Leak Detection Guide

How Long Does Leak Detection Take? What to Expect During an Inspection

Quick answer: A standard residential leak detection appointment typically takes one to two hours, though this varies by leak type — a straightforward slab leak with acoustic equipment can be quicker, while a sprawling underground main line survey can take longer. Here's what actually happens during that time, step by step.

Step 1: Initial Conversation and Symptom Review

The technician starts by asking about what you've noticed — where, when, and how the symptoms show up — since this narrows down likely leak locations before any equipment comes out.

Step 2: Equipment Setup

Depending on the suspected leak type, the technician sets up acoustic listening equipment, a thermal imaging camera, a sewer camera, or pressure testing gear. Setup itself is usually quick, often just a few minutes.

Step 3: The Actual Search Process

This is the bulk of the appointment — systematically checking likely locations based on your symptoms and the property's layout, narrowing down from a general area to a specific, confirmed point.

Step 4: Marking and Confirming the Leak Point

Once the equipment pinpoints a location, the technician confirms it, often cross-checking with a second method, then marks the exact spot so any repair work only needs to open up that specific area.

Step 5: The Diagnostic Report

You receive a written report describing what was found and where, which you can hand directly to a repair contractor, your insurance company, or use for your own records — useful because it removes the guesswork from whatever comes next.

Factors That Can Make It Take Longer

Multiple possible leak sources, a large or complex property layout, difficult-to-access crawl spaces or finished areas, and leaks with unusually faint or intermittent symptoms can all extend an inspection beyond the typical range.

Frequently asked questions

Do I need to be home during the whole inspection?

It's recommended, since the technician may need access to different areas of the home and it helps to discuss findings on the spot, but requirements can vary by situation.

What if the leak isn't found in the estimated time?

A good technician will explain what's been ruled out and what the next steps are, rather than stopping the search prematurely — some leaks genuinely take longer to pin down than others.

Can detection happen the same day I call?

Often yes — same-day appointments are commonly available, particularly for symptoms that suggest an active, worsening leak.