A leak under a concrete floor is one of the most damaging and disruptive plumbing issues a homeowner can face. Because heating pipes, mains water supplies and bathroom plumbing often run beneath layers of screed, concrete, tiles, stone, laminate, engineered wood and LVT, leaks can continue silently for long periods before clear signs appear. Homes across Leatherhead — including Fetcham, Ashtead Borders, Leatherhead Town Centre, North Leatherhead, Givons Grove and the wider Mole Valley area — frequently contain concealed pipework beneath solid floors, making specialist detection essential.
At The Leak Hunter, we provide professional concrete floor leak detection Leatherhead, using advanced non-invasive technology to locate leaks with precision and minimal disruption.
For wider specialist services across the county, see our main Concrete Floor Leak Detection Surrey page, and for broader leak detection support in Leatherhead, visit our Leak Detection Leatherhead page.
Why Choose The Leak Hunter for Leak Detection Leatherhead?
- Specialist non-invasive leak detection equipment
- Fixed price investigation options available
- Gas Safe registered engineers
- WaterSafe approved company
- Clear diagnosis before any repair work begins
- 12-month warranty on completed repairs
Our approach focuses on accurate fault diagnosis first, ensuring leaks are precisely located before any repair work begins, helping to minimise disruption and prevent unnecessary damage.
For a full breakdown of how our leak detection investigations are structured and priced, view our Leak Detection Pricing Page.
Why Concrete Floor Leaks Are a Serious Problem
A concealed slab leak can lead to serious and costly damage, such as:
- Warm or damp patches on floors
- Losing tiles, lifted or hollow-sounding flooring
- Musty odours or visible mould
- High water bills or unexplained meter movement
- Constant boiler pressure loss
- Warped or damaged laminate, LVT or wooden floors
- Cracked plaster, screed or skirting boards
- Water spreading into adjoining rooms
- Subfloor or structural weakening
Leatherhead’s diverse mix of older homes, modern estates, converted buildings and extended properties makes slab leaks a common issue.
Common Causes of Concrete Floor Leaks in Leatherhead
We frequently uncover leaks caused by:
- Burst or corroded mains water pipes
- Leaking central heating flow/return pipes
- Underfloor heating (wet system) failures
- Copper corrosion caused by direct concrete contact
- Bathroom plumbing leaks beneath tiled floors
- Failed pan connectors or waste pipes
- Poor-quality workmanship in past refurbishments
- Clay soil movement common across Mole Valley
- Pipe vibration, friction or expansion damage
Because these leaks sit beneath dense flooring layers, advanced diagnostics are required.
How We Detect Leaks Beneath Concrete Floors
We use a range of specialist non-destructive tools, including:
Thermal Imaging
Highlights heat differences from leaks or faulty underfloor heating systems.
Acoustic Leak Detection
Ground microphones detect water escape beneath screed and concrete.
Tracer Gas Testing
A safe, odourless gas pinpoints leaks with exceptional accuracy.
Moisture Mapping
Shows damp pathways beneath concrete slabs and into surrounding walls.
Pipe Isolation Testing
Identifies whether the leak originates from the heating system, mains or bathroom plumbing.
Borescope Inspection
Allows detailed visual checks beneath floors via tiny access holes.
These technologies enable us to locate slab leaks before lifting flooring, preventing unnecessary damage.
Concrete Floor Leak Repairs Leatherhead
Once we identify the leak, we provide:
- Minimal, targeted access excavation
- Repairs to copper, plastic, multilayer and PEX pipes
- Repairs to underfloor heating loops
- Bathroom waste and supply pipe repairs
- Full reinstatement of screed, concrete and flooring
- Trace & access reports (available for insurance if required)
If the heating system performance has dropped because of the leak, a power flush may help restore efficiency.
Accreditations
⭐ Gas Safe Registered — Natural Gas & LPG
Fully certified to work safely on heating systems beneath concrete floors.
⭐ WaterSafe Approved
Committed to water safety and compliant plumbing practices.
Hidden Leaks Under Concrete Floors in Leatherhead Homes
We commonly detect leaks beneath:
- Kitchens and open-plan rooms
- Bathrooms, wet rooms and en-suites
- Hallways and ground-floor corridors
- Downstairs extensions and converted rooms
- Underfloor heating zones
- Tile, stone, laminate, LVT and engineered flooring
Leatherhead’s varied property layouts often include long, complex pipe routes beneath concrete.
Bathroom Leaks Beneath Tiled Floors
Bathroom plumbing frequently causes slab leaks, including:
- Shower waste pipe failures
- Toilet feed or pan connector leaks
- Bath waste or supply pipe issues
- Failed tanking or waterproofing
- Moisture penetrating cracked or loose tiles
- Underfloor heating pipe damage
We identify the exact fault before removing any tiles.
Ceiling Leaks Caused by Slab Failures
If water moves downward, the lower floor may show:
- Ceiling staining (yellow/brown marks)
- Bubbling or peeling paint
- Sagging or bulging plasterboard
- Musty or mouldy odours
- Dripping or intermittent moisture
We trace the true origin of the leak rather than the visible symptom.
Signs You Need Concrete Floor Leak Detection Leatherhead
Look out for:
- Warm or damp areas on the floor
- Loose or hollow-sounding tiles
- Rising water bills
- Boiler pressure dropping repeatedly
- Musty odours or visible mould
- Cracked flooring, plaster or skirting boards
- Water meter movement when taps are off
- Warped laminate or LVT floors
These symptoms strongly indicate a concealed slab leak.
Areas We Cover in Leatherhead
We provide concrete floor leak detection across Leatherhead, including:
Local Areas:
Fetcham, North Leatherhead, Givons Grove, Kingston Road Area
Nearby Places:
Ashtead, Bookham, Great Bookham, Epsom
Related Services
- Water Leak Detection
- Central Heating Leak Detection
- Underground Leak Detection
- Power Flushing
- Mould & Damp Investigation
Book Concrete Floor Leak Detection Leatherhead
If you suspect a leak under a concrete floor in your Leatherhead property, contact The Leak Hunter today. We will locate the leak accurately and provide the most effective solution.
⭐ Concrete Floor Leak Detection Leatherhead – FAQs
What are the signs of a leak under a concrete floor?
Warm patches, hollow tiles, mould, cracked flooring, water bill increases and boiler pressure loss.
Do leaks require removing the flooring to find them?
Not usually — thermal imaging, tracer gas and acoustic detection allow accurate tracing before excavation.
Can slab leaks damage the structure of a home?
Yes — prolonged moisture can weaken screed, flooring and even the concrete slab.
Do you detect leaks beneath all floor types?
Yes — including tiles, stone, laminate, LVT, vinyl and engineered wood.
Are you Gas Safe registered?
Yes — fully certified for natural gas and LPG systems.