The problem
Water ingress and leaks require traceable causation — roof, building envelope, plumbing, ground water or construction defect. The source is often concealed behind finishes and difficult to identify without instrument-led investigation.
Water follows the path of least resistance, which is rarely a straight line. Ingress may originate at the roof but manifest at ground-floor level. Leaks from plumbing may mimic penetrating damp. Without systematic, instrument-verified tracing, the true source remains hidden — and repeat failures are inevitable. Building defect investigation must be independent and data-led to have credibility in disputes.
The risk
Unclear causation prolongs insurance disputes and developer liability claims. Evidence must support the source, pathway, extent of damage and appropriate remedial scope. Without forensic-grade evidence, claims are rejected and litigation costs escalate.
Water damage claims are among the most contested in building insurance. Insurers routinely challenge causation, and developers dispute liability where evidence is weak. A forensic water ingress investigation from IBSF traces the source to its origin with thermal imaging, moisture mapping and systematic elimination.
Our investigation
We combine FLIR thermal imaging, Protimeter moisture mapping and systematic building envelope inspection to trace water ingress from source to manifestation. All data is logged, repeatable and photographically documented.
- Building envelope inspection — systematic assessment of roof, walls, windows, doors and below-ground details
- FLIR thermal imaging to identify moisture paths concealed behind plaster, renders and finishes
- Protimeter moisture mapping across all affected zones
- Plumbing and service integrity assessment where relevant
- Rainwater goods and drainage inspection
- Data logging where intermittent or weather-dependent ingress is suspected
- Photographic and thermal evidence documentation
Findings
Source, pathway and extent of water ingress are documented with instrument-verified data. Causation is isolated with clear reasoning. Reports distinguish between envelope failure, construction defects, plumbing leaks and ground-water ingress.
What the report delivers
- ✓ Source and pathway analysis with data evidence
- ✓ Moisture maps showing extent and distribution
- ✓ Thermal images with annotation and interpretation
- ✓ Photographic record of defects and damage
- ✓ Causation conclusion
- ✓ Remedial scope guidance
- ✓ Suitable for insurance claims, developer disputes and litigation
Who commissions this investigation?
Homeowners
Experiencing recurring leaks or water damage and needing an independent diagnosis of the source.
Insurers
Requiring independent causation analysis for water damage claims — distinguishing insured events from maintenance failure.
Property developers
Facing warranty or defect liability claims related to water ingress in new or recently completed buildings.
Managing agents
Investigating water ingress in multi-occupancy buildings where responsibility is disputed between leaseholders, freeholders and developers.
Solicitors
Building evidence for water damage litigation, professional negligence or building defect claims.
Frequently asked questions
- Can you trace a leak without destructive investigation?
- In most cases, yes. Thermal imaging and moisture mapping can trace moisture paths behind plaster, renders and finishes without opening up. Where concealed investigation is necessary, we advise on the minimum intervention required.
- How do you distinguish between a leak and condensation?
- Leak moisture is typically localised and follows gravity or pressure paths. Condensation is distributed across cold surfaces and correlates with environmental conditions. We use hygrothermal data logging, moisture mapping and thermal imaging to distinguish the two.
- Can your report be used for an insurance claim?
- Yes. Our reports are structured for insurers, solicitors and the courts. They include clear causation analysis, instrument-verified data and photographic evidence.
Where we work
Water ingress investigation London. Leak investigation Southampton. Water damage survey Winchester. Building defect investigation Hampshire. Roof leak investigation London. Leak detection survey near me.
Related investigations
Commission this investigation
Request an initial case review. We respond to serious enquiries promptly.
NAP: Independent Building Science and Forensics, 15 Rockstone Pl, Southampton SO15 2EP. Tel: +44 7555 809800. Email: enquiries@independentbuildingforensics.co.uk.