
IGM Leak Detection Specialists
Non-Destructive Investigation Using Advanced Detection Equipment.
We find hidden leaks without unnecessary damage.
Professional Service from £480 + VAT
Signs You May Have a Hidden Leak
Water leaks often go unnoticed until damage is visible. If you notice any of these signs, you may have a hidden leak that requires professional detection.
How We Find Leaks Without Damage
We use industry-leading non-destructive technology to pinpoint the exact location of your leak.
What You Get with IGM
We don't just find the leak; we provide a complete solution to get your home back to normal.
Accurate Leak Location
We pinpoint the exact source of the leak, minimizing the need for invasive exploration.
Clear Explanation
Our engineers will explain exactly what the problem is and recommended next steps.
Minimal Disruption
Non-destructive methods mean we don't tear up your floors unless absolutely necessary.
Insurance-Ready Report (Optional)
A comprehensive written report with photos for your insurance claim. (Additional cost applies)
Most home insurance policies cover "Trace & Access" costs. Check your policy!

Simple, Upfront Costs
Clear pricing for peace of mind. No hidden fees.
Call out charge
- Includes first 3 hours of labour
- Standard leak detection procedures
- Additional hours: £160 + VAT
- Identification of water leak within property
- Up to 10 metres from external water source
- Includes standard procedures & specialist equipment
- Repairs and reinstatement not included
Call out charge
- Emergency attendance
- Includes first 3 hours of labour
- Additional hours: £260 + VAT
Additional Charges & Info
Tracer Gas £48 + VAT
Per additional half bottle.
Charge is for supply/use only (not labour). If required to assist location, gas cost is added to the fixed/standard price.
External Mains (>10m)
Leak detection involving external supply runs exceeding 10 metres from the water source will be charged at our hourly rates.
Bank Holidays £1497 + VAT
Call out rate.
After 3rd hour: £499 + VAT per hour.
Christmas Day £2100 + VAT
Call out rate.
After 3rd hour: £700 + VAT per hour.
Note: A Leak Detection Report incurs an additional charge of £130 + VAT per hour for report preparation.
Local Breakdown &
Leak Detection
Based in Harpenden, we serve the entire Hertfordshire area with rapid response times.
What Our Clients Say
5.0/5 Average Rating based on verified reviews
Shirley leeming
"Ian and his team were very professional and knowledgeable and nothing was too much trouble. Found the leak and repaired in no time. Very pleased"
1 of 10 reviews
Shirley leeming
"Ian and his team were very professional and knowledgeable and nothing was too much trouble. Found the leak and repaired in no time. Very pleased"
Jack Blundell
"Great service from Ian and co. Identified and fixed our radiator leak quickly and at a fair price too. Would highly recommend."
James Bentall
"We have had had serious problems with our underfloor heating system for many years, to the point where we were about to remove it entirely and start again. Ian…"
Read full review →
Jonathan Kelly
"Called img out on New Year’s Eve at 7pm he answered and was with us in 15mins. Assessed and Sorted out the the issue quickly which was a burst pipe joint. Great…"
Read full review →
Manisha Ramchurn
"Ian and his team were excellent, both knowledgeable and professional. Ian was quickly able to diagnose a very serious problem and offer a workable solution. Ian…"
Read full review →
Stuart Ward
"Came out and found leaky pipe within the hour. Sorted. Would recommend."
Billy Minall
"I have used Ian on many occasions, very knowledgeable and professional!"
John Bennett
"I would not hesitate to recommend IGM. Ian and Billy carried out excellent work in gas leak detection, replacement boiler and gas pipes with superb, finishing.…"
Read full review →
Russ Powles
"Wow. What a difference it makes when you get an experienced tradesman with real expertise turning up to look at your plumbing issue. Ian diagnosed the issue in…"
Read full review →
Jesse Billington
"Really solid job from Ian and the team on tracking down our leak and getting it resolved with a view to a long-term solution. Tidy and professional work."
Shirley leeming
"Ian and his team were very professional and knowledgeable and nothing was too much trouble. Found the leak and repaired in no time. Very pleased"
Jack Blundell
"Great service from Ian and co. Identified and fixed our radiator leak quickly and at a fair price too. Would highly recommend."
James Bentall
"We have had had serious problems with our underfloor heating system for many years, to the point where we were about to remove it entirely and start again. Ian…"
Read full review →
Jonathan Kelly
"Called img out on New Year’s Eve at 7pm he answered and was with us in 15mins. Assessed and Sorted out the the issue quickly which was a burst pipe joint. Great…"
Read full review →
Manisha Ramchurn
"Ian and his team were excellent, both knowledgeable and professional. Ian was quickly able to diagnose a very serious problem and offer a workable solution. Ian…"
Read full review →
Stuart Ward
"Came out and found leaky pipe within the hour. Sorted. Would recommend."
Billy Minall
"I have used Ian on many occasions, very knowledgeable and professional!"
John Bennett
"I would not hesitate to recommend IGM. Ian and Billy carried out excellent work in gas leak detection, replacement boiler and gas pipes with superb, finishing.…"
Read full review →
Russ Powles
"Wow. What a difference it makes when you get an experienced tradesman with real expertise turning up to look at your plumbing issue. Ian diagnosed the issue in…"
Read full review →
Jesse Billington
"Really solid job from Ian and the team on tracking down our leak and getting it resolved with a view to a long-term solution. Tidy and professional work."
Recent Jobs
Real leak detection jobs we've completed across Harpenden & Hertfordshire.

Thermal imaging scan — hidden leak beneath shower tray

Pressure testing central heating system & hot water cylinder

IGM Plumbing and Heating utilizes advanced thermal imaging to accurately locate underfloor leaks and heating pipes without the guesswork.
Frequently Asked Questions
Everything you need to know before booking your leak detection.
Still have a question?
Call us — 07749 202609