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Leak Detection Bank
Hidden water leaks in Bank pinpointed without opening floors or walls — acoustic, thermal imaging and tracer gas detection with no find, no fee, from engineers who know Bank buildings.
Local knowledge
Bank housing, from a leak engineer's side
Bank sits at the historic core of the City, a dense mix of Victorian and Edwardian commercial buildings, mid-century office blocks and newer towers, with growing numbers of upper floors and older buildings converted to serviced apartments and residential flats above ground-floor retail and banking halls. Pipework here is a patchwork of original commercial runs, retrofit heating and cold water for the new dwellings, and communal risers shared between mixed uses. Leaks hide behind heavy period masonry, suspended ceilings and boxed conversion pipework, and water frequently tracks across a floor plate or down a riser before appearing far from where the pipe actually failed.
Engineer's note
Around Bank the mix of period fabric, deep converted floor plates and shared risers means the drip is usually well away from the fault. We moisture map and thermally survey the plate, use tracer gas on isolated conversion pipework and correlate along risers to pin the source. We book access around banking-hall and retail hours, work with managing agents and building managers, and issue an insurer-ready trace and access report.
Covered in Bank
- Hidden leaks under floors and in walls
- Underground supply pipe leaks
- Central heating and boiler pressure loss
- Underfloor heating loop leaks
- Flat-to-flat leak origin investigations
- Trace & access reports for insurance claims
What fails here
Common leak problems in Bank
01
Leaks travelling across deep floor plates
Bank's large commercial floor plates, now part-converted to flats and serviced apartments, let water run a long way across screed and slab before it finds a route down. A failure in a kitchen or plant area can surface in a room or unit on the far side of the plate. We survey the whole plate with moisture meters and thermal imaging to establish the wet gradient, then trace it back to a defined source instead of opening ceilings under the visible stain.
02
Mixed-age pipework in converted floors
Upper floors reworked from offices to residential combine original commercial pipework with newer retrofit plumbing. The joints between old and new, redundant capped branches and mismatched materials are common failure points, all boxed behind fresh finishes. Tracer gas introduced into the isolated system escapes at the fault and is detected at the surface, letting us mark the exact failed fitting behind the plasterboard rather than stripping the entire run.
03
Retail below flooding from flats above
Ground-floor shops, cafes and banking halls sit directly beneath converted residential floors. A leak upstairs surfaces first in the retail ceiling, often through downlights or over stock, and the tenant assumes the fault is directly above. Water rarely is. We map the source floor from below and above, coordinate quiet access to the residential units and confirm the true origin so the repair is targeted and the retailer's disruption is kept short.
04
Communal riser losses in mixed-use blocks
Blocks combining retail, offices and flats share heating and water risers running the full height of the building. A pinhole or weeping joint in the shaft feeds down and emerges on a lower floor with no obvious owner, while system pressure drifts down. We isolate each leg, pressure-test the loop and correlate acoustically along the riser to fix the leaking level, which resolves the liability question between the different occupiers.
Three methods, one marked point
Acoustic survey
Ground microphones and correlators follow the sound of escaping water through floors and ground.
Thermal imaging
Infrared cameras reveal wet patches and buried heating runs through the floor surface.
Tracer gas
A safe hydrogen mix escapes through the exact failure point and rises to our surface detector.
Leak detection in Bank — FAQs
How quickly can you attend a leak in Bank?
Same-day appointments are usually available in Bank and across City of London, and next-day almost always. If water is actively escaping, say so when you book — live leaks are prioritised and we can talk you through isolating the supply while the engineer travels.
What does leak detection cost in Bank?
A fixed fee agreed at booking — typically £250–£450 for a domestic detection visit — covered by no find, no fee. That includes pressure testing per circuit, thermal imaging, acoustic survey and moisture mapping. Repairs are quoted separately before any work starts.
Do you know Bank properties?
Yes — Bank sits at the historic core of the City, a dense mix of Victorian and Edwardian commercial buildings, mid-century office blocks and newer towers, with growing numbers of upper floors and older buildings converted to serviced apartments and residential flats above ground-floor retail and banking halls. Pipework here is a patchwork of original commercial runs, retrofit heating and cold water for the new dwellings, and communal risers shared between mixed uses. Leaks hide behind heavy period masonry, suspended ceilings and boxed conversion pipework, and water frequently tracks across a floor plate or down a riser before appearing far from where the pipe actually failed.
Can you provide a report for my insurer?
Every Bank detection visit can produce an insurer-ready trace and access report — cause, precise origin, methods used, moisture map and photos — typically within 48 hours.
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Read before you book
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ReadWhere we work
Bank & City of London
Map data © OpenStreetMap contributors.
Losing water in Bank?
Tell us the symptoms and your postcode. Fixed detection fee, agreed arrival window, no find no fee — confirmed before you book.
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