9.25.2.2.Insulation Materials

(1) Except as required in Sentence (2), thermal insulation shall conform to the requirements of (a) ASTM C726, “Standard Specification for Mineral Wool Roof Insulation Board,” (b) CAN/CGSB-51.25-M, “Thermal Insulation, Phenolic, Faced,” (c) CGSB 51-GP-27M, “Thermal Insulation, Polystyrene, Loose Fill,” (d) CAN/ULC-S701.1, “Standard for Thermal Insulation, Polystyrene Boards,” (e) CAN/ULC-S702.1, “Standard for Mineral Fibre Thermal Insulation for Buildings, Part 1: Material Specification,” (f) CAN/ULC-S703, “Standard for Cellulose Fibre Insulation (CFI) for Buildings,” (g) CAN/ULC-S704.1, “Standard for Thermal Insulation, Polyurethane and Polyisocyanurate, Boards, Faced,” (h) CAN/ULC-S705.1, “Standard for Thermal Insulation - Spray Applied Rigid Polyurethane Foam, Medium Density - Material – Specification,” or (i) CAN/ULC-S706.1, “Standard for Wood Fibre Insulating Boards for Buildings.” (2) The flame-spread rating requirements contained in the standards listed in Sentence (1) shall not apply. (See Note A- 9.25.2.2.(2)) (3) 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 insulation as described in CAN/ULC-S701.1, “Standard for Thermal Insulation, Polystyrene Boards,” shall not be used as roof insulation applied above the roofing membrane.