The Ontario Building Code | Cladding

3.1.4.8. Cladding

(1) Except as permitted by Sentence 3.2.3.7.(6), cladding for a buildingwithin the scope of Article 3.2.2.43A. or 3.2.2.50A. that exceeds 4 storeys in building height or cladding for a fire compartment in such a building shall be noncombustible.