The Ontario Building Code | Wall Exposed to Adjoining Roof

3.2.3.15. wall Exposed to Adjoining Roof

(1) Except as permitted by Sentence 3.2.3.19.(4), if a wall in a building is exposed to a fire hazard from an adjoining roof of a separate fire compartment that is not sprinklered in the same building, and the exposed wall contains windows within 3 storeysvertically and 5 m horizontally of the roof, the roof shall contain no skylights within 5 m of the exposed wall.