Commercial leak detection & repair · Bothell, WA
Wet ceiling tiles, a water bill that suddenly jumped, water at the base of the storefront glass. One call connects your building with a local commercial leak specialist who traces the water with thermal, acoustic and moisture tools before anything gets torn open.
The short answer
Two kinds of specialists do it. Roofing and waterproofing contractors handle water coming in through roofs, walls and glass. Commercial plumbers handle water escaping from supply lines, drains, and heating and cooling pipes.
The hard part is usually knowing which one you need. On a commercial building, water rarely appears where it gets in. It runs along a roof deck, a beam, a conduit or a pipe before it finds a ceiling tile to drip through. Water on the third floor can start at a rooftop unit curb on the far side of the building, which is why commercial roof leak repair begins with a roof survey, not a bucket.
That's why the first visit should be a diagnosis, not a demolition. A good specialist starts with non-destructive tests: moisture meters, infrared cameras, acoustic listening gear, pressure tests and controlled water tests. These narrow down the source before anyone opens a ceiling, saw-cuts a slab or pulls up roofing. Our commercial leak detection page explains each method in plain terms.
Call (425) 358-4365 and describe what you're seeing. You'll be connected with a local commercial leak specialist who works in Bothell. If water is actively moving, say so right away. Many providers keep after-hours crews for emergency commercial leak repair, though availability depends on the provider and the hour.
Services
Six common places to start. Each service has its own page explaining causes, warning signs, safe checks and what the provider's visit looks like.
Most commercial roofs in Bothell are low-slope: TPO, PVC, EPDM, modified bitumen or built-up. They rarely fail in the open field of the membrane. Leaks cluster at the details: rooftop unit curbs, pipe penetrations, drains, scuppers and seams. Specialists survey the whole roof, test the suspect details and repair the actual entry point instead of patching above wherever the drip lands inside. That's the difference between one visit and five.
Not sure if it's the roof, a wall or a pipe? Detection comes first. Providers combine moisture mapping, infrared imaging, acoustic listening, tracer gas and pressure tests to locate the source without opening walls. You get a marked location and, ideally, written findings your insurer, landlord or board can use.
A warm spot on the floor, a meter that keeps turning with every fixture off, or damp carpet tiles nowhere near a sink usually means a pressurized line under the concrete. Specialists isolate and pressure-test each line, pinpoint the leak, then choose a spot repair, a reroute or lining.
Aluminum-framed glass is designed to let a little water in and drain it back out through weep holes. When gaskets shrink, sealant cracks or weeps clog, the water ends up inside. Water testing one section at a time shows which joint is failing, so only that joint gets repaired, not the whole elevation.
Hydronic loops leak quietly. It might be a pinhole in a chilled water line, a weeping valve stem or a corroded coupling above a drop ceiling. Makeup water use creeps up and tiles stain. Specialists rule out condensation, isolate the zone and repair it while the rest of the system keeps running.
A burst supply line, a roof drain backing up during an atmospheric river, water pouring through a light fixture. Shut off the water if you can do it safely, keep people away from wet electrical, and call. The provider's first job is to stop the water and dry in the area. Finding and fixing the cause comes next.
Some leaks are easier to solve with a provider who knows the building type. Kitchens have grease lines, floor sinks and walk-in coolers, so restaurant and commercial kitchen leak repair is scheduled around service. Apartment and condo buildings raise questions about who owns which pipe, which multi-family and HOA leak services help sort out. Warehouses and plants have huge roofs, skylights and process piping, covered under industrial and factory leak repair.
Symptom checker
Filter by where you're seeing the problem. Each symptom links to the service that usually fixes it.
Field guide
A plain-language guide for facility managers, owners and HOA boards.
Almost every commercial leak falls into one of three groups. The group decides who should look at it first.
Water coming in from outside. Low-slope roofs fail at seams, penetrations and drains long before the main membrane wears out. Flat roof patching and membrane repair covers TPO, EPDM and modified bitumen. Metal roof leak repair deals with fasteners, end laps and panel movement. Where the roof meets a wall, parapet and flashing repair is the usual fix. On the walls themselves, window and facade waterproofing handles sealant joints, sills and cladding.
Water escaping from piping. Pressurized lines leak around the clock. That includes the main water service line, domestic risers, lines buried under the floor that need slab leak repair, chilled water and HVAC loops, and cooling towers and boilers. Gravity drains leak only when they're used, so sewer and drain line leaks often show up as odors or settling rather than puddles. Even a running flushometer or faucet is a leak, one that only shows up on the water bill.
Water pushing in from below. Groundwater and surface runoff find cracks, cold joints and form-tie holes. That's the work of concrete and foundation leak repair and garage deck and elevator pit waterproofing.
Pro tip: keep a leak log
Note the date, time, weather and exact spot every time water appears. A leak that shows up only in wind-driven rain points to walls and glass. One that shows up on dry days points to plumbing. That log can save hours of testing.
Detection is a process of elimination, and the right tool depends on what's leaking.
On large or confusing buildings, providers often combine two or three methods before they agree on a source.
Warning: confirm before anyone cuts
Don't let anyone saw-cut a slab, open finished walls or start replacing roofing until a test has confirmed the source. Opening the wrong area wastes money and can void a roof warranty. Ask exactly which test pinpointed the leak.
Once the source is confirmed, the provider should explain the repair options, the access they need, and what the work means for tenants or operations. Common paths:
After the repair, ask for proof: a re-test of the same area, photos of the repaired detail and a short written summary. Then deal with what the water left behind. Wet insulation, drywall and ceiling tiles that stay damp can grow mold, so drying or replacing them is part of finishing the job.
From first call to dry building
Four steps. You decide on every one of them, and nothing is booked without your OK.
Tell us where the water shows up, when it started and what kind of building it is. It takes a couple of minutes.
You're connected with a local commercial leak specialist who handles that kind of problem.
The provider inspects, tests and explains the cause and your options. Ask for findings in writing.
Work starts once you approve the scope and price. A re-test confirms the leak is actually gone.
The cost of waiting
In the Puget Sound region most rain falls between October and March, often as long, steady rain. A leak that drips now and then in September can run for weeks once the wet season settles in.
Water trapped under a roof membrane soaks the insulation board. Wet board loses much of its insulating value and rarely dries out on its own. A small detail repair can grow into replacing a section of the roof.
Ceiling tiles, drywall and carpet that stay wet can start growing mold within 24 to 48 hours. In offices, clinics and apartments, that means tenant complaints, closed rooms and remediation costs.
Steel roof decks, fasteners, rebar and anchors corrode when they stay wet. In parking garages, road salt carried in on tires speeds that up, and concrete starts cracking and spalling.
Many property policies treat sudden water damage differently from long-term seepage. Prompt action and good records generally help a claim, while delay can hurt it. Check your policy or ask your agent.
Pricing factors
Every building is different, so honest providers price a job after they've seen it. These are the factors that move the number most.
| Factor | Why it changes the price |
|---|---|
| Access | Roof height, lifts or scaffolding, ceilings above occupied space, and after-hours work all add labor. |
| Detection needed | A quick visual check costs far less than an infrared survey, acoustic location or water testing across several days. |
| System type | Membrane type, pipe material and diameter, or the curtain wall system decide the parts and methods. |
| Extent of damage | One failed detail versus saturated insulation, corroded pipe runs or a cracked slab. |
| Urgency | Emergency and night response usually costs more than scheduled daytime work. |
| Restoration | Drying equipment, new ceiling tiles and drywall, flooring and mold work are often priced separately. |
| Permits & shutdowns | Permitted work, water or fire system shutdowns and tenant notices add coordination time. |
Ask for a written estimate that separates detection, repair and restoration, and lists what's excluded. It makes quotes easier to compare and helps your insurer or board review them.
Service areas
Bothell spans King and Snohomish counties, and the buildings change from one side of town to the other. So do the leaks.
Office, lab and light-industrial campuses with large low-slope roofs and lots of rooftop mechanical equipment. Roof drains, unit curbs and chilled water lines top the list. See leak repair in Canyon Park.
Older Main Street storefronts and masonry parapets sit beside newer mixed-use buildings with podium garages. Restaurants add kitchen plumbing to the mix. Read about downtown Bothell leak repair.
Retail centers and apartment and condo communities in north Bothell, where storefront roofs, shared plumbing and unit-to-unit leaks are typical calls. See Thrasher's Corner leak help.
Business-park offices along North Creek Parkway, many with curtain walls and storefront entries, in a creek valley where groundwater matters below grade. More on North Creek leak services.
Hillside condo and HOA communities west of downtown. Slope drainage against foundations, balconies and stacked plumbing drive many of the leak calls. Details on Westhill leak services.
The Bothell Way NE (SR 522) corridor toward Kenmore, with roadside retail, restaurants and apartments. Sewer laterals and small flat roofs are the usual concerns. See West Bothell leak repair.
Established neighborhoods with HOA communities, clubhouses and smaller office buildings. Long private service lines, irrigation and older low-slope roofs are common leak sources. More on Queensgate leak help.
A hillside area of homes, HOAs and community buildings such as churches and schools. Steep lots push groundwater toward foundations, and long service lines can leak unnoticed. See Norway Hill leak services.
Before work starts
Commercial work carries more risk than a house call: bigger roofs, occupied buildings, tenants, warranties and insurance requirements. Whoever comes out to your building, a few quick checks protect you before anyone climbs a ladder or opens a ceiling.
A good specialist answers these without hesitation and puts the scope in writing. If you want to know more about who we are, read about Bothell Leak Pros.
Guides
Our free guides walk through the questions property managers ask most, from how to find a leak in a commercial building to what a sudden high water bill usually means.
Good questions
What Bothell property managers, owners and HOA boards ask most before they call. Don't see yours? Ask on the phone.
Watch when it happens. A leak that appears only during or after rain is almost always the roof, walls or glass. One that appears in dry weather, or while the water meter moves with every fixture off, points to plumbing. Some buildings have both at once.
Usually, yes. Moisture meters, infrared cameras, acoustic equipment, tracer gas and pressure tests can narrow a leak down to a small area. Some access is often still needed for the repair itself, but it should be small and targeted.
It depends on the building, the access and which methods are needed. Checking a single roof detail costs far less than a full infrared roof survey or tracing several lines under a slab. Providers quote once they understand the problem.
Many commercial leak providers offer after-hours emergency service. Call (425) 358-4365 any time and describe the situation. Availability depends on the provider and the hour, so if water is moving, shut it off and protect equipment while you wait.
It can if the repair doesn't meet the manufacturer's requirements. If your roof is under warranty, tell the provider up front, and check whether the manufacturer requires an authorized contractor or needs to be notified first.
Report sudden water damage promptly, and document everything: photos, video, the confirmed cause and every invoice. Insurers generally expect you to stop further damage right away. Coverage varies by policy, so check yours or ask your agent.
Yes. Calls from anywhere in Bothell are routed to providers who cover that area. That includes Canyon Park and Thrasher's Corner on the Snohomish County side, and Downtown, Westhill and Norway Hill on the King County side.
Often, yes. Many commercial providers can work early mornings, evenings or weekends for restaurants, shops and offices. They can also stage the work so only part of the building is affected at a time. Ask when you schedule.
Start with the lease or the HOA's governing documents. They usually define who maintains which pipes and building parts. The provider can document the source so it's clear who's responsible.
Contain the water and keep the area safe. Close the zone or main valve for a pipe leak, move inventory and electronics, set out buckets, and keep people away from wet electrical. Photograph everything before cleanup starts.
Water where it shouldn't be?
Describe what you're seeing. You'll be connected with a local provider who can tell you the next step.
(425) 358-4365Free call. No obligation. Commercial, multi-family and HOA properties in Bothell, WA.