Construction Performance Guidelines
WATER LEAKAGE AT DOORS AND WINDOWS OR AT THE TOP OF THE FOUNDATION
Openings in exterior walls such as windows and doors, and junctions between cladding materials, shall not allow water penetration.
One-Year - Ontario Building Code Violations. Two-Year - Building Envelope Water Penetration. · Water penetration due to improper maintenance is excluded from the statutory warranty.
Defects resulting in water penetration around windows, doors, and over the top of the foundation shall be repaired.
Flashings must be installed above exterior wall openings and at the top of the foundation (masonry veneer) to direct water to the exterior. Perforations in flashing due to physical damage or chemical incompatibility, deterioration, improper termination and lack of weep holes in masonry veneer can allow water to drain to the interior. See Also: 1.13 FOUNDATION WALL LEAKS Appendix A5 “How to Conduct a Water Test”