AK Plumbing London
Water leak detection in London
Damp patches, unexplained water use or a heating system losing pressure can need a structured leak investigation. Tell AK Plumbing what you have noticed and where, then confirm coverage, investigation scope and appointment availability for your postcode.
Have your postcode and a short description ready. Confirm availability, the visit charge and any additional work before booking.
Request a leak investigation callback
Before arranging a visit
If water is spreading rapidly, use the known water stop tap only if it is safe and accessible. Keep away from wet electrical fittings and sagging ceilings. Do not touch wet switches or enter standing water to reach a control. Tell us about an active escape of water when calling.
Start with the symptom and the system
Damp ceilings or walls
The visible stain is not necessarily the source. Water can travel along joists or pipework; roof ingress, condensation and plumbing leaks can look similar. Note whether the patch changes after rain, heating or use of a bathroom.
Heating pressure falling
A leak in the heating circuit is one possibility, but boiler components or discharge can also cause pressure loss. Record when pressure falls and whether visible radiator joints are wet. The first task is deciding which part of the system needs investigation.
Unexplained water use
A running toilet, appliance or visible fitting may explain consumption without specialist tracing. If you have safe access to the meter, record the readings and whether water was being used. Meter evidence alone does not locate a concealed leak.
How a focused investigation works
Agree the scope before testing
Explain the symptoms, affected rooms, previous repairs and any accessible pipe routes. Confirm whether the enquiry concerns a domestic supply, heating circuit or waste pipe. Communal systems and external pipes can require access or authorisation from another party.
Choose methods to suit the evidence
Visual inspection and accessible checks may come first. Moisture readings, thermal imaging, acoustic methods or other testing may help in suitable conditions, but no single method works for every pipe or leak. Confirm which equipment is appropriate and available for the appointment.
Agree access before opening surfaces
An investigation may narrow a location without proving the exact fitting until access is opened. Ask how proposed access will be discussed and authorised. Non-invasive checks can reduce unnecessary opening but cannot promise that no disturbance will be needed.
Detection, repair and reinstatement are different scopes
Understand the investigation charge
Ask what time or testing is included, the VAT treatment, any additional charge and what happens if the cause remains uncertain. Do not assume a fixed visit includes unlimited investigation or a guaranteed find.
Plan the repair separately
Locating a leak does not always mean it can be repaired during the same appointment. Access, materials and permissions may require another visit. Ask whether isolation, access, repair, testing and temporary protection are included in the proposed work.
Check reports and insurance first
If you need a written report, confirm its contents before booking: observations, tests, photographs, likely source and limitations. Ask your insurer about authorisation and policy requirements. Detection, pipe repair and making good are not automatically covered by insurance.
Questions before booking
Can you guarantee finding a leak without opening a floor?
No blanket guarantee is made. The pipe material, depth, access and leak behaviour affect what can be established. Agree a staged approach and the permission needed before invasive access.
Do I need specialist detection for a visible leaking tap?
Usually the visible fault can be assessed as a plumbing repair. Explain where the water is escaping so the enquiry can be directed appropriately.
Will a thermal camera show every leak?
No. Thermal imaging shows temperature patterns, which need interpretation and supporting checks. It cannot see through every surface or prove the source of every damp patch.
What information helps before the visit?
Provide the postcode, location and timing of symptoms, recent plumbing work, whether the leak is active, and any access restrictions. Photographs may help once the booking team confirms how to share them.
Related help
Request a leak investigation callback
Tell us what is happening and where the property is. Call for current availability or send the form above to request a callback.