Do these signs look familiar?
- You need to top up the pressure every week
- A radiator seeps at a fitting or valve
- An unusually warm patch on the floor
- Noises from water circulating through the pipes
- The heating takes longer to warm up
What could be causing the problem?
- A damaged underfloor heating loop
- A leaking radiator fitting
- An expansion vessel reaching the end of its life
- A cracked heat exchanger
- A pressure relief valve discharging out of sight
A pressure drop does not always mean a damaged pipe.
An expansion vessel, a valve or a visible fitting may be responsible. We examine these possibilities before concluding there is a leak under the floor. How often you top up the pressure and any recent work are useful details.
Check the system before concluding there is a leak under the floor
We start with how often you top up the pressure, visible marks and recent work. Accessible fittings and components that could explain the pressure loss are inspected before we identify a concealed leak as the likely cause.
On a heating circuit or underfloor heating system, pressure checks and thermal imaging can supplement the observations. The camera shows surface temperatures: it can help trace the circuit when conditions allow, but it does not directly reveal a hole in a pipe. We explain the operating conditions to prepare before the visit.
Decide on repairs based on established findings
The report sets out the checks carried out and distinguishes a visible defect from an area that still needs access. A targeted opening may be proposed if the point remains concealed. Repairs are defined and quoted separately, rather than inferred from the pressure loss alone.
Your practical questions
Does a leaking underfloor heating system mean lifting the whole floor?
Thermal imaging can help trace the circuit and identify an unusual area. Pressure and moisture readings can supplement the investigation before considering an opening.
Does the heating need to be on?
It depends on the planned check. A temperature contrast can help with thermal imaging; the technician will explain the conditions to prepare before the appointment.
Does a pressure drop prove there is a leak?
No. Boiler components may also be responsible. We check these possibilities before concluding there is a concealed leak.
How much does a heating leak investigation cost?
The system, access and any need for an opening determine the scope. See our four price guide categories ; we choose the techniques appropriate to your situation.