24/7 EMERGENCY
Burst pipe? Boiler down? No hot water? Engineers on call right now —
Mon–Fri 8am–6pm · Sat 9am–5pm ·
Emergency line open 24/7
Gas Safe Reg: 123456
Trustpilot 4.9★
24/7 EMERGENCY
Burst pipe? Boiler down? No hot water? Engineers on call right now —
Emergency line open 24/7
Gas Safe Reg: 123456
Trustpilot 4.9★
We trace hidden and underground leaks across Harrow — from unexplained high water bills in Pinner to damp patches with no obvious cause in Wealdstone and Stanmore. Non-invasive acoustic, thermal and tracer gas detection, pinpointing the exact source before any repair work is agreed, at a fixed price with no call-out charge.
HA1
HA2
HA3
HA5
🔒 No obligation. Fixed price confirmed before any work starts.
Trustpilot rating 1,800+ verified reviews
Hidden leaks rarely announce themselves clearly — these are the signs our engineers are called out to investigate most often across Harrow.
A noticeable jump in your water bill with no change in usage often points to a leak on the supply pipe between the meter and the property, common across Harrow’s older housing stock.
A damp patch on a wall or ceiling away from any bathroom or kitchen is a strong indicator of a hidden pipe leak within the structure, particularly in Pinner and Stanmore’s period homes.
If your water meter continues to register usage with every tap and appliance turned off, there’s a leak somewhere in the system, either inside the property or on the supply pipe.
A persistent musty smell or mould appearing in an unexpected location often indicates ongoing moisture from a hidden leak rather than simple condensation.
Precise, non-invasive detection first, so any repair work targets the actual leak rather than guesswork.
Your engineer reviews the symptoms — water bills, damp patches, meter readings — to narrow down whether the leak is likely internal or on the underground supply.
Acoustic listening equipment, thermal imaging and tracer gas are used as appropriate to pinpoint the leak without unnecessary digging or opening up walls and floors.
Once narrowed down, the precise leak location is marked and confirmed, minimising the access needed for any repair.
You receive a clear report with the leak location and photographic evidence, along with a fixed-price recommendation for the repair itself.
An undetected leak keeps costing money and causing damage for as long as it goes unresolved.
An underground supply leak continues to run up your water bill every single day it goes undetected, often unnoticed until a bill arrives significantly higher than usual.
A slow, hidden leak gradually damages timber, plasterboard and flooring, turning a straightforward repair into a much larger structural job the longer it continues.
Precise detection means repairs target the exact leak location, avoiding the cost and disruption of guesswork digging or opening up multiple sections of wall or floor.
A documented leak detection report is often required to support a claim with your insurer or, for supply pipe leaks, your water company.
Cost depends on whether the leak is internal or on the underground supply, and the detection methods needed. All prices confirmed before we attend — no call-out charge.
Internal leak, acoustic and thermal detection
Between the meter and the property
For hard-to-locate hidden leaks
Detection plus minimal access to confirm
Quoted after leak location confirmed
For insurance or water company claims
Fast arrival across all Harrow postcodes without the delays of London-wide dispatch, from Harrow-on-the-Hill to Pinner and Stanmore.
Acoustic listening equipment, thermal imaging cameras and tracer gas kits are carried as standard, so the right method is used for each situation.
Harrow-on-the-Hill and Pinner's period properties often have original underground supply runs, a common source of slow leaks we regularly diagnose.
Every survey includes a written report with photographic evidence, ready to support an insurance or water company claim if needed.
The same fixed pricing applies whether you're in HA5 Pinner or HA3 Wealdstone — no zone uplift, no call-out charge, no extras added after the fact.
Any follow-up repair work carried out in Harrow carries our 12-month guarantee, issued in writing on completion.
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“Water bill had nearly doubled with no explanation, water company suggested a supply pipe leak. Detection found it within the garden between the meter and the house, repaired the same week.”
“Damp patch kept appearing on the hallway ceiling with no bathroom anywhere near it. Thermal imaging found a hidden pipe leak in the floor void above, fixed with minimal disruption to the ceiling.”
“Meter kept ticking over even with the whole house’s water off overnight. Turned out to be a slow leak on the supply pipe, found accurately without digging up half the front garden.”
Fixed price agreed before we start. Gas Safe registered engineers. Most installations completed in a single day.
We also cover these neighbouring boroughs — same fixed prices, same-day availability.