Construction Performance Guidelines
FLOOR FRAMING DAMAGED BY WEATHER DURING CONSTRUCTION
The joists and subfloor shall be sound and free from damage caused by weathering and must provide a suitable base for finished flooring.
One-Year - Work and Materials. Seven-Year - Major Structural Defect
Joists and subfloors damaged by weathering to the extent that they cannot carry the anticipated loads or are made unsuitable for finished flooring shall be repaired.
Materials that can be significantly damaged by weather should be protected during storage and construction. Composite panels such as oriented strandboard and plywood used for subfloors and webs of manufactured joists require more protection than solid-sawn lumber and can swell or delaminate if saturated over lengthy periods. Discolouration alone does not necessarily indicate a warrantable condition.