Flood Testing of Waterproofing Assemblies
Controlled flooding of isolated deck, balcony, and roof sections to identify membrane breach locations under realistic water exposure conditions.
How Flood Testing of Waterproofing Assemblies Works
Flood testing is the most reliable method for locating breaches in waterproofing membranes on decks, balconies, and flat roofs. The suspect area is isolated using temporary dams or drain plugs and filled with water to a depth of 25-50 mm (1-2 inches). The water is allowed to stand for a minimum of 24 hours — though 48-72 hours is preferred for positive results. During the test period, the interior space below (or adjacent structure) is monitored for water entry. The appearance of water confirms a membrane breach, and the location of the breach is identified by observing water entry patterns, sometimes in combination with dye testing. Flood testing is the definitive method for waterproofing warranty claims and is often the only method accepted by condominium insurers.
Applications in BC
- Balcony waterproofing membrane leak detection for BC strata
- Podium deck and plaza level waterproofing verification
- Green roof membrane integrity testing
- Shower pan and bathroom waterproofing testing
- Flat roof drainage and membrane assessment
Advantages
- Most realistic simulation of actual rain exposure
- Definitive results for warranty and insurance claims
- Identifies even small membrane breaches
- Can test large areas in single setup
- Standard test accepted by all insurers
Limitations
- Labour-intensive setup and monitoring
- Requires access to both sides of assembly
- 24-72 hour test period
- Potential for water damage if test fails substantially
Equipment Used
- • Plumbing test plugs and drain stoppers
- • Sandbags and temporary dams
- • Water delivery hose and flow meter
- • Plastic sheeting for water containment
- • Food-grade fluorescent testing dye
Related Services
Professional Flood Testing of Waterproofing Assemblies in BC
LeakInspections.ca — a division of Anyleak.ca and Leak.ca. Call 604-239-9934.