The Ontario Building Code | Structural Loads, Air Leakage and Water Penetration
5.10.2.3. Structural Loads, Air Leakage and water Penetration
(1) windows, doors, skylights and their components shall be designed and constructed in accordance with,
(a) Article 5.10.2.2., where they are covered in the scope of the standards listed in Sentence 5.10.2.2.(1), or
(b) Article 5.1.4.1. and Sections 5.4. and 5.6., in other cases.