Leak Detection in Hendon and Mill Hill
Hendon has Edwardian and 1930s semis and mansion blocks, while Mill Hill is full of rebuilt detached houses with underfloor heating, a common source of pressure loss.
Leaks in Hendon and Mill Hill homes
Hendon has Edwardian and 1930s semis around the Burroughs and Hendon Central, with inter-war mansion blocks and a wave of new flats at West Hendon and Brent Cross. Mill Hill is different again: large detached houses, many rebuilt or heavily extended in recent years with underfloor heating in the ground floor screed, and new-build estates at Mill Hill East. Underfloor heating loops are a frequent cause of pressure loss in these rebuilt houses, and the leak is often a single fitting at the manifold or a fixing driven through a pipe.
We cover NW4 and NW7, including Hendon, West Hendon, Brent Cross, Mill Hill, Mill Hill East and Mill Hill Broadway. Typical calls are a boiler losing pressure in a house with underfloor heating, a warm patch on a tiled floor, and a ceiling stain in a mansion block. For underfloor heating we isolate each loop at the manifold, pressure test it and use the thermal camera to see where the heat is escaping. Conventional heating circuits get tracer gas, and bathrooms in flats are settled with dye tests and moisture readings.
Much of Hendon near the stations and the Burroughs is permit controlled, and the new estates have barrier parking, so we arrange access in advance. Mill Hill houses mostly have driveways. The equipment comes in on a trolley, so one space near the door is all we ask for. The survey ends with a written report containing photographs, thermal images and the pressure readings for each loop, prepared so your insurer can assess a trace and access claim.
What we detect in Hendon and Mill Hill
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
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
Thermal imaging leak surveys
A thermal imaging camera shows warm pipe runs and cool wet patches through floors and walls, so the leak is seen before anything is opened.
Thermal imaging
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
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 Hendon and Mill Hill: questions answered
How quickly can you get to Hendon or Mill Hill?
Usually the same or next working day. Both are a short drive from Watford, and Mill Hill in particular is often on our way to other jobs.
Which neighbourhoods do you cover?
All of NW4 and NW7: Hendon, West Hendon, Brent Cross, Mill Hill, Mill Hill East and Mill Hill Broadway.
My house in Mill Hill was rebuilt with underfloor heating. Can you find a leak without lifting the floor?
Usually, yes. Isolating the loops at the manifold tells us which one is losing pressure, and the thermal camera shows where the heat is leaving the pipe. Any opening is then small and in the right place. If a loop cannot be located non-invasively, we say so.
Does trace and access cover underfloor heating?
Most buildings policies cover locating a hidden leak and making good the floor opened to reach it. The pipe repair itself is usually not covered. Our report keeps the three parts separate so the claim is clear.
Suspect a leak in Hendon and Mill Hill?
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