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    Construction Performance Guidelines

About the Guidelines

These helpful guidelines outline work and material deficiencies in new homes and residential condominium units covered under the statutory warranty [...]

Water Leak Through Building Envelope (Exterior Closure)

Article Number

2.16

Condition

WATER LEAK THROUGH BUILDING ENVELOPE (EXTERIOR CLOSURE)

Acceptable Performance/Condition

The building envelope/exterior closure shall be constructed to prevent water entry into the interior of the building.

Warranty

One - Year – Work and Materials. One - Year – Ontario Building Code Violations. Two -Year – Building Envelope Water Penetration. Damage resulting from normal wear and tear, improper maintenance or additions, alterations and deletions made by the homeowner is not covered by the statutory warranty.

Action

Building envelopes/exterior closures not meeting the acceptable condition shall be repaired.

Remarks

Leakage into the interior refers both to leakage into occupied spaces and also to leakage into the concealed portions of a wall system that is intended to be face-sealed. The building envelope/exterior closure includes the elements which separate the interior conditioned space from the exterior and includes cladding, windows, doors, vents, louvers, grilles etc. Roofing is covered separately. Joints and cracks in exterior wall surfaces and around openings shall be properly sealed to prevent the entry of water unless otherwise considered by the design. Repairs cannot alter the design intent of the cladding system. For example, leaks in a rain-screen system cannot be face-sealed.

  

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