The Ontario Building Code | Combustible Flooring Elements
3.1.5.8. Combustible flooring="http://thehandyforce.com/flooring/" title ="Handyman flooring install Toronto">flooring Elements
(1) Combustible stage flooring="http://thehandyforce.com/flooring/" title ="Handyman flooring install Toronto">flooring supported on noncombustiblestructural members is permitted in a buildingrequired to be of noncombustible construction.
(2) wood members more than 50 mm but not more than 375 mm high applied directly to or set into a noncombustible floor slab are permitted for the construction of a raised platform in a building required to be of noncombustible construction provided the concealed spaces created are divided into compartments by fire blocks in conformance with Sentence 3.1.11.3.(2).
(3) The floor system for the raised platform referred to in Sentence (2) is permitted to include combustible subfloor and combustible finished flooring.
(4) Combustiblefinished flooring is permitted in a buildingrequired to be of noncombustible construction.
In Plain Language
Combustible stage flooring on noncombustible structural supports is allowed in noncombustible-construction buildings, and wood-framed raised platforms (50-375 mm high) built directly on a noncombustible floor slab are also allowed, provided any concealed spaces created are divided by fire blocks, and the platform's subfloor and finished flooring may also be combustible.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.