Leak and Damp Detection for Homes and Buildings

Leaks and damp problems are often difficult to trace. Symptoms such as staining, mould, peeling paint or unexplained moisture can appear far from the original source.
Treating visible damage without understanding the cause often leads to repeat issues. Our role is to locate where moisture is coming from and why it is occurring, before any repair or remedial work is carried out.
Fixro provides a structured, investigative approach to leak and damp detection, focused on diagnosis rather than assumptions.

Common Signs of Leaks and Damp

Leak and damp issues can manifest differently depending on the property and the source.

Common signs include:

  • Damp patches on walls, ceilings or floors.
  • Peeling paint or bubbling plaster.
  • Mould growth.
  • Musty smells accompanying mould growth.
  • Staining around skirting boards or window reveals.
  • Unexplained increases in water usage.
  • Persistent moisture despite ventilation.

These signs do not always indicate the cause, which is why proper investigation is essential.

Common Signs of Leaks and Damp

Types of Leak and Damp Issues We Investigate

Types of Leak and Damp Issues : Plumbing and Pipework Leaks

Plumbing and Pipework Leaks

Leaks can originate from visible or concealed pipework, including supply pipes, waste pipes or heating systems. These are often hidden behind walls, floors or ceilings and may only show symptoms some distance away from the source.

Types of Leak and Damp Issues : Damp Related to Building Fabric

Damp Related to Building Fabric

Not all damp issues are plumbing-related. Moisture can enter through external walls, roofs, windows or poorly sealed joints. Distinguishing between internal leaks and external moisture ingress is a key part of the investigation.

Types of Leak and Damp Issues : Condensation and Ventilation Issues

Condensation and Ventilation Issues

In some cases, damp is caused by condensation rather than a leak. This is often linked to ventilation, insulation or heating patterns and requires a different approach to repair.

Detection Tools and Investigation Process

Accurate leak and damp detection relies on a combination of experience and the right diagnostic tools.
We use modern equipment such as thermal imaging cameras and moisture meters as part of a wider investigation process. Typically, the wider area is first surveyed using thermal imaging to identify temperature or moisture anomalies that may indicate hidden leaks or damp paths. Moisture meters are then used to narrow this down and confirm the exact location and severity of the issue.
These tools are used alongside visual inspection and practical assessment of the building, allowing us to form a clear picture of what is happening and why. They can also help to keep disruption to a minimum.

Real-World Experience and Common Misdiagnoses

In practice, many leak and damp issues are misdiagnosed before a proper investigation takes place. We often attend properties where surface repairs such as repainting, replastering or resealing have already been carried out, only for the problem to return.
Common examples include damp patches assumed to be caused by plumbing leaks when the issue is actually related to external walls or failed seals. Or moisture blamed on condensation when a concealed pipe is leaking behind walls or floors.
Because we work across a wide range of properties, we are familiar with these patterns and can often identify the likely cause quickly once the affected area is properly assessed.
Our focus is on understanding how moisture is behaving within the building and why the issue has appeared, rather than just applying temporary fixes.

Common Causes We Encounter

In many cases once the cause of leaks or damp has been identified, it is shown to be a small source with a big effect but can be rectified rather than patched over.
We regularly find issues such as worn silicone seals, cracked grout between tiles, small pipe leaks hidden behind walls or floors, or failed seals around windows and external walls. In some properties, gaps in external joints or degraded waterproofing allow moisture to penetrate over time.
Accurate detection allows the correct repair to be carried out, avoiding unnecessary work and repeat problems.

Bathroom Leak Detection

Bathrooms are one of the most common areas where leaks and damp issues occur, particularly in older properties where waterproofing has deteriorated over time.
We frequently investigate bathroom-related leaks caused by worn silicone seals around baths and shower trays, cracked or missing grout between tiles, failed waterproofing behind walls, or leaking pipework concealed beneath floors or behind tiled surfaces. Water can often travel some distance before becoming visible, which makes bathroom leaks especially difficult to trace without proper investigation.
By combining thermal imaging, moisture testing and practical inspection, we assess both the bathroom itself and the surrounding areas to pinpoint the true source of the problem. This allows targeted repairs to be carried out, rather than relying on temporary resealing that may not address the underlying issue.

What’s Included in a Fixro Leak and Damp Detection Service

What’s Included in a Fixro Leak and Damp Detection Service

Fixro provides a dedicated detection service, separate from repair work.

  • Initial assessment of symptoms and affected areas.
  • Targeted investigation using appropriate detection methods.
  • Identification of the likely source of the issue.
  • Clear explanation of findings.
  • Guidance on suitable remedial actions.
  • Written summary where required.

This approach ensures any follow-up repairs are proportionate and effective.

How We Carry Out Leak and Damp Detection

Our process is designed to be methodical and transparent.

Initial Enquiry

We discuss the symptoms, the history of the issue and any previous works or remedial attempts.

On-Site Investigation

Affected areas are inspected and tested as required.

Findings and Explanation

We explain what has been identified and why.

Next Steps

Timelines are agreed and works are scheduled in the correct order.

Leak and Damp Detection Costs and Quoting

Detection costs depend on:

  • Size of the property
  • Nature and extent of the symptoms
  • Complexity of the investigation
  • Access to affected areas

Following an initial assessment, we provide a clear quote for the detection work.

Costs and Quoting Process

Why Homeowners Choose Fixro for Leak and Damp Detection

Experienced Specialists

We regularly investigate leak and damp issues across a wide range of London properties.

Evidence-Led Approach

Findings are based on investigation rather than guesswork.

Clear Communication

Results are explained in plain language.

Honest Advice

If an issue falls outside the scope of detection, we will say so.

Leak and Damp Detection Across London

Fixro provides leak and damp detection services across Greater London, working in houses, flats and commercial properties. We understand the building types and construction methods commonly found across the city.
Projects in Hertfordshire are also supported.

Client Feedback and Recent Projects

Our work is built on attention to detail, clear communication and reliable leak and damp detection.

Leak and Damp Detection FAQs

Find answers to common questions about our services, leak and damp detection.

No. Detection focuses on identifying the source of the problem. Repairs are a separate issue which can be discussed and carried out once the cause has been confirmed.

Where possible, investigations are carried out with minimal disruption. Any intrusive work is discussed in advance.

In most cases, yes. The solution depends on the cause, which is why accurate detection is important.

We provide a minimum of 12 months workmanship guarantee on detection services where applicable.

Book a Leak and Damp Detection Visit

If you are experiencing unexplained damp or suspect a hidden leak, speak to Fixro to arrange a professional leak and damp detection visit.