If you’ve been told you need a plumbing camera inspection — or if you’re considering one as a proactive measure before buying a home or after a recurring drain problem — you may be wondering what the process actually involves and whether it’s worth the investment. This guide explains exactly what a drain camera inspection shows, when it’s most valuable, and what happens after the inspection is complete.

The Technology

A plumbing camera inspection involves feeding a flexible, waterproof camera on a long cable through your home’s drain pipes. The camera transmits a live video feed to a monitor that your plumber watches in real time. The cable is marked at regular intervals so the plumber knows exactly how far the camera has travelled and can pinpoint the location of any issue with precision.

Modern inspection cameras used by ExpressRooter produce high-definition colour video that clearly reveals the interior condition of pipes — including material, diameter, condition, and any obstructions or damage. The entire inspection is typically recorded and can be provided to the homeowner as a file for reference.

What the Camera Reveals

Root Intrusion

Tree and shrub roots are drawn to the moisture and nutrients inside sewer pipes. They enter through even hairline cracks or loose joints and, once inside, grow rapidly — eventually blocking the pipe entirely or causing structural damage that leads to collapse. Root intrusion is one of the most common findings on camera inspections in established GTA neighbourhoods where mature trees are common. Catching it early allows for clearing and repair before a complete blockage or pipe failure occurs.

Pipe Condition and Material

The camera clearly shows the material and condition of your pipes. Homes built before the 1970s across much of the GTA were originally plumbed with clay tile sewer laterals, which have a lifespan of 50–100 years. If your home still has original clay pipe, the camera will reveal whether it’s in acceptable condition or showing cracks, offsets, and deterioration that put it at risk of failure.

Blockages and Buildup

Grease accumulation, sediment deposits, non-flushable debris, and partial blockages from a variety of sources are all clearly visible on camera. The inspection tells you not just that a blockage exists but what the blockage is made of, how severe it is, and exactly where it is in the pipe — information that allows the plumber to choose the most effective clearing method.

Pipe Offsets and Joint Failures

Ground movement — from freeze-thaw cycles, soil settlement, or nearby construction — can cause pipe sections to shift out of alignment. When this happens, joint connections separate and create ledges where debris catches and accumulates, and gaps where root intrusion begins. Camera inspection is the only way to identify pipe offsets without excavation.

Collapsed Sections

In severe cases, particularly in older clay tile or cast-iron pipe, sections may partially or fully collapse under the weight of soil above them. Camera inspection identifies collapsed sections and their exact location, allowing for targeted repair rather than guesswork about where to excavate.

When Is a Camera Inspection Worth It?

A camera inspection is most valuable in the following situations:

• Recurring drain backups that clear with snaking but return within weeks or months — suggesting a structural problem rather than a simple blockage
• Before purchasing a home — the visible sewer lateral is not included in a standard home inspection and a camera inspection is the only way to know what you’re buying
• Homes over 30 years old that have never had a camera inspection
• After a confirmed root intrusion to assess the extent of the problem
• As part of an annual or bi-annual home maintenance program for older properties

What Happens After the Inspection?

After the camera inspection, ExpressRooter provides a report and video of the findings. If the inspection reveals a problem, the plumber will explain the options — which typically range from high-pressure hydro jetting to clear blockages, to pipe relining for structural issues, to targeted excavation and repair for collapsed or severely damaged sections. If the inspection finds no significant issues, you have documented proof of your drain system’s condition and a baseline for future comparison.

ExpressRooter currently offers $150 off a main sanitary line camera inspection for GTA homeowners booking online. This brings the cost of a thorough inspection to $200 — a fraction of the cost of dealing with a sewer backup or emergency excavation after a pipe failure.