Construction Performance Guidelines
WINDOW UNIT LEAKS DURING RAIN
Windows, when properly closed, shall not allow water penetration under conditions for which they were designed.
One-Year - Work and Materials. Two-Year - Building Envelope Water Penetration . • Damage caused by improper maintenance or an act of God is excluded from the statutory warranty.
Defective windows that leak shall be repaired or replaced.
The homeowner must ensure operable windows are properly closed, weatherstripping and caulking is maintained and drain ports are not obstructed. The window manufacturer may provide extended warranty coverage. For window water penetration, see specifications in CAN/CSA-A440-M, “Windows”. See Appendix A5 ”How to Conduct a Water Test” for more information. See Also: 3.8 CONDENSATION FORMING BETWEEN INSULATING (FACTORY SEALED) GLASS UNIT 4.19 WATER LEAKAGE AT DOORS OR WINDOWS OR AT THE TOP OF THE FOUNDATION 8.5 CONDENSATION AND/OR FROST ON WINDOWS Appendix A5 “How to Conduct a Water Test”