Leak Detection in Northwood
Northwood has big detached houses on the Copse Wood side and 1930s semis in Northwood Hills, where we recently traced a leaking joint hidden inside a wall.

Leaks in Northwood homes
Northwood is one of the larger-house areas of north west London, with substantial detached homes around Copse Wood Way and Eastbury, alongside 1930s semis towards Northwood Hills and Pinner. The bigger houses have several bathrooms stacked over reception rooms and long pipe runs, and many have been rebuilt with underfloor heating.
In Northwood we were called to a leak that was staining a wall with no visible source. The tracer gas detector, working at a window sill along the pipe run, found the gas escaping at a joint inside the wall. A small opening exposed the joint, which had corroded and was weeping, and it was repaired with the staining and cause photographed for the report.
Most roads have easy parking. Our report sets out cause, location and the extent of the damage, with readings and photographs, in the form insurers expect for trace and access claims.
Leaks we have traced here


What we detect in Northwood

Water leak detection
Hidden leaks behind walls, under floors and in ceilings, pinpointed with thermal, acoustic and tracer gas kit before anything is opened up.
Water leaks
Tracer gas leak detection
A safe hydrogen and nitrogen mix is put into the drained pipe, rises through the floor or wall and is picked up by the detector directly above the leak.
Tracer gas
Central heating leak detection
A boiler that keeps dropping pressure means water is escaping somewhere in the heating circuit. We find the pipe or fitting and fix it.
Heating leaks
Underfloor heating leak detection
A leaking underfloor heating loop is found by isolating circuits at the manifold, then mapping the pipes with thermal imaging and tracer gas.
Underfloor heating
Trace and access insurance reports
Leak detection carried out and documented the way insurers expect, with a report your claims handler can act on straight away.
Insurance reportsFrom your first call to a leak you can see in the report
Call or WhatsApp with a few photos and a line about the symptoms. We ask a handful of questions, agree a fixed price and book the survey, usually for the same or the next day.
On arrival we pressure test the mains, hot water and heating, check the meter and test the escaping water, so we know what we are looking for before the detection starts.
Thermal imaging, the acoustic ground microphone and tracer gas are used as the pipework dictates until the leak is marked on the floor or wall.
You get a written report with readings, thermal images and photographs, ready for a trace and access claim. If you want the leak fixed, we open that one spot and repair it.
Leaks in Northwood: questions answered
Can you find a leak inside a wall without taking the plaster off?
Yes. Thermal imaging and tracer gas show where the leak is through plaster and tiles. We open one small area at the exact spot for the repair.
Do you cover Northwood Hills and Moor Park?
Yes. All of HA6 plus Moor Park and Eastcote.
How quickly can you attend in Northwood?
Same or next working day in most cases. It is a short drive from Watford.
Will you photograph everything for my insurer?
Yes. Before, during and after, with the readings, so the claim is straightforward.
Suspect a leak in Northwood?
Call now and we will tell you straight away whether it needs a same-day visit. Or send a photo of the stain, the meter or the boiler gauge on WhatsApp.
07516 755 680


