Water ingress is one of the most common and costly building defects affecting commercial properties, industrial facilities and complex structures.
The challenge is that the visible signs of a leak are often far removed from the source. Moisture can travel through roof build-ups, façade systems, drainage pathways, curtain walling interfaces and structural cavities before becoming apparent internally.
What may appear as a minor leak can often indicate a wider issue affecting the condition and performance of the building envelope.
We provide specialist water ingress investigations and leak detection surveys that help facilities managers, asset managers, surveyors and property owners identify the true source of defects before they escalate into costly repairs, operational disruption or long-term deterioration.
Our investigations combine advanced diagnostic testing, building envelope expertise and specialist access solutions to assess roofs, façades, curtain walling, glazing systems, atriums and difficult-to-access structures.
Rather than simply identifying where water appears, we focus on understanding why defects have occurred, how they are affecting asset condition and what actions are required to protect long-term building performance.
Every investigation is designed to support informed maintenance decisions, risk reduction and proactive asset management.
Water ingress rarely exists in isolation.
When moisture penetrates a building envelope, it can contribute to a range of wider maintenance issues, including structural deterioration, corrosion, saturated insulation, internal damage and ongoing operational disruption. If left unresolved, seemingly minor defects can develop into significant maintenance liabilities.
Common consequences of unresolved water ingress include:
Early investigation helps identify the root cause of defects before they lead to larger maintenance challenges and more costly remedial works.
Water can enter a building through multiple routes, often travelling considerable distances before becoming visible.
Our investigations assess the complete building envelope, including:
By understanding how different building systems interact, we can trace water ingress from source to symptom and ensure recommendations address the underlying cause rather than simply treating the visible effects.
Every building presents unique challenges, which is why our investigations are tailored to the construction type, access requirements and nature of the reported defect. Our approach typically combines multiple diagnostic techniques to develop a complete understanding of the problem.
Thermal imaging surveys use infrared technology to identify temperature variations that may indicate trapped moisture, saturated insulation or concealed water pathways.
Combined with moisture mapping, this allows us to:
This technique is particularly effective on roofs, façades and curtain walling systems where moisture may not be immediately visible.
For flat roofing systems, electronic leak detection (ELD) provides a highly accurate, non-destructive method of locating breaches in waterproofing membranes.
Suitable for:
Electronic leak detection enables our specialists to pinpoint membrane failures that would otherwise be difficult to identify through visual inspection alone.
Controlled water testing replicates real weather conditions to identify failures within building envelope systems.
This method is particularly effective for:
By introducing water in a controlled sequence, we can isolate specific defects and confirm ingress pathways with confidence.
Where drainage systems, flashings or complex junctions are suspected, dye testing helps trace water movement through the building fabric.
This technique is often used to investigate:
Where defects are concealed behind finishes, cladding systems or within roof voids, endoscopic surveys provide visual access without extensive disruption.
Using high-definition inspection cameras, we can investigate:
This allows us to diagnose issues accurately while minimising invasive investigation works.
In more complex cases, water analysis can help determine whether moisture originates from rainfall, internal services, HVAC systems or other sources.
This additional layer of evidence supports accurate diagnosis and helps avoid unnecessary remedial works.
Access is often one of the biggest challenges when investigating water ingress.
Building Transformation combines building envelope expertise with specialist access solutions, allowing us to inspect and test areas that are inaccessible through conventional means.
Our access capabilities include:
This enables us to investigate high-rise façades, atriums, roof structures, industrial facilities and heritage buildings safely and efficiently while minimising disruption to building occupants and operations.
Every water ingress investigation is supported by a detailed report that provides stakeholders with a clear understanding of the defect, its cause and the recommended course of action.
Reports typically include:
Our reports support maintenance planning, remedial works procurement, warranty discussions, insurance claims and long-term asset management decisions.
The objective of a leak detection survey is not simply to locate moisture.
The real value lies in understanding asset condition, identifying maintenance priorities and preventing further deterioration.
Our investigations help inform:
This investigation-led approach allows clients to move from reactive problem solving towards proactive asset protection and long-term building performance management.
See how Building Transformation used a bespoke rope access strategy to investigate and repair persistent water ingress at the Hilton London Metropole.
With the affected roof positioned above a glazed atrium and inaccessible using traditional access equipment, our team developed a specialist “up and over” rope access solution.
Our IRATA-qualified technicians safely accessed the roof, identified failed waterproofing around the roof vent, completed targeted repairs and liquid coating works, and cleared the rainwater drainage system.
The solution resolved the water ingress while minimising disruption and allowing the hotel to remain fully operational.
Building Transformation combines building envelope expertise, advanced diagnostic technology and specialist access capability to deliver detailed water ingress investigations across commercial, industrial and public sector assets.
We work with:
Our focus is to identify the true source of water ingress, provide clear evidence and help clients make confident maintenance decisions that protect the long-term condition of their assets.