Construction Performance Guidelines
Article Number
Condition
WINDOW UNIT LEAKS DURING RAIN
Acceptable Performance/Condition
Windows, when properly closed, shall not allow water penetration under conditions for which they were designed.
Warranty
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.
Action
Defective windows that leak shall be repaired or replaced.
Remarks
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”