Leak Detection in Ottawa

How a Hidden Leak Gets Found Without Demolition

A hidden leak is located by narrowing it down before anything is opened up, not by guessing at drywall. The sequence is isolation first, then listening. We shut the fixtures, read the water meter, and watch whether it keeps turning: a meter that creeps with everything closed proves water is escaping somewhere on the private side. From there we isolate zones by closing valves section by section until the meter stops, which tells us which run of pipe is losing water. Only then do we bring in acoustic listening gear and thermal imaging to pin the spot down to a small area, so the opening is a patch instead of a project.

By build era

Where the Leak Hides Depends on the House

Where the leak hides depends heavily on how the house was built. In the pre-war core, in Centretown, Sandy Hill, the Glebe and Lowertown, supply runs are often original or partly replaced, buried in plaster and lath, and the first sign is usually a stain on a ceiling below rather than anything audible. In the 1950s to 1970s suburbs across Nepean, Alta Vista and parts of Gloucester, galvanized supply lines corrode from the inside and let go as a pinhole, often at a threaded joint inside a wall cavity. Newer builds on PEX rarely leak in the middle of a run, but they do leak at fittings and at the manifold. Slab and under-floor leaks turn up in additions, converted garages and finished basements where the line was run in or under the concrete.

The Water Bill Spike, Diagnosed

The most common reason people call is a water bill that jumped without any change in how the household uses water. That is a useful diagnostic in itself, because the size of the jump hints at the size of the leak. A running toilet flapper wastes a startling amount and costs nothing to fix, so we rule that out first by dye-testing every tank in the house. If the toilets are tight and the meter still moves overnight with the main fixtures untouched, the loss is in the supply piping, in an irrigation line, or in the buried water service between the street and the house. An underground service leak often shows no interior sign at all, which is why the meter test matters more than walking around looking for damp. You can reach us for any of this through our Ottawa plumbing home page or by phone.

Why a Small Leak Should Not Wait in This Climate

Waiting on a small leak is expensive in a way that is easy to underestimate. Water escaping inside a wall cavity soaks insulation and framing continuously, and in Ottawa the freeze and thaw cycle turns a slow leak near an exterior wall into a burst when the wet section drops below freezing overnight. Damp framing invites mould long before anything is visible from the room side. On the supply side, a pinhole in a corroded galvanized line is very rarely the only weak point, so the honest conversation after locating one is whether to patch that spot or plan a staged repipe of the run. We give you the location, what the pipe looks like where we opened it, and both prices, and you decide which one makes sense.