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Gas leak detection & repair in Macclesfield

In short

If you can smell gas now, call the National Gas Emergency Service on 0800 111 999 before reading any further — they attend free, 24 hours, and make the installation safe. Once the supply is isolated, a Gas Safe registered engineer traces the leak with a tightness test and leak detection fluid, repairs it, and recommissions the appliances.

Also called: gas leak in house · smell of gas from boiler · gas tightness test · gas pipe repair

Signs you need this

  • Any smell of gas, however faint
  • A hissing sound near pipework, the meter or an appliance
  • A gas bill that has risen with no change in use
  • Dead vegetation over a buried gas supply run outside
  • Physical damage to pipework after building work

The emergency service isolates; it does not repair. That distinction matters, because a household whose gas has been capped often assumes the visit fixed the problem. It did not — it made the situation safe. Restoring the supply requires the fault to be found, repaired and tested by a Gas Safe registered engineer, and the number to call in the first instance is always 0800 111 999.

Leak location starts with a tightness test at the meter, which establishes whether the installation as a whole is holding pressure. From there the installation is divided and tested section by section, and suspect joints are tested with leak detection fluid — the same principle as finding a puncture, and just as decisive. Electronic gas detectors help locate leaks in inaccessible runs.

The usual failure points are joints that have been disturbed, old compression fittings, flexible cooker hoses past their service life, threaded steel connections where the jointing compound has hardened, and corrosion on pipework running through damp areas such as under a floor or against an external wall. Corrosion is the one that recurs: repairing one pinhole in a corroded run often just moves the problem along the pipe, and the honest answer may be to replace the section.

Once repaired, the whole installation is tightness tested again, every appliance is relit and checked for correct combustion, and the work is recorded. Appliances are never left lit and unchecked after gas work.

Prevention is mostly about servicing and about not disturbing things unnecessarily. The other common-sense measure is a carbon monoxide alarm in any room with a combustion appliance — CO has no smell, so unlike a gas leak it gives you no warning at all without one.

What the job covers

  • Tightness testing of the whole installation at the meter
  • Section-by-section isolation and leak location
  • Leak detection fluid and electronic detection on suspect joints
  • Repair or replacement of failed joints, hoses and corroded pipework
  • Full retest and appliance recommissioning
  • Written record of the work carried out

What it costs

We don't publish a price for this yet, because a number pulled out of the air is worse than no number at all — your plumber has to honour it. You'll get a firm price for your actual job when they ring you back, before any work starts. The quote itself is free and there's no obligation either way.

Common questions

Does the emergency service fix the leak?

No. They attend free and make the installation safe, usually by isolating the supply or capping an appliance. Repair and recommissioning is separate work by a Gas Safe registered engineer.

What does a tightness test involve?

The supply is isolated at the meter and the pressure in the installation is monitored over a set period. If it drops, gas is escaping somewhere in the system, and the installation is then divided and tested to narrow down where.

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