Clapham Junction Leak Detection, Damp & Mould Specialists

Finding hidden leaks in Clapham Junction without damage

A hidden leak announces itself indirectly: a stain that reappears after redecorating, a musty smell, a combi boiler that needs topping up every week, a water meter that turns when every tap is off. The old approach was to start opening things up and hope. We work the other way round.

Thermal imaging shows the temperature change a leak causes under a floor or behind a wall; acoustic listening picks up pressurised water escaping; tracer gas introduced into a drained pipe is detected at the surface above the leak; calibrated moisture mapping separates the active leak from old damp. We open up one exact spot, not several guesses.

Working with loss adjusters and managing agents

Escape-of-water claims in Wandsworth move more smoothly when the adjuster receives a clear, independent account of the cause. We photograph before, during and after, record the readings, and set out the cause and the extent of damage in plain English.

For managing agents dealing with a leak between flats, the same report establishes responsibility and supports the claim on the right policy. Written workmanship terms apply to any repair our team carries out afterwards.

Damp surveys for buyers and owners in Clapham Junction

A mortgage valuation that flags “high moisture readings” or a surveyor’s recommendation for a specialist damp report is where many Clapham Junction enquiries start. The reading on a pin meter at a single point tells you very little on its own; the pattern of readings and the construction behind them tell the story.

Our team maps the moisture, identifies the source and writes a report that a buyer, seller or lender can act on, including what work is actually needed and what is not. If repairs follow, we quote them separately and can carry them out or manage them.

Where mould grows in Clapham Junction properties, and why

Mould needs a surface that stays damp. In practice that means the coldest corner of an external wall, the reveal beside a single-glazed or badly fitted window, the back of a built-in cupboard on an outside wall, the ceiling under a flat roof or a bathroom above, and the bottom metre of a wall that is taking in water from outside.

Each location points to a different cause, which is why our engineers map where the growth is before deciding what it is. The report pairs each patch with its moisture source and the action that removes it, and any treatment our team carries out is done after the source has been dealt with, not instead of it.

Wet rot and dry rot in Clapham Junction buildings

Timber decay follows moisture. Wet rot is the common one: soft, darkened joist ends, window sills and floorboards where a leak or persistent damp has kept the wood wet. Dry rot is rarer and more serious: it spreads through masonry behind plaster and needs a specific moisture source, usually a long-standing leak, blocked ventilation or damp in a cellar or sub-floor.

We identify the fungus, trace the moisture feeding it and establish how far it has travelled, then report on what must be removed, what can be treated and what must change so it does not return. Dry rot enquiries nearly always begin with an unnoticed leak or damp problem, and the first step is finding the water.

Your written report

Expect a document you can forward: dated photographs, calibrated readings, thermal images where they were used, the identified cause and a list of recommended works. Any remedial work is quoted on its own and carried out or managed by our team if you choose.