The Ontario Building Code | Insulation Materials
9.25.2.2. insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation Materials
(1) Except as required in Sentence (2), thermal insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation shall conform to the requirements of,
(a) CAN/cgsb-51.25-M, "Thermal insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation, Phenolic, Faced",
(b) cgsb 51-GP-27M, "Thermal insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation, Polystyrene, Loose Fill",
(c) CAN/ulc-S701, "Thermal insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation, Polystyrene, Boards and pipe Covering",
(d) CAN/ulc-S702 "Mineral Fibre Thermal insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation for Buildings",
(e) CAN/ulc-S703, "Cellulose Fibre insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation (CFI) for buildings",
(f) CAN/ulc-S704, "Thermal insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation, Polyurethane and Polyisocyanurate, Boards, Faced",
(g) CAN/ulc-S705.1, "Thermal insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation – Spray Applied Rigid Polyurethane Foam, Medium Density – Material – Specification", or
(h) CAN/ulc-S706, "wood Fibre Thermal insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation for Buildings".
(2) Theflame-spread rating requirements contained in the standards listed in Sentence (1) shall not apply.
(3) insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation in contact with the ground shall be inert to the action of soil and water and be such that its insulative properties are not significantly reduced by moisture.
(4) Type 1 expanded polystyrene insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation as described in CAN/ulc-S701, "Thermal insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation, Polystyrene, Boards and pipe Covering", shall not be used as roof insulationhttp://thehandyforce.com/insulation/" title ="Toronto home insulation">insulation applied above the roofing membrane.
In Plain Language
Insulation materials must conform to the standards referenced in this article, ensuring consistent thermal performance and quality across different products.
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.