Window Leak Testing
Advanced window and fenestration leak investigation services to identify perimeter failures, flashing deficiencies, and installation errors across BC.
Window leak testing is a specialized diagnostic service focusing on fenestration assemblies including windows, sliding doors, and fixed glazing systems. Our technicians use controlled water spray testing combined with interior moisture detection to pinpoint the exact source of water intrusion in window installations.
Window leaks are among the most common building envelope failures in BC's wet climate. Improper installation, inadequate flashing, perimeter seal degradation, and missing sill pans are frequent causes of water infiltration that can lead to structural framing damage, insulation saturation, and interior mold growth. Early detection through professional window leak testing prevents escalating repair costs and building deterioration.
Our Testing Process
Window Assembly Inspection
Comprehensive visual assessment of window installation details, flashing integration, perimeter seals, and potential failure indicators.
Controlled Spray Testing
ASTM-compliant water application targeting window perimeters, sill conditions, head details, and jamb interfaces using calibrated spray equipment.
Interior Leak Detection
Real-time monitoring during testing to observe active leakage, identify water entry points, and document failure mechanisms.
Diagnostic Report & Repair Guidance
Detailed engineering report with findings, root cause analysis, photographic documentation, and specific repair recommendations for contractors.
Common Applications
Perimeter Seal Failure
Testing window frame-to-wall interface conditions where sealant deterioration or improper installation allows water penetration.
Flashing System Deficiencies
Identifying missing, damaged, or improperly integrated flashing components at window head, sill, and jamb locations.
Sill Pan & Drainage Issues
Assessing sill pan installation, drainage path obstructions, and water management at the base of window assemblies.
Glazing & Gasket Leaks
Evaluating glazing seal integrity, gasket condition, and weatherstrip performance in operating window components.
Why Choose EnvelopeTesting.ca?
25+ years of window and fenestration diagnostics experience
ASTM E1105 compliant testing methodology
Work with window manufacturers, architects, and contractors
Insurance-grade documentation for warranty claims
Thermal imaging to detect concealed moisture damage
Schedule Your Building Envelope Assessment
Professional building envelope diagnostics across British Columbia.