
Leak detection
Thermal imaging surveys across London
Specialist thermal imaging surveys as part of our 24/7 leak detection service. Same fixed pricing, same 30 to 60 minute target response, same 12-month guarantee.
Thermal imaging is the single most powerful tool we use to find hidden water leaks. By visualising tiny surface-temperature differences invisible to the human eye, a properly trained operator using a calibrated FLIR camera can locate active hot-water leaks, central heating system leaks, underfloor-heating failures and evaporative cooling from cold-water leaks, usually pinpointing the source to within 100mm before any plaster, tile or floorboard is lifted.
Our leak-detection team uses FLIR E76 / E96 cameras with thermal sensitivity below 30mK (millikelvin) and 640×480 IR resolution, the same equipment used by buildings surveyors, insurance loss adjusters and the British Damp Proofing Association. Every survey includes high-resolution IR images, surface temperature profiles, and a written report acceptable to all major UK insurers.
Where this service applies
- ✅ Active hot-water leaks under floors, clearly visible as warm plumes against cooler surrounding surface
- ✅ Central heating system leaks (radiator valves, pipework, manifolds, pumps)
- ✅ Underfloor heating circuit failures and screed cracking
- ✅ Evaporative cooling from cold-water leaks behind tiles or wall finishes
- ✅ Damp / moisture mapping post-leak (where water has spread)
- ✅ Insulation defects causing mould-supportive cold spots
- ✅ Pre-purchase building surveys for hidden water damage
- ✅ Insurance trace-and-access claims (covered by most policies up to £5,10k)
How we deliver
No surprises, no upselling. The exact path every job follows.
-
1Site stabilisation
Property climate is stabilised, heating set, doors closed, to make sure of stable thermal contrast before imaging. -
2Visual inspection & moisture meter readings
Surface moisture mapped with capacitance and pin-meters to confirm wet zones. -
3Initial broad-scan with FLIR camera
Full property thermal scan to identify anomalies. -
4Detailed sectional imaging
High-resolution images of suspect areas. Temperature profiles overlaid. -
5Cross-verification with acoustic/tracer gas
Where thermal isn't conclusive, we verify with secondary methods. -
6Insurance-grade written report
All images, locations marked, root cause and remediation recommendations.
Your questions answered
How accurate is thermal imaging for finding water leaks?
Will thermal imaging see through walls?
How much does thermal imaging cost in London?
Can thermal imaging find a leak in a flat above mine?
Is thermal imaging covered by my home insurance?
Need a 24/7 emergency engineer?
30 to 60 minute response across every London borough. Gas Safe registered. 12-month workmanship guarantee.
FAQ
Thermal imaging surveys: your questions
How fast can you reach me for thermal imaging surveys?
What does thermal imaging surveys typically cost?
Is the work guaranteed?
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Need thermal imaging surveys now?
30 to 60 minute response across every London borough. Gas Safe registered. 12-month workmanship guarantee.
