Panel-Type Underlay Materials and Thickness

(1)  Panel-type underlay shall be not less than 6 mm thick and shall conform to,

    (a)   ANSI A208.1, “Particleboard”,

    (b)   CAN/CGSB-11.3-M, “Hardboard”,

    (c)   ANSI/HPVA HP-1, “Hardwood and Decorative Plywood”,

    (d)   CSA O121, “Douglas Fir Plywood”,

    (e)   CSA O151, “Canadian Softwood Plywood”,

    (f)   CSA O153, “Poplar Plywood”, or

    (g)   CSA O437.0, “OSB and Waferboard”.

Article Ontario Regulation 332/12 Building Code, Information published by for educational purposes only