Leak DetectionIn Manchester —Found Before It Spreads

The first question is always which system. A sealed heating system that loses pressure is leaking heating water — often visible as staining on radiator valves or as a slight discolouration where it dries. A mains supply leak shows on the water meter with everything closed. Waste leaks appear only when an appliance discharges, which is why they are so often intermittent and blamed on condensation.

Isolating sections and watching pressure or the meter over a period tells us far more than looking at the damp patch does. Only once the system is identified does location work begin.

Moisture meters map the extent and gradient of dampness in a floor or wall, which usually points uphill towards the source. Thermal differences are useful on heating and hot water leaks because escaping hot water warms the surrounding structure in a pattern that does not match the pipe layout.

Pressure testing isolated sections confirms which run is failing. Acoustic listening is used on mains supply leaks under solid floors, where escaping water under pressure creates a detectable sound at the point of escape.

For underfloor heating, individual loops are isolated at the manifold and pressure tested one at a time, so a leak can be attributed to a single circuit before anything is cut. That alone often reduces the search area by ninety per cent.

Compression joints buried under floors that have relaxed over decades, corroded steel pipework in older systems, and radiator valve spindles weeping slowly are the three most common heating leaks we find. On supply pipework, it is failed push-fit joints installed without full insertion, and copper pinholes where pipe has been in contact with damp screed or aggressive materials.

Cylinder and boiler-side leaks are frequently not pipe at all — a passing pressure relief valve discharging outside looks exactly like a leak because pressure keeps falling, and a failed expansion vessel causes exactly that. Checking the discharge before opening a floor has saved more than one customer an unnecessary excavation.

Nail and screw penetrations from flooring or carpet gripper work are a recurring cause, particularly where a leak begins shortly after building or decorating work.

Where a joint has failed, it is remade properly in the correct material rather than clamped. Where pipe has corroded or been penetrated, the affected section is cut out and replaced, and the surrounding run inspected while access exists — if one buried compression joint has failed, its neighbours deserve a look.

On underfloor loops, a repair is made with an approved coupling in an accessible position or, where the damage is close to the manifold, the loop can sometimes be re-terminated. Whole-loop replacement is a last resort, not a first suggestion.

After any heating repair the system is refilled, vented and dosed with inhibitor, then held at pressure and re-checked. A repair is not finished until pressure has been shown to hold.

Many home insurance policies include cover for trace and access — the cost of finding and getting to a leak, and making good afterwards. Insurers generally want evidence of what was found and where. We provide a clear account of the investigation and the repair so you have something to submit.

It is worth checking your policy before assuming the cost is entirely yours, particularly where a leak has caused damage to floors or ceilings.

In rentals, a leak reported by a tenant needs acting on quickly — both because damage escalates and because the obligation sits with the landlord. We arrange access directly with tenants and report findings back to the landlord or agent.

Leaks in flats carry the extra complication of affecting a neighbour below. Tracing accurately matters even more there, since the source is often in a different property entirely.

If water is actively running, close the stopcock. If it is a heating leak, turn the heating off and, where it is safe to do so, isolate the affected radiator with its valves. Put something under the leak, move what can be moved, and ring 07398 230231 — leaks are treated as emergencies and the phone is answered anytime.

Do not add leak-sealer additive to a heating system before it has been looked at. It can mask a leak temporarily, and it complicates later repairs and can block components in the boiler.