cut instead of a room-length excavation, one yard excavation instead of a trench running the full lateral.
Written Detection Report
Before we leave, you get a written report documenting the test results, methods used, confirmed leak location, and our interpretation of the failure. That report goes to your plumber for repair planning, your insurance adjuster if you’re filing a claim, and Tualatin Valley Water District if you’re requesting a high-use billing review.
Three Tigard Leaks We Found This Year
These are real job types — addresses and names are composites, but the scenarios reflect actual calls from Tigard homeowners.
Copper Hot Water Line Under Kitchen Slab — Thermal Located It Before Plumber Arrived
A Bull Mountain homeowner called after noticing a warm area on the kitchen tile floor that had persisted for about two weeks. The water bill had risen 22% on the previous cycle. The meter test confirmed active flow with all fixtures shut off. We ran thermal imaging on the kitchen and adjacent hallway — a clear temperature differential showed through the tile surface tracing the path of the hot water supply line from the water heater toward the kitchen sink wall. Acoustic confirmation narrowed the failure to a specific point about 16 inches from the wall connection. The plumber made a single 14-inch saw cut at the marked location. Pipe section replaced. Total floor damage: one cut. Without the thermal scan, the plumber would have needed to trace the line across the entire kitchen floor to find it.
Galvanized Cold Supply Line — Pinhole at Transition Fitting to Copper
A Metzger-area homeowner on city water (Tualatin Valley Water District) received a high-use notification for a billing period that showed nearly double normal consumption. Interior fixtures looked fine. The meter test confirmed active flow. Zone isolation pointed to the cold supply side in the original galvanized portion of the system. Pressure testing isolated the failure to a transition fitting where the original galvanized line connected to a copper replacement section added in the 1980s — a common failure point as dissimilar metals corrode at the connection. The fitting was in a wall near the utility room, accessed through one small wall opening. No slab work required. Homeowner submitted the detection report and plumber invoice to Tualatin Valley Water and received a billing adjustment for the affected period.
Yard Lateral Failure — Compression Fitting 8 Feet From Foundation
A Summerfield homeowner reported a persistently wet area in the front lawn during August despite no recent irrigation or rain. The meter test showed flow even with the house supply valve shut, confirming the leak was in the service lateral between the meter and the foundation. Acoustic tracing along the lateral identified the breach about 8 feet from the foundation wall at a compression fitting that had shifted — likely from soil settlement over several winters. Targeted excavation at the marked point. Single fitting replaced. The homeowner had been told by a neighbor they might need the entire lateral replaced — the precise location saved that cost entirely.
What Tigard Homeowners Say
“Water bill spiked 25% and I couldn’t figure out why — everything inside looked normal. They came out same day, ran the thermal scan on the kitchen floor, and found the hot water line was leaking right under the tile. Plumber opened one spot, fixed it, done. Saved me from tearing up the entire floor guessing.”
“Had a green wet patch in the yard for about three weeks. They traced the service lateral acoustically and found the fitting failure eight feet from the house. One dig, one repair. The written report was exactly what Tualatin Valley Water needed for the billing review. Really professional operation.”
“1962 house in the Metzger area, still had some of the original galvanized lines. Bill doubled one month. They isolated the problem to a transition fitting in the utility room wall. Small opening, fitting replaced. Got the billing credit back from the water district. Would absolutely call again.”
Tigard Service Area — Every Neighborhood
We cover all of Tigard and the surrounding Washington County communities — same-day availability most days of the week.
Bull Mountain
Higher elevation, slab era
Metzger
1960s galvanized/copper
Summerfield
1970s–80s slab homes
Brittany Square
Mixed slab era
Durham Road Corridor
Commercial + residential
Fanno Creek Area
Soft soil lateral risk
Tualatin (adjacent)
Adjacent service
Lake Oswego (adjacent)
Adjacent service
Beaverton (adjacent)
Adjacent service
King City
Included in service area
Leak Detection Tigard — Questions We Hear Most
Leak Detection Tigard — Find It Today, Protect the Structure.
Whether your Tigard home has a slab copper failure under the kitchen, a yard lateral breach near the foundation, or an aging galvanized system in the Metzger area, we locate the source before any wall opens or any concrete breaks. Same-day service across Tigard and Washington County — and a written report your plumber and your water utility can actually use.
Same-day available · Washington County · CCB Licensed Oregon · 7 days a week