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Leak Detection & Repair in Kitchener, Waterloo & Cambridge

Locate hidden leaks accurately, then fix them with minimal damage.

Leak Detection & Repair — Flowline Plumbers

Not every leak announces itself with a puddle on the floor. A supply line inside a wall, a fitting under a slab-on-grade bath, or a slow toilet flapper can run up your water bill for months while mould grows out of sight. In Waterloo Region's older housing stock, we see meter spins with everything off, warm spots on concrete, and musty basements long before drywall is visibly stained.

Flowline combines isolation testing, pressure holds, acoustic listening, and targeted access to find leaks without tearing out entire rooms speculatively. Once located, we repair with code-approved materials and leave a clear patch list if finish carpentry is separate.

Early detection is cheaper than cabinet replacement, subfloor repair, and insurance deductibles. If your bill jumped with no change in habits, that's worth a call.

Signs you need leak detection & repair

  • Water bill spike with normal household use
  • Water meter movement when all fixtures are off
  • Damp drywall, baseboards, or flooring without an obvious source
  • Musty odour in basement or behind vanities
  • Warm or dark patches on concrete near hot water lines
  • Persistent low pressure in one zone of the house

Process

What's included / our process

  1. 01

    Review bill history, meter test results, and visible stains; map fixture shutoffs.

  2. 02

    Systematic isolation — by zone or fixture — to narrow supply vs drain leaks.

  3. 03

    Quoted flat-rate detection and repair scope before opening finishes.

  4. 04

    Repair, pressure test, dry-out guidance, and recommendations if mould remediation is needed.

Why Flowline for leak detection & repair

  • Diagnostic-first approach — less destructive exploration
  • Licensed repair following detection, not a separate contractor handoff
  • Experience with post-war splits and infill homes around the tri-cities
  • Flat-rate transparency on both detection and fix

Related services

Serving Kitchener · Waterloo · Cambridge · Guelph · Woodstock · Stratford.

EST. 2003

Got a plumbing problem? We'll fix it right.

Frequently asked questions

Can you find leaks without cutting walls?
Often we narrow location with shutoff tests and equipment before a small, targeted opening. The goal is one precise access point, not exploratory demolition.
My meter spins — is that definitely a leak?
Usually a supply-side leak or a running toilet. We verify with a controlled shutoff test and isolate the circuit.
Do you repair slab or in-floor leaks?
We repair accessible lines and coordinate reroutes when under-slab replacement isn't practical. Options are explained with cost trade-offs.
Is leak detection covered by insurance?
Some policies cover tracing but not repair — check your policy. We provide clear invoices describing diagnostic vs repair work.