Service
Leak Testing for Latent Defect Insurance (LDI)
Independent pre-handover testing and certification — the evidence latent defect insurers expect before issuing cover.
Discuss LDI testingWhat latent defect insurance providers require
Latent Defect Insurance protects building owners against hidden defects after handover. Waterproofing failures are among the most common claims. Most LDI policies require independent testing and certification before the insurer issues cover.
Why independence matters in waterproofing testing
Contractors have an incentive to declare work complete. Designers have an incentive to say the specification has been met. Independent testing cuts through that conflict and gives the insurer the defensible evidence base they need to issue cover.
What Vector's pre-handover testing delivers
Systematic electrical impedance testing across the entire waterproofing system before handover. Detects breaches, voids, moisture ingress and installation defects.
Suitable for bituminous membranes, single-ply systems, reinforced bitumen sheets, spray-applied polyurea and hybrid systems. We test flat roofs, pitched roofs, basement structures and external envelope systems.
How our reports are structured for insurers
Each report includes:
- Scope of works tested
- Testing methodology
- Location of any defects found
- Assessment of remedial need
- Statement of readiness for service
- Vector's qualifications and statement of independence
- Raw test data and photographic evidence
The timeline
Pre-handover testing is carried out 2–4 weeks before practical completion. The report is delivered within 10 working days of site work.
Next steps
- Waterproofing Design Review — catch issues earlier, at design stage
- Quality Assurance — independent inspection during installation
- Complete Roof Assurance — full-lifecycle protection
- Buried Leak Location — post-handover diagnostic
- Permanent Leak Detection — long-term monitoring
Related technical resources
Need LDI testing for a scheme approaching handover?
Talk to Vector. We work to the standard insurers expect.
Talk to Vector