Penetration & Flashing Audit

Most roof leaks come from penetrations and flashings, not the field of the membrane. A targeted penetration and flashing audit reviews every drain, pipe, conduit, equipment curb, expansion joint and edge flashing condition, identifying deteriorating sealants, lifted edges, failed terminations and other common failure modes. We deliver these on commercial and institutional roofs as part of preventive maintenance programs or after a leak event.

Who this service is for

• Commercial
• Government
• Residential

Why Thermal Drone Leak Detection for penetration & flashing audit

Thermal Drone Leak Detection is a sub-division of Leak.ca, the Greater Vancouver leak detection company trusted since 1999. Every site visit is delivered by certified technicians using calibrated equipment, with documented findings formatted for insurance, engineering and procurement use.

We don't sell remediation. Our role is independent detection and assessment — the data you and your professional team work from.

Pairs well with

Clients booking penetration & flashing audit often combine it with Infrared Roof Survey or Electronic Leak Detection (ELD) — particularly when the underlying issue spans multiple systems or when documentation needs to support a broader investigation.

How to prepare for your visit

1. Document what you're seeing. Photos, dates, sounds, water-bill changes, anything unusual. The more we know in advance, the faster we can locate.
2. Clear access to the suspected area. Move furniture, stored items, and rugs. Non-invasive methods still need clear sightlines.
3. Have system history ready. Recent plumbing work, prior leaks, renovations, age of property, prior insurance claims.
4. Confirm the email for your report. Photo-linked report delivered within 48 hours (often same-day for residential).